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• WinXP - Having trouble sharing internet with 3G USB modem via ICS

  - by Carlos Nunez

  all! I've been banging my head against a wall with this issue for a few days now and am hoping someone can help out. I recently signed up for T-Mobile's webConnect 3G/4G service to replace the faltering (and slow) DSL connection in my apartment. The goal was to put the SIM in one of my old phones and use its built-in WLAN tethering feature to share Internet out to rest of my computers. I quickly found out that webConnect-provisioned SIMs do not work with regular smartphones, so I was forced to either buy a 4G-compatible router or tether one of my old laptops to my wireless router and share out that way. I chose the latter, and it's sharpening my inner masochistic self by the day. Here's the setup: GSM USB modem (via hub), ICS host - 10/100 Mbps Ethernet NIC, ICS "guest" - WAN port of my SMC WGBR14N wireless router in bridged mode (i.e. wireless access point). Ideally, this would make my laptop the DHCP server and internet gateway with the WAP giving everyone wireless coverage. I can browse internet on the host laptop fine. However, when clients try to connect, they get a DHCP-assigned IP from the laptop and are able to use the Internet for a few minutes before completely dying. After that happens, they are able to re-associate with the WAP and get IP addresses, but are unable to use Internet or resolve IP addresses until the laptop and router are restarted. If they do get access, it's very, very slow. After running Wireshark on the host machine, it turns out that this is because every TCP connection keeps getting RST. DNS seems to work. I would normally think the firewall is the culprit here, but when it drops packets, it drops them completely. The fact that TCP connections are being ACK'ed by the destination rules that out. Of course, none of the event Log isn't saying anything about what's going on. I also tried disabling power management on the NIC, since that's caused problems in the past; that didn't help either. I finally disabled receive-side scaling as per a Microsoft KB (that applied to Windows Server 2003, SP2) to no avail. I'm thinking of trying it with a different NIC (will be tough; don't have a spare Ethernet NIC around for the laptop), but I'm getting the impression that this simply doesn't work. Can anyone please advise? I apologise for the length of this post; all contributions are much appreciated! -Carlos.

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• Are FC and SAS DAS devices standard enough?

  - by user222182

  Before I ask my questions, here is some background info that may or may not be useful: For the first time I find myself needing a DAS solution. My priority is data through-put in a single direction. I can write large blocks, and I don't need to read at the same time. The server (the data producing device) is not really a typical server, its a very powerful single board computer. As such I have limited options when it comes to the add-in cards I can install since it must use the fairly uncommon interface, XMC. Currently I believe I am limited PCIex8 gen 1 which means that the likely bottle neck for me will be this 16gbps connection. XMC Boards I have found so far offer the following connections: a) Dual 10GBE ethernet controller, total throughput 20gbps b) Dual Quad SAS 2.0 Connectors (SFF-8XXX) HBA (no raid), total throughput 48 gbps c) Dual FC 8gb HBA (no raid), total throughput 16gbps My questions for you guys are: 1) Are SAS and/or FC, and by extension their HBAs, standard enough that I could purchase a Dell or Aberdeen storage server with a raid controller that has external SAS or FC ports and expect that I can connect it to my SAS or FC HBA, be presented with a single volume (if I so configured the storage server), all without having to check for HBA compatibility? 2) On a device like a Dell PowerVault (either DAS or NAS) is there an OS on it to concern myself with, or is it meant to be remotely managed? Is there a local interface in case I cant remotely manage it (i.e. if my single board computer uses an OS not supported by Dell OpenManage). Would this be true of nearly any device which calls itself a DAS? 3) If I purchase some sort of Supermicro storage chassis, installed a raid controller with external connections, is there a nice lightweight OS I can run just for management of the controller? Would I even need an OS since the raid card would be configured pre-boot anyway? 4) It is much easier to buy XMC based 10gigabit ethernet cards (generally dual port). In what ways would I be getting into trouble by using iSCSI as a DAS are direct cabling with SFP+ cables? Thanks in advance

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• Setting up Virtual Hosts with Apache on Windows 2008 server for multiple sites. Complicated setup,

  - by Roeland

  Hey guys! I am setting up apache on my windows 2008 server at my home. It will serve 2 functions. Subversion hosting to allow me and some others to manage company documents with version control Local website hosting for web development. Will need to run several websites since I generally work on more then one site at a time. Heres what I have done so far. I set up subversion and apache 2.2 using some walk troughs. I changed the default port to 1337. (im a nerd) Using dyndns.com I created a domain to forward to my home ip which is dynamic. ( company.gotdns.org) I then went into my DNS for my company.com and added a record to point repo.company.com to company.gotdns.org At this point people who need access to my file repository can access by going to repo.company.com/repo which is good so far. My question comes on the next step, setting up virtual hosts with apache. Ideally I would like to have my local website be viewable by some others in the company from their homes. So, say I am working on site1, I would like to have them be able to view this by going site1.roeland.bythepixel.com. At the same time, I would like to have site10.wouter.bythepixel.com go to his local setup for site10. What I have done for this: I went into my DNS for company.com and added a record to point roeland.company.com to company.gotdns.org (which translates to my ip). I added code to my httpd-vhosts.conf (listed at bottom) I added code to my host file (listed at bottom) Hah, so of course this doenst work as excepted.. going to site1.roeland.bythepixel.com doesnt bring up my test1 site. Could anyone point me where I may be going wrong? Thanks! hosts: 127.0.0.1 localhost 127.0.0.1 sensenich.roeland.bythepixel.com ::1 localhost httpd-vhosts.conf: <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot "F:/Current Projects/sensenich.com" ServerName sensenich.roeland.bythepixel.com ErrorLog "logs/sensenich.roeland.bythepixel.com-error.log" CustomLog "logs/sensenich.roeland.bythepixel.com-access.log" common </VirtualHost>

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• LDAP installed, running, but can't connect remotely [Ubuntu 10.10]

  - by Casey Jordan

  Hi all, I installed LDAP on my ubuntu 10.10 system, using the tutorial found here: https://help.ubuntu.com/10.10/serverguide/C/openldap-server.html Everything seems to be working well, when logged into the server via ssh I can run commands like: > ldapsearch -xLLL -b "dc=easydita,dc=com" uid=john sn givenName cn dn: uid=john,ou=people,dc=easydita,dc=com sn: Doe givenName: John cn: John Doe So I think that's a good sign that things are working well. However I have had zero luck connecting to the server remotely via GUI tools or command line. I have tied JXplorer, and LDAP administration tool. Running commands like this: > ldapsearch -xLLL -W -H ldap://ice.rit.edu -d1 "dc=easydita,dc=com" ldap_url_parse_ext(ldap://ice.rit.edu) ldap_create ldap_url_parse_ext(ldap://ice.rit.edu:389/??base) Enter LDAP Password: ldap_sasl_bind ldap_send_initial_request ldap_new_connection 1 1 0 ldap_int_open_connection ldap_connect_to_host: TCP ice.rit.edu:389 ldap_new_socket: 3 ldap_prepare_socket: 3 ldap_connect_to_host: Trying 127.0.0.1:389 ldap_pvt_connect: fd: 3 tm: -1 async: 0 ldap_open_defconn: successful ldap_send_server_request ber_scanf fmt ({it) ber: ber_scanf fmt ({i) ber: ber_flush2: 34 bytes to sd 3 ldap_result ld 0xb8940170 msgid 1 wait4msg ld 0xb8940170 msgid 1 (infinite timeout) wait4msg continue ld 0xb8940170 msgid 1 all 1 ** ld 0xb8940170 Connections: * host: ice.rit.edu port: 389 (default) refcnt: 2 status: Connected last used: Thu Mar 17 19:42:29 2011 ** ld 0xb8940170 Outstanding Requests: * msgid 1, origid 1, status InProgress outstanding referrals 0, parent count 0 ld 0xb8940170 request count 1 (abandoned 0) ** ld 0xb8940170 Response Queue: Empty ld 0xb8940170 response count 0 ldap_chkResponseList ld 0xb8940170 msgid 1 all 1 ldap_chkResponseList returns ld 0xb8940170 NULL ldap_int_select read1msg: ld 0xb8940170 msgid 1 all 1 ber_get_next ber_get_next: tag 0x30 len 16 contents: read1msg: ld 0xb8940170 msgid 1 message type bind ber_scanf fmt ({eAA) ber: read1msg: ld 0xb8940170 0 new referrals read1msg: mark request completed, ld 0xb8940170 msgid 1 request done: ld 0xb8940170 msgid 1 res_errno: 49, res_error: <>, res_matched: <> ldap_free_request (origid 1, msgid 1) ldap_parse_result ber_scanf fmt ({iAA) ber: ber_scanf fmt (}) ber: ldap_msgfree ldap_err2string ldap_bind: Invalid credentials (49) I am pretty sure that I set up the admin password correctly, but the tutorial was not very specific about that. (Also could not find instructions on how to reset admin password.) Additional info: I was told that this file might hold important information so I will post it: /etc/ldap/slapd.d/cn=config/olcDatabase={0}config.ldif dn: olcDatabase={0}config objectClass: olcDatabaseConfig olcDatabase: {0}config olcAccess: {0}to * by dn.exact=cn=localroot,cn=config manage by * break olcRootDN: cn=admin,cn=config structuralObjectClass: olcDatabaseConfig entryUUID: eca09490-e524-102f-87c5-17d7a82e8985 creatorsName: cn=config createTimestamp: 20110317205733Z entryCSN: 20110317205733.193089Z#000000#000#000000 modifiersName: cn=config modifyTimestamp: 20110317205733Z Given that it seems I have this almost set up correctly is there any steps I can take to correct this? Thanks, Casey

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• Can't send email through Comcast SMTP to my domains

  - by Midnight Oil

  I am a Comcast customer with 3 computers and 3 computer users in the house. There are 2 fully updated Macs and one PC running Windows 7. We use Mail on the Macs, and Outlook on Windows 7. All computer accounts are configured to send mail through port 587 of smtp.comcast.net. I also have two personal domains registered with Network Solutions. For the sake of this discussion, call my domains myOwnDomain1.com and myOwnDomain2.com. I have email addresses at both domains. They are of the form [email protected] and [email protected]. Until recently, our email worked as expected. However, sometime between September 13, 2012 and September 19, 2012, we lost the ability to send email through Comcast's SMTP server to the email addresses at my personal domains. If we attempt to send email through Comcast's SMTP to those addresses, the email never arrives. Furthermore, the email clients give no indication of failure. The email just never arrives. The result is the same on all 3 computers and with all accounts on those computers. We can successfully send email through Comcast's SMTP from any of our accounts on any of our computers to any email address other than to my email addresses at my personal domains! However, I receive email at those domains that is not sent through smtp.comcast.net. For example, I can successfully send email from my gmail and yahoo accounts to my email addresses at my personal domains. Furthermore, I can successfully send email through smtp.myOwnDomain1.com to [email protected] and through smtp.myOwnDoman2.com to [email protected]. Comcast says the problem must be at Network Solutions. According to Network Solutions, their logs show they are not blocking reception of the email, and our IP address is not flagged as a spam source. They say the email is simply not arriving. Does anyone have any ideas why we can't send email through Comcast's SMTP server to my domains? As an odd coincidence, we recently noticed a change in Comcast's SMTP service. there is now a 5 minute delay on all outbound mail. Comcast's SMTP server seems to sit on the mail with a 5 minute timer.

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• Blank displays after inactivity, mouse cursor not showing up

  - by Mike Christiansen

  I have a Windows 7 Enterprise x86 machine that is exhibiting some strange problems. After some inactivity (it varies how long it takes), when I come back to my computer, both of my monitors are black. The monitors are on, with a black display. Moving the mouse and pressing keys on the keyboard do not work. This happens at least once a day. When I first encountered the issue, I performed a hard shutdown and restarted the computer. About 10% of the time when I did this, the resolutions on my monitors were messed up. The native resolution on the primary monitor is 1600x900, and the native on my secondary is 1440x900. None of the widescreen resolutions would be present in the display properties. I had 800x600, 1024x768, and 1280x1024. As a workaround to this issue, I've found that if I plug in my secondary monitor as the primary monitor, and leave the secondary unplugged, then Windows will start in 1024x768 on the secondary. Then, I can use Windows 7's "Detect" feature and it finds the 1440x900 resolution, and sets it. Then I have to connect the primary monitor to the secondary port and set it as the primary. Then I can switch the two cables, putting the primary into the primary, the secondary into the secondary. Then use the "Detect" feature again, and it finds the correct resolutions. Some time after performing the above, I discovered that when the screens were blanked, I could simply press "Control+Alt+Delete", type in my password, and everything comes up fine - except my mouse cursor. All applications and features work as intended, except there is no mouse cursor (the mouse actually works though...). I have the "Show location of pointer when I press CTRL key" option selected, so I can press CTRL and use my mouse as normal - but I have no actual cursor. When the computer is in this state, UAC is also not functional. Whenever a UAC prompt appears, the screens go black (the original symptoms) and I have to press Escape to exit UAC. Because of the above symptoms (the UAC black screen thing, etc) I beleive winlogon.exe may be the culprit. However, I have no idea how to fix it. I am unable to restart winlogon.exe due to the problems I am having with winlogon.exe (the UAC black screen) Looking for any ideas.... More information Windows 7 x86 Enterprise Domain environment (I have a secondary account with administrator rights) Dell Optiplex 960 Cannot perform "optional" windows updates due to an activation issue (I am testing a windows 7 image, and an activation infrastructure has not been created yet. However, this issue was happening before I was unable to perform windows update, and windows was up to date at the time Updated video card driver (as an attempt to fixing the resolution issue) Disabled all power saving options Please let me know what else you need to help me solve this issue! Thanks in advance, Mike

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• sendmail on ubuntu (9.10) machine "stopped" sending mail

  - by Doron

  I'm developing on my ubuntu 9.10 machine for the web (php). I'm using it sendmail for sending mails, and while developing on my local machine, I send local mails (to my user 'doron'). Up until a few days ago, I was able to send mails both from php's mail() function, and from the command line using the mail command. I'm using sendmail with mailutils. Since the last few days, it seems like it stopped working. When I try to send mail from the command line, I get the following in my syslog (and mail.info, and mail.log): Mar 3 13:27:58 doron-desktop sendmail[4693]: o23BRwlA004693: from=doron, size=84, class=0, nrcpts=1, msgid=<201003031127.o23BRwlA004693@doron-desktop.>, relay=doron@localhost Mar 3 13:27:58 doron-desktop sm-mta[4694]: o23BRwtQ004694: ruleset=check_rcpt, arg1=<doron@doron-desktop>, relay=localhost [127.0.0.1], reject=553 5.1.8 <doron@doron-desktop>... Domain of sender address doron@doron-desktop does not exist Mar 3 13:27:58 doron-desktop sendmail[4693]: o23BRwlA004693: to=<doron@doron-desktop>, ctladdr=doron (1000/1000), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30084, relay=[127.0.0.1] [127.0.0.1], dsn=5.1.8, stat=User unknown Mar 3 13:27:58 doron-desktop sm-mta[4694]: o23BRwtQ004694: from=<doron@doron-desktop>, size=84, class=0, nrcpts=0, proto=ESMTP, daemon=MTA-v4, relay=localhost [127.0.0.1] Trying to telnet locally to port 25 results in the following (same output for doron@doron-desktop): doron@doron-desktop:/var/mail$ telnet localhost 25 Trying ::1... Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. 220 doron-desktop. ESMTP Sendmail 8.14.3/8.14.3/Debian-9ubuntu1; Wed, 3 Mar 2010 13:26:06 +0200; (No UCE/UBE) logging access from: localhost(OK)-localhost [127.0.0.1] helo localhost 250 doron-desktop. Hello localhost [127.0.0.1], pleased to meet you mail from: doron@localhost 250 2.1.0 doron@localhost... Sender ok rcpt to: root@localhost 553 5.1.8 root@localhost... Domain of sender address doron@doron-desktop does not exist However - if I do the same, but use [email protected] in the mail from field, I get: 250 2.1.5 root... Recipient ok My /etc/hosts file: 127.0.0.1 localhost 127.0.1.1 doron-desktop doron-desktop. (If I don't have the "doron-desktop." (with the ending dot), the mail command takes a lot of time (around 30 seconds) until it responds, but the results are the same.)

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• Subversion - Retrieval of mergeinfo unsupported

  - by jamesthomson

  Hi, I've recently updated my Subversion package on Debian Etch to 1.5.1 via a back-port. I've gone through what I believe are all the appropriate steps but cannot for the life of me get past the following error message when I try to merge: Retrieval of mergeinfo unsupported by '.' The '.' isn't important as I get the same message whether I'm SSH'd on to the server or using TortoiseSVN through Windows. I'll take you through what I did to upgrade and test step by step: Update of Subversion Added the following line to /etc/apt/sources.list: deb http://www.backports.org/debian etch-backports main contrib non-free and then ran apt-get -s -t etch-backports install subversion Checked the version of the subversion installation Done this by running svnadmin --version and got the following output: svnadmin, version 1.5.1 (r32289) compiled Dec 11 2008, 18:10:14 Checked the client too using svn --version and got the following svn, version 1.5.1 (r32289) compiled Dec 11 2008, 18:10:14 Ok, so all looking good so far. Now I just need to upgrade the repository. After plenty of research, the most foolproof way to do this seemed to be to dump the repository and then load it again. So here's what I did: svnadmin dump /var/svn/repo > repo.dump rm -aR /var/svn/repo/* svnadmin create /var/svn/repo svnadmin load < repo.dump All that seemed to work fine. I then checked to see if the repository had been upgraded by looking at the contents of /var/svn/repo/db/format which gave: 3 layout sharded 1000 Again this indicated a Subversion 1.5 repository so all looking good. Now I try and do a merge using the Subversion client in Debian: svn mergeinfo https://mysvn/repo . and I get the following error: svn: Retrieval of mergeinfo unsupported by '.' I get the same error message whether I'm using the Debian shell on the same server or if I'm connecting via TortoiseSVN and a Windows box. If I browse to the repository using my web browser, the version number at the bottom reads: Powered by Subversion version 1.4.2 (r22196). In case it helps, the created date on mod_dav_svn.so is 2009-08-06 18:29 I just cannot figure out why I'm getting this message so any help pointing me in the right direction would be greatly appreciated. All the forum and mailing list posts that I found relating to this error were solved by doing an svnadmin upgrade, though I have actually tried that and still no joy. Thanks in advance, James.

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• iCloud stuff stops working while connected to OpenVPN [closed]

  - by Taco Bob

  I have a fairly simple OpenVPN setup on an OpenVZ VPS with Ubuntu 11.10. Client is the Viscosity client on Mac OS X 10.8.2, and after some testing, we can rule out the client as being part of the problem. Everything has been working fine except for Apple's iCloud stuff. Web surfing, email, FTP, NNTP, and Skype are all working as expected. It's ONLY the iCloud services that cease to function. If I connect to the VPN, iCloud stuff stops working. I no longer get anything in Messages, Calendar items don't get updated, and Notifications stop working. If I disconnect, the iCloud stuff all starts working. Connect again, iCloud stops working. Here's the server.conf: status openvpn-status.log log /var/log/openvpn.log verb 4 port 1194 proto udp dev tun ca /etc/openvpn/ca.crt cert /etc/openvpn/server.crt key /etc/openvpn/server.key dh /etc/openvpn/dh1024.pem server 10.9.8.0 255.255.255.0 ifconfig-pool-persist ipp.txt push "redirect-gateway def1" push “dhcp-option DNS 10.9.8.1? keepalive 10 120 duplicate-cn cipher BF-CBC comp-lzo user nobody group nogroup persist-key persist-tun tun-mtu 1500 mssfix 1400 I'm using iptables in a script, and it's also fairly simplistic. iptables -F iptables -t nat -F iptables -t mangle -F iptables -A FORWARD -i tun0 -o venet0 -j ACCEPT iptables -A FORWARD -i venet0 -o tun0 -j ACCEPT iptables -A INPUT -p tcp --dport 22 -j ACCEPT iptables -A INPUT -p tcp --dport 1194 -j ACCEPT iptables -A INPUT -p udp --dport 1194 -j ACCEPT iptables -t nat -A POSTROUTING -s 10.9.8.0/24 -j SNAT --to-source <server's public ip> echo 1 > /proc/sys/net/ipv4/ip_forward I tried forwarding ports as well, with no success. iptables -A FORWARD -p tcp -d 10.9.8.0/24 --dport 5222:5230 -j ACCEPT iptables -t nat -A PREROUTING -p tcp --dport 5222:5230 -j DNAT --to-destination 10.9.8.6 I am also sometimes behind a double-NAT situation that I have no control over. Client -> work VPN -> my OpenVPN box -> Internet. Client -> Airport Express -> ISP (which is doing NAT) -> my OpenVPN box -> Internet. Those two situations are just the fact of life where I am, and I cannot change them. I do have full control over my client and the OpenVPN server. I am completely out of ideas. I have posted a similar query at the OpenVPN forums, but it hasn't posted yet and seems to be in their moderation queue still. Tried on freenode irc channels, but nobody is awake, so here I am. I have Googled extensively for this, and can find nothing that is related. Help me get iCloud stuff working again!

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• Showing Directory Root When Launching Rails App Using Apache2 and Passenger

  - by LightBe Corp

  I have done the following in an attempt to host a Rails 3.2.3 application using Apache 2.2.21 and Passenger 3.0.13: Installed gem Passenger rvmsudo passenger-install-apache2-module Added website info in /etc/apache2/extra/httpd-vhosts.conf Added line to /etc/hosts (not sure if this was needed or not; not mentioned in Passenger documentation Uncommented out the line in /etc/apache2/httpd.conf to Include /etc/apache2/extra/httpd-vhosts.conf Restarted Apache When I try to pull up my website the following displays: Index of / Name Last modified Size Description Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/0.9.8r DAV/2 PHP/5.3.10 with Suhosin-Patch Phusion_Passenger/3.0.13 Server at lightbesandbox2.com Port 443 Here is /etc/hosts entry for the website: 127.0.0.1 www.lightbesandbox2.com Here is my /etc/apache2/extra/httpd-vhosts.conf entry for the website: NameVirtualHost *:80 <VirtualHost *:80> ServerName www.lightbesandbox2.com ServerAlias lightbesandbox2.com PassengerAppRoot /Users/server1/Sites/iktusnetlive_RoR/ DocumentRoot /Users/server1/Sites/iktusnetlive_RoR/public <Directory /Users/server1/Sites/iktusnetlive_RoR/public> AllowOverride all Options -MultiViews </Directory> </VirtualHost> When I do rvmsudo passenger-status I get the following output: ----------- General information ----------- max = 6 count = 1 active = 0 inactive = 1 Waiting on global queue: 0 ----------- Application groups ----------- /Users/server1/Sites/iktusnetlive_RoR/: App root: /Users/server1/Sites/iktusnetlive_RoR/ * PID: 8140 Sessions: 0 Processed: 2 Uptime: 20m 51s None of my assets are in the public folder in my Rails app. I have written an application using the template presented in Michael Hartl's Ruby on Rails Tutorial. The home page is in /app/views/static_pages/home.html.erb. I decided to copy an index.html file in the public folder to see if it would display. It displayed as I had hoped.. Is there a way to get Passenger to find my assets without me having to rewrite my application? Any help would be appreciated. Update 6/23/2012 10:00 am CDT GMT-6 I corrected the problems with my file and have successfully executed the rake assets:precompile command. I still get the index page as before. I have made no other changes. I did a passenger-status command and it is still loaded. Restarting Apache did nothing.

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• Authenticate by libpam-mysql and libnss-mysql (CentOS)

  - by Chris

  I'm trying to get MySQL to function as a backend for authenticating users on CentOS 6.3. So far I have successfully installed and configured libnss-mysql. I can test this by doing: # groups testuser testuser : sftp Testuser is a member of the sftp group in fact, all MySQL based useraccounts will be hardcoded to it. The sftp group is chrooted and forced to use internal-sftp so they cannot do anything but access their home directory. Then I configured pam-mysql and PAM to allow mysql logins. This also works.. When SELinux is not enforcing. When I do setenforce 1 users can no longer login. Error: Permission denied, please try again. This is my pam_mysql.conf file: users.host=localhost users.db_user=nss-pam-user users.db_passwd=*********** users.database=sftpusers users.table=users users.user_column=username users.password_column=password users.password_crypt=6 verbose=1 My /etc/pam.d/sshd: #%PAM-1.0 auth sufficient pam_sepermit.so auth include password-auth auth required pam_mysql.so config_file=/etc/pam_mysql.conf account sufficient pam_nologin.so account include password-auth account required pam_mysql.so config_file=/etc/pam_mysql.conf password include password-auth # pam_selinux.so close should be the first session rule session required pam_selinux.so close session required pam_loginuid.so # pam_selinux.so open should only be followed by sessions to be executed in the user context session required pam_selinux.so open env_params session optional pam_keyinit.so force revoke session include password-auth And to be complete the contents of some log files.. /var/logs/secure Nov 20 14:52:20 hostname unix_chkpwd[4891]: check pass; user unknown Nov 20 14:52:20 hostname unix_chkpwd[4891]: password check failed for user (testuser) Nov 20 14:52:20 hostname sshd[4880]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=192.168.10.107 user=testuser Nov 20 14:52:22 sftpusers sshd[4880]: Failed password for testuser from 192.168.10.107 port 51849 ssh2 /var/logs/audit/audit.log type=USER_AUTH msg=audit(1353420107.070:812): user pid=5285 uid=0 auid=500 ses=24 subj=unconfined_u:system_r:sshd_t:s0-s0:c0.c1023 msg='op=pubkey acct="testuser" exe="/usr/sbin/sshd" hostname=? addr=192.168.10.107 terminal=ssh res=failed' type=USER_AUTH msg=audit(1353420112.312:813): user pid=5285 uid=0 auid=500 ses=24 subj=unconfined_u:system_r:sshd_t:s0-s0:c0.c1023 msg='op=PAM:authentication acct="testuser" exe="/usr/sbin/sshd" hostname=192.168.10.107 addr=192.168.10.107 terminal=ssh res=failed' type=USER_AUTH msg=audit(1353420112.456:814): user pid=5285 uid=0 auid=500 ses=24 subj=unconfined_u:system_r:sshd_t:s0-s0:c0.c1023 msg='op=password acct="testuser" exe="/usr/sbin/sshd" hostname=? addr=192.168.10.107 terminal=ssh res=failed' I tried to let audit2why explain the problem but it remains silent even though there are some errors. Does anyone see the problem? Thanks! EDIT: Turns out it's almost working with setenforce 0 I can mkdir foobar but if I do a single ls I get an error: Received message too long 16777216

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• Passwordless ssh failed when login using username

  - by Aczire

  I was trying to setup Hadoop and was stumbled on passwordless ssh to localhost. I am getting a password prompt when trying to connect using ssh username@hostname format. But there is no problem connecting to the machine like ssh localhost or ssh hostname.com. Tried ssh-copy-id user@hostname but it did not work. Using CentOS 6.3 as normal user, I neither have root access or am a sudoer so editing any files like sshd_config is not possible (not even cat the sshd_config file contents). I hope the user login is possible since I can do login without password to localhost, right? Please advise, Here is the ssh debug output. [[email protected] ~]$ ssh -v [email protected] OpenSSH_5.3p1, OpenSSL 1.0.0-fips 29 Mar 2010 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug1: Connecting to hostname.com [::1] port 22. debug1: Connection established. debug1: identity file /home/user/.ssh/identity type -1 debug1: identity file /home/user/.ssh/id_rsa type -1 debug1: identity file /home/user/.ssh/id_dsa type 2 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3 debug1: match: OpenSSH_5.3 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.3 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host 'hostname.com' is known and matches the RSA host key. debug1: Found key in /home/user/.ssh/known_hosts:1 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug1: Next authentication method: gssapi-keyex debug1: No valid Key exchange context debug1: Next authentication method: gssapi-with-mic debug1: Unspecified GSS failure. Minor code may provide more information Credentials cache file '/tmp/krb5cc_500' not found debug1: Unspecified GSS failure. Minor code may provide more information Credentials cache file '/tmp/krb5cc_500' not found debug1: Unspecified GSS failure. Minor code may provide more information debug1: Unspecified GSS failure. Minor code may provide more information debug1: Next authentication method: publickey debug1: Offering public key: /home/user/.ssh/id_dsa debug1: Server accepts key: pkalg ssh-dss blen 434 Agent admitted failure to sign using the key. debug1: Trying private key: /home/user/.ssh/identity debug1: Trying private key: /home/user/.ssh/id_rsa debug1: Next authentication method: password [email protected]'s password:

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• My facebook blocking ACL has stopped working

  - by Josh

  This probably very simple. This was setup before I arrived, and has been working to block facebook. I recently eliminated some static port forwarding on this 2691 (as in, I don't think anything else has changed), and now facebook is once again accessible. Why is this list not doing what it seems like it should be doing (and was doing)? Would an extended outbound ACL be more appropriate (I think that would have been my thought if I had been tasked with creating this in the first place)? Something different? I've included below what I believe are the relevant parts of the config. interface FastEthernet0/0 ip address my.pub.ip.add my.ip.add.msk ip access-group 1 in ip nat outside ip virtual-reassembly duplex auto speed auto access-list 1 deny 69.171.224.0 0.0.31.255 access-list 1 deny 74.119.76.0 0.0.3.255 access-list 1 deny 204.15.20.0 0.0.3.255 access-list 1 deny 66.220.144.0 0.0.15.255 access-list 1 deny 69.63.176.0 0.0.15.255 access-list 1 permit any ip nat inside source list 105 interface FastEthernet0/0 overload access-list 105 deny ip 192.168.0.0 0.0.0.255 192.168.8.0 0.0.0.255 access-list 105 permit ip 192.168.0.0 0.0.0.255 any access-list 105 permit ip 192.168.1.0 0.0.0.255 any EDIT ACL is once again blocking Facebook. Here is the new definition for those interested... access-list 1 deny 66.220.144.0 0.0.7.255 access-list 1 deny 66.220.152.0 0.0.7.255 access-list 1 deny 69.63.176.0 0.0.7.255 access-list 1 deny 69.63.176.0 0.0.0.255 access-list 1 deny 69.63.184.0 0.0.7.255 access-list 1 deny 69.171.224.0 0.0.15.255 access-list 1 deny 69.171.239.0 0.0.0.255 access-list 1 deny 69.171.240.0 0.0.15.255 access-list 1 deny 69.171.255.0 0.0.0.255 access-list 1 deny 74.119.76.0 0.0.3.255 access-list 1 deny 173.252.64.0 0.0.31.255 access-list 1 deny 173.252.70.0 0.0.0.255 access-list 1 deny 173.252.96.0 0.0.31.255 access-list 1 deny 204.15.20.0 0.0.3.255 access-list 1 permit any

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• 401 - Unauthorized On Server 2008 R2 IIS 7.5

  - by mxmissile

  I have a web application deployed to Server 2008 IIS 7.5 box. From remote it gives this error: 401 - Unauthorized: Access is denied due to invalid credentials. (remote = desktops on the same LAN) Have tried several remote clients using different browsers, all the same result. (IE, FF, and Chrome) Hitting the application from the desktop of the server itself works flawlessly. However I have not tried Firebug on the server desktop. I would assume it's still issuing a 401 status code yet returning the content anyway. See Update #2. The application is using Anonymous Authentication. The application is written in .NET 4.0 Asp.Net using the MVC framework. Static content works fine, example: http://server.com/content/image.jpg Sysinternals procmon returns these 2 results for each request: FAST IO DISALLOWED and PATH NOT FOUND. I have 2 other MVC apps running fine on the same server. I have checked the security on the folders and they all match. App runs fine on a Server 2008 IIS 7.0 box. Nothing shows up in the Event log on the server related to this. Pulling my hair out here, any troubleshooting tips? UPDATE #1: This just get's more WTF as I dig. If I click on the Application in IIS Manager - Error Pages - Edit Feature Settings select Detailed Errors, the app works remotely. Not leaving this on, so problem is not solved yet, its just more confusing. UPDATE #2: Using Firebug, I see that the Status is still 401 Unauthorized, but the Response is returning the application's correct HTML. UPDATE #3 Playing around with Failed Request Tracing, here is the WARNING Request Trace that is causing the 401: ModuleName ManagedPipelineHandler Notification 128 HttpStatus 401 HttpReason Unauthorized HttpSubStatus 0 ErrorCode 0 ConfigExceptionInfo Notification EXECUTE_REQUEST_HANDLER ErrorCode The operation completed successfully. (0x0) Update #4 Regular IIS log is showing this: #Software: Microsoft Internet Information Services 7.5 #Version: 1.0 #Date: 2010-07-20 19:17:22 #Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) sc-status sc-substatus sc-win32-status time-taken 2010-07-20 19:17:22 10.10.1.10 GET /Purchasing/Home - 80 - 10.10.1.12 Mozilla/5.0+(Windows;+U;+Windows+NT+6.1;+en-US;+rv:1.9.2.6)+Gecko/20100625+Firefox/3.6.6 401 0 0 4414

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• Email server can send internal, but messages never arrive at external recipients

  - by Chase Florell

  I'm running MailEnable on my server, and have been for many years. Recently we had an attack on our server, and I was able to close the hole. Since then, our mail server doesn't seem to be sending mail out. If I send an email from myself to another account hosted on the server, the email arrives as expected. If I send an email from my gmail account to my business account, the email also arrives as expected The problem comes when I send from my business account to an external domain I tried the following Gmail.com Hotmail.com Shaw.ca When I send to any of the above The message leaves my client as expected, The logs appear to accept and forward on the message The SMTP outbound que is empty The message never arrives I have checked our domain with mxtoolbox.com senderbase.org And neither of them are reporting any problems with our domain. I have ensured that port 25 is open (along with the other standard ports) Here is one of the log entries from the SMTP connector 11/05/13 12:10:00 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 220 mx1.example.com ESMTP MailEnable Service, Version: 6.81--6.81 ready at 11/05/13 12:10:00 0 0 11/05/13 12:10:00 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 EHLO EHLO ASSP.nospam 250-mx1.example.com [127.0.0.1], this server offers 6 extensions 159 18 11/05/13 12:10:00 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 EHLO EHLO ASSP.nospam 250-mx1.example.com [127.0.0.1], this server offers 6 extensions 159 18 11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 AUTH AUTH LOGIN 334 VXNlcm5hbWU6 18 12 11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 AUTH {blank} 334 UGFzc3dvcmQ6 18 26 [email protected] 11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 AUTH Y29sb25lbGZhY2U= 235 Authenticated 19 18 [email protected] 11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 MAIL MAIL FROM:<[email protected]> 250 Requested mail action okay, completed 43 31 [email protected] 11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 RCPT RCPT TO:<[email protected]> 250 Requested mail action okay, completed 43 35 [email protected] 11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 DATA DATA 354 Start mail input; end with <CRLF>.<CRLF> 46 6 [email protected] Here are the headers of the sent message X-Assp-Version: 1.7.5.7(1.0.07) on ASSP.nospam X-Assp-ID: ASSP.nospam 78601-04523 X-Assp-Intended-For: [email protected] X-Assp-Envelope-From: [email protected] Received: from [10.10.1.101] ([68.147.245.149] helo=[10.10.1.101]) with IPv4:587 by ASSP.nospam; 5 Nov 2013 12:10:00 -0700 From: Chase Florell <[email protected]> Content-Type: text/plain Content-Transfer-Encoding: 7bit Subject: Test Message Message-Id: <[email protected]> Date: Tue, 5 Nov 2013 12:10:18 -0700 To: Chase Florell <[email protected]> Mime-Version: 1.0 (Mac OS X Mail 7.0 \(1816\)) X-Mailer: Apple Mail (2.1816) . Where else can I check to see if there is something broken? What could cause a problem like this whereby the message appears to send, but never arrives, and never returns a bounce?

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• Attempting to ping RPC endpoint 6001/6004 (Exchange Information Store) on server on Exchange2010

  - by MadBoy

  I have Exchange 2010 in hosting setup like: TMG 2010 as load balancer Exchange 2010 x 2 (CAS,MAILBOX,HUB on each server) AD1, AD2 machines File witness All people currently connect thru OWA or POP3/SMTP and that works fine. The problem is autodiscovery doesn't work and RPC in terms of setting up Outlook doesn't work too. It doesn't work if I am connected with VPN or not. The thing is it used to work. Before reinstall of my machine 2 days ago I was able to get mails successfully thru Outlook that was set up using autodiscovery (but I was getting reports setting up of new clients wasn't working - so not sure why my outlook continued to work). I used https://www.testexchangeconnectivity.com to track it down and basically the message is more or less this: Attempting to ping RPC endpoint 6004 (NSPI Proxy Interface) on server autodiscover.domain.pl. The attempt to ping the endpoint failed. Additional Details The RPC_S_SERVER_UNAVAILABLE error (0x6ba) was thrown by the RPC Runtime process. I tried different solutions like disabling IP v6, followed couple of links and did all they proposed and it's still at the very same point: C:\Users\admin>netstat -a | find "6001" TCP 0.0.0.0:6001 EXCHANGE2:0 LISTENING TCP [::]:6001 EXCHANGE2:0 LISTENING C:\Users\admin>netstat -a | find "6002" C:\Users\admin>netstat -a | find "6003" C:\Users\admin>netstat -a | find "6004" I followed (and few others): http://helewix.com/blog/index.php/Microsoft-Solutions/2011/02/10/exchange-2010-how-to-open-ports-6001-6002-and-6004-on-your-server-for-telnet-to-work-and-rpc-to-be-able-to-connect-2 http://blogs.technet.com/b/exchange/archive/2008/06/20/3405633.aspx http://messagexchange.blogspot.com/2008/12/outlook-anywhere-failing-rpc-end-points.html Although most relate to Exchange 2007 and I have Exchange 2010 but there's not much things I can find on Exchange 2010 for the current problem. After applying all of those solutions error 6004 changed into error 6001 which doesn't bring me to my problems any closer. At this point even thou error was 6001 and 6004 was no more the 6004 port was still closed while 6001 stayed open. Attempting to ping RPC endpoint 6001 (Exchange Information Store) on server autodiscover.domain.pl. The attempt to ping the endpoint failed. Additional Details The RPC_S_SERVER_UNAVAILABLE error (0x6ba) was thrown by the RPC Runtime process. C:\Users\admin>netstat -a | find "6001" TCP 0.0.0.0:6001 EXCHANGE2:0 LISTENING TCP [::]:6001 EXCHANGE2:0 LISTENING C:\Users\admin>netstat -a | find "6002" C:\Users\admin>netstat -a | find "6003" C:\Users\admin>netstat -a | find "6004" So I reverted back to square one. I suspect it's a problem with TMG but really can't be sure. I tried multiple combinations but all fail.

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• "Hostile" network in the company - please comment on a security setup

  - by TomTom

  I have a little specific problem here that I want (need) to solve in a satisfactory way. My company has multiple (IPv4) networks that are controlled by our router sitting in the middle. Typical smaller shop setup. There is now one additional network that has an IP Range OUTSIDE of our control, connected to the internet with another router OUTSIDE of our control. Call it a project network that is part of another companies network and combined via VPN they set up. This means: They control the router that is used for this network and They can reconfigure things so that they can access the machines in this network. The network is physically split on our end through some VLAN capable switches as it covers three locations. At one end there is the router the other company controls. I Need / want to give the machines used in this network access to my company network. In fact, it may be good to make them part of my active directory domain. The people working on those machines are part of my company. BUT - I need to do so without compromising the security of my company network from outside influence. Any sort of router integration using the externally controlled router is out by this idea So, my idea is this: We accept the IPv4 address space and network topology in this network is not under our control. We seek alternatives to integrate those machines into our company network. The 2 concepts I came up with are: Use some sort of VPN - have the machines log into VPN. Thanks to them using modern windows, this could be transparent DirectAccess. This essentially treats the other IP space not different than any restaurant network a laptop of the company goes in. Alternatively - establish IPv6 routing to this ethernet segment. But - and this is a trick - block all IPv6 packets in the switch before they hit the third party controlled router, so that even IF they turn on IPv6 on that thing (not used now, but they could do it) they would get not a single packet. The switch can nicely do that by pulling all IPv6 traffic coming to that port into a separate VLAN (based on ethernet protocol type). Anyone sees a problem with using he switch to isolate the outer from IPv6? Any security hole? It is sad we have to treat this network as hostile - would be a lot easier - but the support personnel there is of "known dubious quality" and the legal side is clear - we can not fulfill our obligations when we integrate them into our company while they are under a jurisdiction we don't have a say in.

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• RHEL 6.x on Rackspace Cloud and Dedicated hardware experiencing Redis Timeouts

  - by zhallett

  I just recently set up a mixture of RHEL 6.1 Rackspace cloud hosts and RHEL 6.2 dedicated hosts using Rackconnect. I am experiencing intermittent Redis timeouts from within our Rails 3.2.8 app with Redis 2.4.16 running on the RHEL 6.2 dedicated hosts. There is no network latency or packet loss. Also there are no errors on any interfaces on our cloud or dedicated servers or on the managed firewall from Rackspace. When Redis timesout, there is nothing logged within redis even though it is set up to do debug logging. The only error we receive is from Airbrake saying there was a Redis timeout. Network topology: RHEL 6.1 cloud hosts <--> Alert logic IDS <--> Cisco ASA 5510 <--> RHEL 6.2 dedicated hosts (web nodes) (two way NAT) (db hosts running redis) Ping from db host to web host: 64 bytes from 10.181.230.180: icmp_seq=998 ttl=64 time=0.520 ms 64 bytes from 10.181.230.180: icmp_seq=999 ttl=64 time=0.579 ms 64 bytes from 10.181.230.180: icmp_seq=1000 ttl=64 time=0.482 ms --- web1.xxxxxx.com ping statistics --- 1000 packets transmitted, 1000 received, 0% packet loss, time 999007ms rtt min/avg/max/mdev = 0.359/0.535/5.684/0.200 ms Ping from web host to db host: 64 bytes from 192.168.100.26: icmp_seq=998 ttl=64 time=0.544 ms 64 bytes from 192.168.100.26: icmp_seq=999 ttl=64 time=0.452 ms 64 bytes from 192.168.100.26: icmp_seq=1000 ttl=64 time=0.529 ms --- data1.xxxxxx.com ping statistics --- 1000 packets transmitted, 1000 received, 0% packet loss, time 999017ms rtt min/avg/max/mdev = 0.358/0.499/6.120/0.201 ms Redis config: daemonize yes pidfile /var/run/redis/6379/redis_6379.pid port 6379 timeout 0 loglevel debug logfile /var/lib/redis/log syslog-enabled yes syslog-ident redis-6379 syslog-facility local0 databases 16 save 900 1 save 300 10 save 60 10000 rdbcompression yes dbfilename dump-6379.rdb dir /var/lib/redis maxclients 10000 maxmemory-policy volatile-lru maxmemory-samples 3 appendfilename appendonly-6379.aof appendfsync everysec no-appendfsync-on-rewrite no auto-aof-rewrite-percentage 100 auto-aof-rewrite-min-size 64mb slowlog-log-slower-than 10000 slowlog-max-len 1024 vm-enabled no vm-swap-file /tmp/redis.swap vm-max-memory 0 vm-page-size 32 vm-pages 134217728 vm-max-threads 4 hash-max-zipmap-entries 512 hash-max-zipmap-value 64 list-max-ziplist-entries 512 list-max-ziplist-value 64 set-max-intset-entries 512 zset-max-ziplist-entries 128 zset-max-ziplist-value 64 activerehashing yes Redis-cli info: redis-cli info redis_version:2.4.16 redis_git_sha1:00000000 redis_git_dirty:0 arch_bits:64 multiplexing_api:epoll gcc_version:4.4.6 process_id:4174 uptime_in_seconds:79346 uptime_in_days:0 lru_clock:1064644 used_cpu_sys:13.08 used_cpu_user:19.81 used_cpu_sys_children:1.56 used_cpu_user_children:7.69 connected_clients:167 connected_slaves:0 client_longest_output_list:0 client_biggest_input_buf:0 blocked_clients:6 used_memory:15060312 used_memory_human:14.36M used_memory_rss:22061056 used_memory_peak:15265928 used_memory_peak_human:14.56M mem_fragmentation_ratio:1.46 mem_allocator:jemalloc-3.0.0 loading:0 aof_enabled:0 changes_since_last_save:166 bgsave_in_progress:0 last_save_time:1352823542 bgrewriteaof_in_progress:0 total_connections_received:286 total_commands_processed:507254 expired_keys:0 evicted_keys:0 keyspace_hits:1509 keyspace_misses:65167 pubsub_channels:0 pubsub_patterns:0 latest_fork_usec:690 vm_enabled:0 role:master db0:keys=6,expires=0 edit 1: add redis-cli info output

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• innobackupex - after restoring - quit without updating PID file

  - by clarkk

  After restoring a backup the server can't start.. restoring # tar -izxf /var/www/bak/db/2013-11-10-1437_mysql.tar.gz -C /var/www/bak/db_import # innobackupex --use-memory=1G --apply-log /var/www/bak/db_import # service mysql stop # mv /var/lib/mysql /var/lib/mysql-old # mkdir /var/lib/mysql # innobackupex --copy-back /var/www/bak/db_import # chown -R mysql:mysql /var/lib/mysql # service mysql start error log 131110 21:24:20 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql 2013-11-10 21:24:21 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2013-11-10 21:24:21 6194 [Warning] Using pre 5.5 semantics to load error messages from /opt/mysql/server-5.6/share/english/. 2013-11-10 21:24:21 6194 [Warning] If this is not intended, refer to the documentation for valid usage of --lc-messages-dir and --language parameters. 2013-11-10 21:24:21 6194 [Note] Plugin 'FEDERATED' is disabled. /usr/local/mysql/bin/mysqld: Table 'mysql.plugin' doesn't exist 2013-11-10 21:24:21 6194 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it. 2013-11-10 21:24:21 6194 [Note] InnoDB: The InnoDB memory heap is disabled 2013-11-10 21:24:21 6194 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2013-11-10 21:24:21 6194 [Note] InnoDB: Compressed tables use zlib 1.2.3 2013-11-10 21:24:21 6194 [Note] InnoDB: Using Linux native AIO 2013-11-10 21:24:21 6194 [Note] InnoDB: Not using CPU crc32 instructions 2013-11-10 21:24:21 6194 [Note] InnoDB: Initializing buffer pool, size = 128.0M 2013-11-10 21:24:21 6194 [Note] InnoDB: Completed initialization of buffer pool 2013-11-10 21:24:21 6194 [Note] InnoDB: Highest supported file format is Barracuda. 2013-11-10 21:24:22 6194 [Note] InnoDB: 128 rollback segment(s) are active. 2013-11-10 21:24:22 6194 [Note] InnoDB: Waiting for purge to start 2013-11-10 21:24:22 6194 [Note] InnoDB: 5.6.12 started; log sequence number 636992658 2013-11-10 21:24:22 6194 [Note] Server hostname (bind-address): '127.0.0.1'; port: 3306 2013-11-10 21:24:22 6194 [Note] - '127.0.0.1' resolves to '127.0.0.1'; 2013-11-10 21:24:22 6194 [Note] Server socket created on IP: '127.0.0.1'. 2013-11-10 21:24:22 6194 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.user' doesn't exist 131110 21:24:22 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended mysql_upgrade /opt/mysql/server-5.6/bin/mysql_upgrade -u root -pxxxxx -P 3308 Warning: Using a password on the command line interface can be insecure. Looking for 'mysql' as: /opt/mysql/server-5.6/bin/mysql Looking for 'mysqlcheck' as: /opt/mysql/server-5.6/bin/mysqlcheck FATAL ERROR: Upgrade failed

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• Debugging IO limitation

  - by Martin F

  I have a Fedora box with some severe IO limitations which I have no idea how to debug. The server has a Areca Technology Corp. ARC-1130 12-Port PCI-X to SATA RAID Controller with 12 7200 RPM 1.5 TB disks and a Marvell Technology Group Ltd. 88E8050 PCI-E ASF Gigabit Ethernet Controller. uname -a output: 2.6.32.11-99.fc12.x86_64 #1 SMP Mon Apr 5 19:59:38 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux The server is a file server running Nginx with the stub status module enabled, so I can see the current amount of connections. The problem present itself when I have a high number of simultaneous connections in a writing state. Usually around 350, at this very moment it's at 590 and the server is almost unusable and stuck at 230mbit/s. If I run stop and hit 1 to see CPU core usages I have all 4 cores with around 99% io wait, if I run iotop the nginx workers are the only processes producing any read load, currently at around 25MB/s. I have each of the workers bound to their own core. Initially I figured it was just the disks being bugged. But I've run fscheck and smartmontools checks and found no errors. I also ran an iozone test which you can see the result of here: http://www.pastie.org/951667.txt?key=fimcvljulnuqy2dcdxa Additionally, when the amount of connections are low I have no problem getting a good speed. If I wget over the local network it easily hits 60MB/sec. Right now I just tried putting a file in /dev/shm, then I symlinked a file from the public dir to it and used wget over the local network and only got 50KB/s. Also, if I try to cp /dev/shm/test /root/test it quickly copies around 740MB and then slows down HEAVILY. Again with iotop reporting 99% iowait. I'm not really sure how to go about figuring out what the problems are. It could be a natural disk limitation but then the file from /dev/shm ought to transfer so it seems there's a network limit, but that's fine when there's not many connections. Perhaps it's a TCP stack problem but I really have no idea how to check that. Any suggestions on how to proceed with debugging would be very welcome. If additional information is required then let me know and I'll try to get it. Thanks.

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• iptables blocking ssh communication

  - by Michal Sapsa

  I'm using this script for iptables: #!/bin/sh echo "1" > /proc/sys/net/ipv4/ip_forward iptables -F iptables -X iptables -F -t nat iptables -X -t nat iptables -F -t filter iptables -X -t filter iptables -t filter -P FORWARD DROP iptables -t filter -A FORWARD -s 192.168.0.0/255.255.0.0 -d 0/0 -j ACCEPT iptables -t filter -A FORWARD -s 0/0 -d 192.168.0.0/255.255.0.0 -j ACCEPT iptables -t nat -A POSTROUTING -s 10.8.0.1/255.255.255.0 -j MASQUERADE iptables -A FORWARD -s 10.8.0.1/255.255.255.0 -j ACCEPT iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -d 0/0 -j MASQUERADE iptables -I FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu iptables -t nat -A PREROUTING -i eth1 -p udp --dport 16161 -j DNAT --to 192.168.0.251:16161 iptables -t nat -A PREROUTING -i eth1 -p udp --sport 16161 -j DNAT --to 192.168.0.251:16161 #openvpn iptables -I INPUT -p tcp --dport 1194 -j ACCEPT iptables -I INPUT -p udp --dport 1194 -j ACCEPT I end up with some iptables rules that should work but don't work - probably because of me. # Generated by iptables-save v1.4.12 on Mon May 26 13:15:43 2014 *raw :PREROUTING ACCEPT [1657523:1357257330] :OUTPUT ACCEPT [36804:34834370] -A PREROUTING -p icmp -j TRACE -A PREROUTING -p tcp -j TRACE -A OUTPUT -p icmp -j TRACE -A OUTPUT -p tcp -j TRACE COMMIT # Completed on Mon May 26 13:15:43 2014 # Generated by iptables-save v1.4.12 on Mon May 26 13:15:43 2014 *nat :PREROUTING ACCEPT [5033:345623] :INPUT ACCEPT [154:34662] :OUTPUT ACCEPT [6:1968] :POSTROUTING ACCEPT [2:120] -A PREROUTING -i eth0 -p tcp -m tcp --dport 16161 -j DNAT --to-destination 192.168.0.251:22 -A PREROUTING -i eth1 -p tcp -m tcp --dport 16161 -j DNAT --to-destination 192.168.0.251:22 -A POSTROUTING -s 10.8.0.0/24 -j MASQUERADE -A POSTROUTING -s 192.168.0.0/24 -j MASQUERADE COMMIT # Completed on Mon May 26 13:15:44 2014 # Generated by iptables-save v1.4.12 on Mon May 26 13:15:44 2014 *filter :INPUT ACCEPT [548:69692] :FORWARD DROP [8:384] :OUTPUT ACCEPT [2120:1097479] -A INPUT -p udp -m udp --dport 1194 -j ACCEPT -A INPUT -p tcp -m tcp --dport 1194 -j ACCEPT -A FORWARD -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu -A FORWARD -s 192.168.0.0/16 -j ACCEPT -A FORWARD -d 192.168.0.0/16 -j ACCEPT -A FORWARD -s 10.8.0.0/24 -j ACCEPT -A FORWARD -i eth0 -o eth1 -p tcp -m tcp --dport 22 -j ACCEPT -A FORWARD -i eth1 -o eth0 -p tcp -m tcp --dport 22 -j ACCEPT COMMIT TRACE at PREROUTEING AND OUTPUT are only for debuging this thing. When I ssh at public ip with port 16161 I don't get any message, only TimeOut so it looks like I don't get communication back to remote server. ETH0 is the world, ETH1 is LAN Any IPTABLES Masters willing to give a hand ? iptables -vL Chain INPUT (policy ACCEPT 20548 packets, 3198K bytes) pkts bytes target prot opt in out source destination 38822 7014K ACCEPT udp -- any any anywhere anywhere udp dpt:openvpn 0 0 ACCEPT tcp -- any any anywhere anywhere tcp dpt:openvpn Chain FORWARD (policy DROP 1129 packets, 64390 bytes) pkts bytes target prot opt in out source destination 214K 11M TCPMSS tcp -- any any anywhere anywhere tcpflags: SYN,RST/SYN TCPMSS clamp to PMTU 4565K 1090M ACCEPT all -- any any 192.168.0.0/16 anywhere 5916K 7315M ACCEPT all -- any any anywhere 192.168.0.0/16 0 0 ACCEPT all -- any any 10.8.0.0/24 anywhere 0 0 ACCEPT tcp -- any any anywhere 192.168.0.251 tcp dpt:16161 Chain OUTPUT (policy ACCEPT 59462 packets, 19M bytes) pkts bytes target prot opt in out source destination

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• Small Business Server services will not start, and remote desktop and UAC are broken

  - by Stephen Jennings

  Yesterday I began setting up a server with Windows Small Business Server 2008. All I am configuring it for right now is to be a domain controller and Exchange server. I completed the initial setup of SBS then started looking through different connection options (allowing VPN versus using a TS Gateway). After I rebooted one time, I started having three not-obviously-related issues: First, I could no longer remote desktop into the computer. I ran TCPView and saw that it was no longer listening on port 3389. I checked everything in Terminal Service Configuration but everything shows the computer ought to be allowing connections. Also, when I tried to use anything that required user account control elevation, the UAC dialog never popped up and the program that was waiting just froze. If I try to run "regedit" from the Run box, for example, it never appears. When I run in safe mode which does not run with UAC, I was able to access everything. I didn't want to deal with it, so I turned off UAC and rebooted. Finally, in the Windows SBS Console, there are status indicators for Security, Updates, Backup, and Other Alerts. The first three get stuck saying "Querying". Looking in the computer alerts, I have events showing the following services stopped: Background Intelligent Transfer Service KtmRm for Distributed Transaction Coordinator Distributed Transaction Coordinator Microsoft Exchange Information Store Microsoft Exchange System Attendant Microsoft Exchange Transport Windows Remote Management Update Services Windows Update I figured I must have configured something wrong accidentally and I couldn't find anything using Google explaining what might be the case, so I just decided to format the hard drive and reinstall SBS from scratch. I did this and everything was working last night, but I just turned the machine back on and it is doing the same thing again! On my second install, I did not configure anything except the following (all from SBS Console): Connect to the Internet (set IP and router address) Turn off customer feedback. Set up internet address. Decline to use a Smart Host for email. Added one standard user account. Since this happened again and I was very careful the second time not to configure anything outside of the SBS Console, I feel like there's something else going on. Right now the machine is on an isolated network that does have internet access. My desktop is the only other machine plugged into this network. Any and all help is appreciated (before I tear my hair out!)

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• How to configure Transparent IP Address Sharing (TAS) on a Mediatrix 4102 with DGW 2.0 firmware?

  - by Pascal Bourque

  I am making the switch to VoIP. I chose voip.ms as my service provider and Mediatrix 4102 as my ATA. One reason why I chose the Mediatrix over other popular consumer ATAs is that it's supposed to be easy to place it in front of the router, so it can give priority to its own upstream traffic over the home network's upstream traffic. This is supposed to work transparently, with the ATA and router sharing the same public IP address (the one obtained from the modem). They call this feaure Transparent IP Address Sharing, or TAS. Their promotional brochure describes it like this: The Mediatrix 4102 also uses its innovative TAS (Transparent IP Address Sharing) technology and an embedded PPPoE client to allow the PC (or router) connected to the second Ethernet port to have the same public IP address, eliminating the need for private IP addresses or address translations. I am interested by this feature because my router, an Apple Time Capsule, doesn't support QoS and cannot give priority to the voice packets if the ATA is behind the router. However, after hours of searching the web, reading the documentation, and good ol' trial and error, I haven't been able to configure the Mediatrix to run in this mode. Then I found a version of the manual that looks like it was for a previous version of the firmware (SIP), where there is an entire section dedicated to configuring TAS (starting at page 209). But my Mediatrix comes with the DGW 2.0 firmware, whose documentation does not mention TAS at all. So I tried to follow the TAS setup instructions from the SIP documentation and apply them to my DGW firmware, using the Variable Mapping Between SIP v5.0 and DGW v2.0 document as a reference, but no success. Some required SIP variables don't have an equivalent in DGW. So it looks like the DGW firmware does not support TAS at all, or if it does they are not doing anything to help us set it up. So right now, the Mediatrix is behind the router and VoIP works perfectly except when my upstream bandwidth is saturated. My questions are: Is downgrading to SIP firmware the only way to have my Mediatrix 4102 run in TAS mode? If not, anybody knows how to setup TAS on the DGW firmware? Is TAS mode the only way to give priority to the voice packets if I want to keep my current router (Apple Time Capsule)? Thanks!

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• Wake On Lan only works on first boot, not sequent ones

  - by sp3ctum

  I have converted my old Dell Latitude D410 laptop to a server for tinkering. It is running an updated Debian Squeeze (6) with a Xen enabled kernel (I want to toy with virtual machines later on). I am running it 'headless' via an ethernet connection. I am struggling to enable Wake On Lan for the box. I have enabled the setting in the BIOS, and it works nicely, but only for the first time after the power cord is plugged in. Here is my test: Plug in power cord, don't boot yet Send magic Wake On Lan packet from test machine (Ubuntu) using the wakeonlan program Server expected to start (does every time) Once server has booted, log in via ssh and shut it down via the operating system After shutdown, wake server up via WOL again (fails every time) Some observations: Right after step 1 I can see the integrated NIC has a light on. I deduce this means the NIC gets adequate power and that the ethernet cable is connected to my switch. This light is not on after step 4 (the shutdown stage). The light becomes back on after I disconnect and reconnect the power cord, after which WOL works as well. After step 4 I can verify that wake on lan is enabled via the ethtool program (repeatable each time) This blog post suggested the problem may lay in the fact the motherboard might not be giving adequate power to the NIC after shutdown, so I copied an acpitool script that supposedly should signal the system to give the needed power to the card when shut down. Obviously it did not fix my issue. I have included the relevant power settings in the paste below. I have tried different combinations of parameters of shutdown (the program) options, as well as the poweroff program. I even tried "telinit 0", which I figured would do the most direct boot via software. If I keep the laptop's power button pressed down and do a hard boot this way, the light on the ethernet port stays lit and a WOL is possible. I copied a bunch of hopefully useful information in this paste I have tried this with the laptop battery connected and without it. I get the same result. Promptly pressing the power button causes the system to shut down with the message "The system is going down for system halt NOW!", and WOL is still unsuccessful.

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• USB Flash not recognised by Windows and BIOS, but works fine in Linux

  - by bbalegere

  I have a Transcend JetFLash 2GB USB Drive.It was working fine and I had been using it occasionally. All of sudden it stopped working in all versions of Windows . The USB Drive is also not recognised by the BIOS.It does not show in the list of bootable devices.(It used show up in the list earlier) However the USB Drive works fine in my Linux Mint 11 OS. Running dmesg gives this [ 941.812192] usb 1-2: new high speed USB device using ehci_hcd and address 4 [ 941.936178] usb 1-2: device descriptor read/64, error -71 [ 942.164188] usb 1-2: device descriptor read/64, error -71 [ 942.380189] usb 1-2: new high speed USB device using ehci_hcd and address 5 [ 942.504138] usb 1-2: device descriptor read/64, error -71 [ 942.732179] usb 1-2: device descriptor read/64, error -71 [ 942.948154] usb 1-2: new high speed USB device using ehci_hcd and address 6 [ 943.364134] usb 1-2: device not accepting address 6, error -71 [ 943.476172] usb 1-2: new high speed USB device using ehci_hcd and address 7 [ 943.892140] usb 1-2: device not accepting address 7, error -71 [ 943.892191] hub 1-0:1.0: unable to enumerate USB device on port 2 [ 944.296190] usb 2-2: new full speed USB device using uhci_hcd and address 3 [ 944.438251] usb 2-2: not running at top speed; connect to a high speed hub [ 944.709928] usbcore: registered new interface driver uas [ 944.729999] Initializing USB Mass Storage driver... [ 944.730509] scsi6 : usb-storage 2-2:1.0 [ 944.730908] usbcore: registered new interface driver usb-storage [ 944.730917] USB Mass Storage support registered. [ 945.736320] scsi 6:0:0:0: Direct-Access JetFlash Transcend 2GB 8.07 PQ: 0 ANSI: 2 [ 945.744547] sd 6:0:0:0: Attached scsi generic sg1 type 0 [ 945.753316] sd 6:0:0:0: [sdb] 3944448 512-byte logical blocks: (2.01 GB/1.88 GiB) [ 945.758274] sd 6:0:0:0: [sdb] Write Protect is off [ 945.758288] sd 6:0:0:0: [sdb] Mode Sense: 03 00 00 00 [ 945.765167] sd 6:0:0:0: [sdb] No Caching mode page present [ 945.765181] sd 6:0:0:0: [sdb] Assuming drive cache: write through [ 945.784309] sd 6:0:0:0: [sdb] No Caching mode page present [ 945.784323] sd 6:0:0:0: [sdb] Assuming drive cache: write through [ 946.239512] sdb: sdb1 [ 946.257279] sd 6:0:0:0: [sdb] No Caching mode page present [ 946.257292] sd 6:0:0:0: [sdb] Assuming drive cache: write through [ 946.257302] sd 6:0:0:0: [sdb] Attached SCSI removable disk Looks like there is something wrong the USB Drive.It is not recognised in any computer running Windows. Is there any way to fix this? Any idea why this problem occurred ?

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