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• Windows Server 2012 Essentials - Trying to setup "Anywhere Access" but the "Computer Access" list for users is blank

  - by tetranz

  I have a new installation of Windows Server 2012 Essentials and I'm trying to setup "Anywhere Access" for both VPN and remote desktop. The basic setup is all working. Shared folders is working but remote desktop has no computers available. On the server, if I edit a user with the Essentials Dashboard and go to "Computer access", the list is empty. The desktop computers have been joined to the domain. I can see them in AD under "Computers". I think our mistake was that we didn't use the connector tool to join the domain. We moved from a previous domain and went to Computer / Properties, changed the domain and started with a new profile. Is there something I can do now to make these desktops available for remote desktop? I can access a desktop directly no problem by going directly to it with the RDP client on port 3389. I do that from the outside world through an SSH tunnel.

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• Hostname problems in CentOS 5.5

  - by spoon16

  I just set up a CentOS 5.5 machine on my local network and attempted to modify the hostname by editing /etc/sysconfig/network file. When I'm logged in locally the change to the hostname is reflected and seems to be working fine. When I open a SSH session via PuTTY from Windows this is what I see at the prompt: [root@? ~]# cat /etc/sysconfig/network NETWORKING=yes NETWORKING_IPV6=yes HOSTNAME=mini.local [root@? ~]# sysctl kernel.hostname kernel.hostname = ? [root@? ~]# hostname ? [root@? ~]# hostname -f hostname: Unknown server error A couple of other symptoms that may be helpful in troubleshooting this problem. I can ping the CentOS box from my Windows machine via IP but not hostname. Also, my Netgear router does not display the hostname when I view the "Connected Devices", I do see the mac address and the proper IP listed though. How can I make it so that the hostname is properly propagated throughout my network?

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• Ubuntu server very slow out of the blue sky (Rails, passenger, nginx)

  - by snitko

  I run Ubuntu server 8.04 on Linode with multiple Rails apps under Passenger + nginx. Today I've noticed it takes quite a lot of time to load a page (5-10 secs). And it's not only websites, ssh seems to be affected too. Having no clue why this may be happening, I started to check different things. I checked how the log files are rotated, I checked if there's enough free disk space and memory. I also checked IO rate, here's the output: $ iostat avg-cpu: %user %nice %system %iowait %steal %idle 0.17 0.00 0.02 0.57 0.16 99.07 Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn xvda 2.25 39.50 16.08 147042 59856 xvdb 0.00 0.05 0.00 192 0 xvdc 2.20 25.93 24.93 96530 92808 xvdd 0.01 0.12 0.00 434 16 xvde 0.04 0.23 0.35 858 1304 xvdf 0.37 0.31 4.12 1162 15352 Rebooting didn't help either. Any ideas where should I be looking?

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• how to run an AFS file server on a specific ethernet card (in Debian)

  - by listboss

  I have a linux box running Debian server with minimal number of packages (so no GUI for network management). The box has two ethernet cards, one of which (eth0) is connected to a Mac OSX computer using a cross-cable. I can bring up eth0 and assign a static ip (10.10.11.16) to it. This way I can ssh to the box through the cross-cable. This is what I run on Linux box: ifconfig eth0 10.10.11.16 netmask 255.255.255.0 up I also installed/started a file server (AFS) on Debian. So far, the file server can only be accessed through eth1 which is exposed to my home LAN and www. My goal is to set up the file server so that it's only visible through eth0. Is this possible? and if yes, how can I do it?

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• How do I use a virtualbox guest machine as a gateway?

  - by Igor Zinov'yev

  I have a certain problem. I am working on an Ubuntu machine, but I have to use a windows 2003 server guest to connect to a Stonegate VPN to be able to manage our client's website. I have already asked if I could connect to a Stonegate VPN in Ubuntu, but so far got no answer. And I couldn't connect to it using network manager's strongswan plugin. So I want to use my guest Win2003 as a gateway to be able to SSH to the remote server. Is that possible? Thank you very much in advance, if this is possible in any way, it will save me a lot of trouble!

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• OpenVPN Bridge on pfsense: once LAN pings clients, connectivity breaks

  - by Lucas Kauffman

  So I'm using a pfsense openvpn to bridge my LAN segment so VPN users can access the servers. The problem I'm having now is that I can establish a connection, I can ping the LAN server from the VPN, but as soon as I ping the client from the LAN server, there is no connectivity anymore between both parties. So: connect from the VPN client to the LAN = works ping the LAN from the VPN client = works access server from the VPN (ssh, ftp,...) = works ping client from server = doesn't work ping LAN from the VPN client = doesn't work anymore My bridge has em1 and ovpns1 bridged. I noted with tcpdump that ICMP is reaching the bridge between LAN and the VPN segment. But it's not put onto the em1 interface for some reason. My pfsense is running on an ESXi host with th vSwitch port enabled in promiscious mode. Firewall rules allow in and outbound traffic regardless origin or destination.

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• Why are there tons of PHP processes open on my server?

  - by fiftyeight

  Today I saw that a website of mine isn't working so I ssh'd to the server and executed ps -eF. I see about 200 PHP processes that are running all for 4 hours. Apache is built with mpm event and mod fcgid. I killed all the PHP processes and now it's running fine, why does this happen? is this expected behavior? I don't really understand how processes how Apache keeps track of the number of PHP processes and their process IDs, so it would be nice if someone can also give some reference when I can read about this. Also, I used the "ab" command (Apache Benchmark) to see if this happens all the time, so I ran it about 4-5 times with 30 concurrent requests and again there are like 150 PHP processes running, when I keep running "ab" now it doesn't spawn more processes and the website is still working. Please shed some light on this! Thank you :)

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• SSL certificate: unable to get local issuer certificate

  - by celwell

  I'm running Debian (Lenny). When I run this: curl --ssl https://www.google.com I get this error: curl: (60) SSL certificate problem: unable to get local issuer certificate More details here: http://curl.haxx.se/docs/sslcerts.html curl performs SSL certificate verification by default, using a "bundle" of Certificate Authority (CA) public keys (CA certs). If the default bundle file isn't adequate, you can specify an alternate file using the --cacert option. If this HTTPS server uses a certificate signed by a CA represented in the bundle, the certificate verification probably failed due to a problem with the certificate (it might be expired, or the name might not match the domain name in the URL). If you'd like to turn off curl's verification of the certificate, use the -k (or --insecure) option.

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• firehol (firewall) with bridge: how to filter

  - by Leon

  I have two interfaces: eth0 (public address) and lxcbr0 with 10.0.3.1. I have a LXC guest running with ip 10.0.3.10 This is my firehol config: version 5 trusted_ips=`/usr/local/bin/strip_comments /etc/firehol/trusted_ips` trusted_servers=`/usr/local/bin/strip_comments /etc/firehol/trusted_servers` blacklist full `/usr/local/bin/strip_comments /etc/firehol/blacklist` interface lxcbr0 virtual policy return server "dhcp dns" accept router virtual2internet inface lxcbr0 outface eth0 masquerade route all accept interface any world protection strong #Outgoing these protocols are allowed to everywhere client "smtp pop3 dns ntp mysql icmp" accept #These (incoming) services are available to everyone server "http https smtp ftp imap imaps pop3 pop3s passiveftp" accept #Outgoing, these protocols are only allowed to known servers client "http https webcache ftp ssh pyzor razor" accept dst "${trusted_servers}" On my host I can connect only to "trusted servers" on port 80. In my guest I can connect to port 80 on every host. I assumed that firehol would block that. Is there something I can add/change so that my guest(s) inherit the rules of the eth0 interface?

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• PERC 5/i Enable alarm on disks failures

  - by Andy M

  I'm trying to enable one the alarm of my server's raid controller PERC 5/i. Using this documentation, under the chapter Audible Alarm Warnings, it's explained that enabling an audible alarm is allowed in order to quickly spot failures on my hard disks. My trouble is that when entering the disk controller configuration (Ctrl+R at boot time), I'm able to set up lot of things but I cannot navigate to Enable Audible Alarm. I have : Enable Controller BIOS Enable Alarm Enable BIOS stop on Error I can navigate with my arrow keys to both the first and third items, but I cannot navigate to or select the second! It's not greyed out, and seems like I should be able to select go on this entry, but my cursor keep skipping it. Any ideas about what I'm missing here?

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• Problems to connect Java visualVM to a EC2-instance

  - by kasten

  I'm trying to profile a AWS EC2 instance via visualVM. The instance is in a securitygroup which allows all connections and i'm runing jstatd with a grant codebase "file:${java.home}/../lib/tools.jar" { permission java.security.AllPermission; }; policy on it. When i try to connect from my local machine with visulVM nothing happens. When i use jps i get the following response $ jps -l -m -v rmi://ec2-xxx-xxx-xxx-xxx.compute-1.amazonaws.com Error communicating with remote host: Connection refused to host: xxx.xxx.xxx.xxx; nested exception is: java.net.ConnectException: Connection timed out But i can ssh into the instance and use jps locally. Has anyone a pointer in which direction i can debug further?

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• Steps to take when technical staff leave

  - by Tom O'Connor

  How do you handle the departure process when privileged or technical staff resign / get fired? Do you have a checklist of things to do to ensure the continuing operation / security of the company's infrastructure? I'm trying to come up with a nice canonical list of things that my colleagues should do when I leave (I resigned a week ago, so I've got a month to tidy up and GTFO). So far I've got: Escort them off the premises Delete their email Inbox (set all mail to forward to a catch-all) Delete their SSH keys on server(s) Delete their mysql user account(s) ... So, what's next. What have I forgotten to mention, or might be similarly useful? (endnote: Why is this off-topic? I'm a systems administrator, and this concerns continuing business security, this is definitely on-topic.)

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• How can I practice with a full set of characters in KTouch?

  - by Josh

  I originally used KTouch to learn Qwerty touch typing, but found it too stressful on the hands. Hearing about Dvorak, I decided I'd switch to that (still using a Qwerty keyboard, but with the keys mapped differently). Since the keyboard is physically displaying a Qwerty layout, I cannot look at the keyboard for hints, making it very hard to type characters that I am unfamiliar with. Unfortunately, KTouch only covers letters, not punctuation and other symbols. Where can I find a lecture that covers all, or most of, the characters on a keyboard?

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• OpenLDAP PAM authen does not support SSHA on FreeBSD10

  - by suker200

  OpenLDAP PAM authen does not support SSHA? Hi everyone, Now, I lost one day to figure out, the reason my FreeBSD10 can not authenticate SSH user via LDAP because pam_ldap and nss_ldap do not support SSHA password when OpenLDAP support SSHA method. I have checked /usr/local/etc/ldap.conf, they just have these pam_password methods: clear, crypt, nds, racf, ad, exop. So, If I switch to CRYPT, I can authenticate successfully. So, IMHO, I will be very appreciative for any point or suggestion from everyone to make my FreeBSD10 PAM support SSHA, is there any way or can not? Infor: Ldap Server (389 DS - Centos) - Ldap client (FreeBSD10) what I have got: authen via Ldap between Centos - Centos (Okie). Centos (Ldap Server) - FreeBSD failed (work if I using crypt) Thank and BR Suker200

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• Is there a VNC server for mac with decent international keyboard support?

  - by Stephan

  Hi, I'm having trouble finding a VNC server for Mac OS X that allows me to connect from a Windows box with German keyboard layout. I've tried the built-in desktop sharing and several versions of Vine but all of them had problems with several keys. Does maybe anyone know about a working combination of a Mac OS X VNC server and Windows VNC client which properly supports a German keyboard layout on the client? Update: I don't think the Windows client is the problem, because I have no issues connecting to Linux boxes. And I've tried several different clients.

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• using Linux vncviewer

  - by Darkoni

  Hi ! when i am connecting to VNC server using wine on linux $ wine vncviewer.exe i have to enter: VNC Server: 1.1.1.21 Proxy/Reapeter: 195.29.18.33:1234 and then, when i connect, on top there is txt: 1.1.1.21:5900 (195.29.18.33:1234) mine question is: how to connect using vncviewer ? what to put in VNC_VIA_CMD ? $ export xlocalPort=1234 $ export xremoteHost=1.1.1.21 $ export xremotePort=5900 $ export xgateway=195.29.18.33 $ export VNC_VIA_CMD="/usr/bin/ssh -f -L $xlocalPort:$xremoteHost:$xremotePort $xgateway sleep 20" $ vncviewer $xremoteHost -via $xgateway and i get error: unable connect to socket: Connection refused (111) i was trying to help myself with page http://www.tightvnc.com/vncviewer.1.php Please help, couse i need to use "native" linux vncviewer installed by $ yum install tigervnc tigervnc.i686 0:1.0.90-0.13.20100420svn4030.fc13 Thnx

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• iproute2 premptive route creation, i think....

  - by Bryan Hunt

  Firstly: I know could do this the easy way with SSH but I want to learn how to route. I want to route packets back through the same tun0 interface from which they came into my system. I can do it for single routes. This works: sudo ip route add 74.52.23.120 metric 2 via 10.8.0.1 But i'd have to add them manually for each request that came down the pipe I've taken the blue pill and followed the http://lartc.org/howto/lartc.netfilter.html: Netfilter & iproute - marking packets tutorial But it's oriented towards redirecting OUTGOING packets based upon markers What I want is for a packet that comes in via tun0 not to be dropped which is what's happening right now, running scappy or suchlike to receive packets it doesn't seem to be receiving anything. Watching in wireshark I see the initial SYN packets coming in on the tun0 interface but that's as far as it gets without a static route as shown above. Am I nuts?

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• How to clone and deploy multiple machines?

  - by Mimi

  Hi, See what I wanna do is basically make bootable clones or disc images or whatever(let's call it "stuff" for now ) and store many of them in a single big HDD. Then, I wanna use that big HDD and the "stuff" in it to be able to deploy new machines without the hassle of reinstalling Windows and whatnot(i.e. I do not want to restore nor simply clone a same machine, I literally want to use clones to save time during machine set up). Obviously I'd deploy the "stuff" onto an HDD going into a machine that I know the hardware of to avoid driver issues and whatnot. I alos have enough Windows keys to deal with the multiple activations. I tried using Acronis True Image but it doesn't seem to do what I want(unless idk how to use it properly). Any advice is welcome thanks :)

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• Export SSL Cert from IIS and import into GlassFish keystore

  - by Tim H

  What I need: I have an existing SSL certificate installed on IIS 6. On the same machine, I have GlassFish installed and would like to share the same certificate since they both share the same hostname, and they use different ports: IIS uses 443 and GlassFish uses 8181. Why I need it: Reuse existing SSL certs from IIS to GlassFish. I imagine that this is possible. I am able to install an SSL cert into GlassFish's keystore, and then import the same exact cert into IIS. I just want to go the other way - imagine having an SSL cert on IIS being used for months, and now I want to enable SSL on GlassFish. What I have done: Created a keystore with an alias: server.hostname.com Imported intermediate CA certs associated with the existing SSL Cert Imported the existing SSL cert with the same alias: server.hostname.com, but the keytool won’t allow this, as it is not associated: keytool error: java.lang.Exception: Public keys in reply and keystore don't match Why? Using a different alias causes the cert to not be trusted in the CA chain.

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• rc.local is not executed on bootup ubuntu

  - by Alexander

  Im on Ubuntu 10.04. I want to execute script on system boot. I added it to rc.local. If I execute rc.local manually it works fine. If I boot system in recovery mode(2nd string in boot menu) it also works fine. But if I boot normally it is not executed. However i added sleep 20 to my script and there is a pause at the end of boot process, but nothing more is executed. Thanks I think, it soesnt depend on contents of the script but anyway #!/bin/sh -e sleep 20 sudo service ssh start su -c 'service pgsql start' postgres sudo svnserve -d su -c 'hamachi start' root su -c 'hamachi login' root exit 0

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• Empty /var/log after running cron bash script

  - by Ortix92

  I wrote a little bash script and all of a sudden my /var/log folder is completely empty except for the log I created for the bash script. This is the script I'm running every hour with cron: #!/bin/bash STL_DIR=/path/to/some/folder/i/hid LOGFILE=/var/log/stl_upload.log now=`date` echo "----------Start of Transmission----------" 2>&1 | tee -a $LOGFILE echo "Starting transfer at $now" 2>&1 | tee -a $LOGFILE rsync -av -e ssh $STL_DIR [email protected]:/users/path/folder 2>&1 | tee -a $LOGFILE echo "----------End of transmission----------" 2>&1 | tee -a $LOGFILE printf "\n" 2>&1 | tee -a $LOGFILE I want to be clear that I'm not 100% certain this is related to the empty logs folder. So if anyone could give me a pointer as to what could be going on about the reason why my log folder is empty, that'd be great.

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• Resolve Wrong IP from Domain Name only on certain networks

  - by Godric Seer

  I host a personal website on an old desktop that is LAMP based. There are several strange things about this problem so I will break it down into steps. Since I have a dynamic IP, I use no-ip to make sure I have a working domain name at all times. I use the automatic update client, but logged in and checked and my no-ip domain has the proper IP tied to it. Here is a link to the homepage through the no-ip domain for reference. Also, I do a ping and a traceroute on the no-ip domain and get: [eckertzs@localhost ~]$ ping -c 1 endradil.noip.me PING endradil.noip.me (65.24.215.99) 56(84) bytes of data. 64 bytes from endradil.noip.me (65.24.215.99): icmp_seq=1 ttl=64 time=2.23 ms --- endradil.noip.me ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 104ms rtt min/avg/max/mdev = 2.233/2.233/2.233/0.000 ms [eckertzs@localhost ~]$ traceroute endradil.noip.me traceroute to endradil.noip.me (65.24.215.99), 30 hops max, 60 byte packets 1 . (192.168.2.1) 1.755 ms 5.409 ms 5.380 ms 2 endradil.noip.me (65.24.215.99) 6.297 ms 9.543 ms 10.324 ms Using this domain, I can connect to my webserver without issue or interruption(the https is required to avoid a redirect serverside, but it works). I also have a domain I have bought on GoDaddy where I have a CNAME record forwarding the www subdomain to my no-ip domain. CNAME Record Host: www Points to: endradil.noip.me TTL: 1 hour For the past several weeks, I never had an issue using the GoDaddy domain to connect (ssh or https). As of the past few days, however, the GoDaddy domain has only worked intermittently, for a few minutes at a time and then will go down for hours at a time. I get server not found errors most of the time. Also, if I happen to be using the GoDaddy domain for an ssh connection, the connection will freeze. I have run online tests of the DNS and have seen that the website is visible by external servers and resolved to the correct IP. I also contacted GoDaddy support but they had no issues connecting to the website, and therefore did not see any issues. My personal computers (Windows desktop, linux laptop, android phone) all fail to connect when on my personal wifi. If I disconnect my phone from the wifi and use my AT&T wireless data, it can connect with both domains without issue. When I attempt to use Google webmaster tools to crawl the site using the GoDaddy domain, Google can not find the site. From my linux laptop, I have found some interesting results when I ping or traceroute the domain. The results from these: [eckertzs@localhost ~]$ ping -c 1 www.endradil.com PING www.endradil.com.Belkin (198.105.244.228) 56(84) bytes of data. --- www.endradil.com.Belkin ping statistics --- 1 packets transmitted, 0 received, 100% packet loss, time 10000ms [eckertzs@localhost ~]$ traceroute www.endradil.com traceroute to www.endradil.com (198.105.244.228), 30 hops max, 60 byte packets 1 . (192.168.2.1) 1.918 ms 2.806 ms 2.772 ms 2 cpe-65-24-208-1.insight.res.rr.com (65.24.208.1) 29.247 ms 29.654 ms 30.094 ms 3 cpe-69-23-24-117.new.res.rr.com (69.23.24.117) 15.597 ms 23.218 ms 23.581 ms 4 agg24.clmcohib01r.midwest.rr.com (65.29.1.52) 30.581 ms 30.556 ms 31.192 ms 5 be27.clevohek01r.midwest.rr.com (65.29.1.38) 30.580 ms 31.062 ms 31.038 ms 6 bu-ether25.atlngamq47w-bcr01.tbone.rr.com (107.14.19.38) 37.863 ms 68.844 ms 43.773 ms 7 107.14.17.178 (107.14.17.178) 51.866 ms 51.019 ms 50.989 ms 8 ae0.pr1.dca10.tbone.rr.com (107.14.17.200) 48.467 ms ae-4-0.a0.lax91.tbone.rr.com (66.109.1.113) 49.912 ms * 9 v413.core1.ash1.he.net (209.51.175.33) 60.270 ms 50.842 ms 50.819 ms 10 100ge5-1.core1.nyc4.he.net (184.105.223.166) 55.597 ms 56.045 ms 56.020 ms 11 xerocole-inc.10gigabitethernet12-4.core1.nyc4.he.net (216.66.41.242) 56.001 ms 55.969 ms 55.992 ms 12 * * * both show the incorrect IP. Also, the traceroute timesout on hops 12 through 255 (output truncated above). The traceroute using site24x7 works and shows reasonable results when run from their california server. From another linux box on a different network but in the same city as me (10 miles away), I still get timeout for traceroute, however the IP resolves correctly for the domain. From this I believe that the DNS result is incorrectly cached in either my router/modem or perhaps even at my ISP level. My question is, first, how do I find out exactly what is wrong, and second, how do I resolve it.

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• How to FTP via CLI? [closed]

  - by Ryan

  So I have a Debian machine and I want to transfer data on here to a Windows based FTP account. I've managed to open up firewalling for outbound FTP on the Debian source, but have never used FTP via CLI before. Does anyone know how I can go about transferring data? I am starting to get really confused with what to transfer from where. If I ssh to the Debian machine and then connect to the Windows FTP account, then try put and get commands, it never seems to recognise the path of the source files on the Debian machine.

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• centos: su silently fails

  - by matteo

  On a CentOS server where I'm logged via SSH as root, I do: su otherusername where 'otherusername' is the user name of another user, which exists. It does nothing. After that, I'm still root. whoami returns root, any file I create belongs to root, that is, su just doesn't su. However it does not give any error message. If I try to su with an invalid user name it does give an error message. What am I missing??

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• rsync bash script to backup specific directories nightly to remote server

  - by Janice Young

  Hello, I am looking for a rsync script that will backup specific directories from my home machine to a remote server nightly. So say: /home/me/Pictures to ssh -p 6587 [email protected]/Pictures. It would be nice if it can look for changes but im not worried so much about the changes aspect is having a script that runs at a certain time of night with cron or however. I have googled and found scripts but those scripts were specific to the operations of those creators. Any help would be happily accepted as the scripted part really throws me off. Thank you, Janice

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