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• How to Load Balance 2 Internet Connections on a Windows 7 machine?

  - by Jimmy Chandra

  It's sort of related to this particular question, but that one is on Mac. I am looking for similar solution on Windows 7. I have 2 network connections: (Connection A) Wireless terminal connecting to ISP A (3G / EVDO internet provider) (Connection B) Broadband wired connection connecting to ISP B (Cable internet provider) Both has access to the internet. When I try connecting to a website and checking the networking tab on my Task Manager, I only see the network traffic being routed to only Connection A. Is there a way to make the computer to utilize both network (in a sense using all the bandwidth available from both the Cable ISP and the 3G / EVDO ISP) at the same time? If so, what do I need to do to set this up ... on Windows 7? Here is a bit more info on my network connections (ipconfig /all): PPP adapter Wireless Terminal: IPv4: aa.bb.ccc.ddd(preferred) Subnet mask: 255.255.255.255 Default Gateway: 0.0.0.0 DNS: aa.ee.f.ggg aa.ee.f.hhh Primary Wins: jjj.ii.k.l Secondary Wins: jjj.ii.k.m Ethernet adapter LAN: IPv4: 192.168.1.100 (connected to a router by wired that itself connect to a cable modem) subnet mask: 255.255.255.0 Default gateway: 192.168.1.1 (the wireless router) DHCP: 192.168.1.1 (the wireless router) DNS: xxx.yy.zz.ww rr.sss.t.uuu For my own privacy, I don't believe the actual number matters, the patterns are representative of the ip numbering scheme...

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• HOW TO save Contacts from iPhone to Computer?

  - by goodm

  Step 1: Download [b]Tansee iPhone Transfer Contact[/b] free trial version [url="http://softseeking.com/prodail.aspx?proid=47"]here[/url],then install the software (skip if done yet). u can download at:[url="http://www.softseeking.com/prodail.aspx?proid=47"]http://www.softseeking.com/prodail.aspx?proid=47[/url] Step 2: Connect iPhone to your computer. Step 3: Run Tansee iPhone Transfer Contact , your contacts on iPhone memory will display as shown in your iPhone screen automatically as fig 1. Click on single name, all his or her information will display as fig 2 shown. Step 4-a: In fig 1 situation, you can click button "Copy" to copy all contacts from your iPhone to your computer , then select options: 1: Choose File Type: backup to TXT file, ANTC file or CSV file; 2: Choose File Path: You can change the backup path if you do not use default path. 3: Advanced Option: if you choose ANTC format in step 1, you can add a password to protect the file. Note: We do not know the password, so please do remember it. Click OK Button to finish the Copy. See fig 3. Note: You can only copy the first 5 contacts with trail version.[/SIZE] [/SIZE] [size=3][size=3]Step 4-b: In fig 2 situation, click button "Copy Contact From who" to copy contact of a single person, select options: 1: Choose File Type: Backup contacts to TXT file, and CSV file in single contact transfer; 2: Choose File Path: You can change the backup path if you do not use default path; 3: Advanced Option: Disabled in single contact transfer. Click OK Button to finish the Copy. See fig 4. Note: You can only copy the first 5 contacts in trail version.[/size] [/size]

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• Unattended Kickstart Install

  - by Eric

  I've looked around quite a bit and have seen similar setup and questions, but none seem to work for me. I'm using the following command to create a custom ISO: /usr/bin/livecd-creator --config=/usr/share/livecd-tools/test.ks --fslabel=TestAppliance --cache=/var/cache/live This works great and it creates the ISO with all of the packages and configs I want on it. My issue is that I want the install to be unattended. However, every time I start the CD, it asks for all of the info such as keyboard, time zone, root password, etc. These are my basic settings I have in my kickstart script prior to the packages section. cdrom install autopart autostep xconfig --startxonboot rootpw testpassword lang en_US.UTF-8 keyboard us timezone --utc America/New_York auth --useshadow --enablemd5 selinux --disabled services --enabled=iptables,rsyslog,sshd,ntpd,NetworkManager,network --disabled=sendmail,cups,firstboot,ip6tables clearpart --all So after looking around, I was told that I need to modify my isolinux.cfg file to either do "ks=http://X.X.X.X/location/to/test.ks" or "ks=cdrom:/test.ks". I've tried both methods and it still forces me to go through the install process. When I tail the apache logs on the server, I see that the ISO never even tries to get the file. Below are the exact syntax I'm trying on my isolinux.cfg file. label http menu label HTTP kernel vmlinuz0 append initrd=initrd0.img ks=http://192.168.56.101/files/test.ks ksdevice=eth0 label localks menu label LocalKS kernel vmlinuz0 append initrd=initrd0.img ks=cdrom:/test.ks label install0 menu label Install kernel vmlinuz0 append initrd=initrd0.img root=live:CDLABEL=PerimeterAppliance rootfstype=auto ro liveimg liveinst noswap rd_NO_LUKS rd_NO_MD rd_NO_DM menu default EOF_boot_menu The first 2 give me a "dracut: fatal: no or empty root=" error until I give it a root= option and then it just skips the kickstart completely. The last one is my default option that works fine, but just requires a lot of user input. Any help would be greatly appreciated.

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• iperf max udp multicast performance peaking at 10Mbit/s?

  - by Tom Frey

  I'm trying to test UDP multicast throughput via iperf but it seems like it's not sending more than 10Mbit/s from my dev machine: C:\> iperf -c 224.0.166.111 -u -T 1 -t 100 -i 1 -b 1000000000 ------------------------------------------------------------ Client connecting to 224.0.166.111, UDP port 5001 Sending 1470 byte datagrams Setting multicast TTL to 1 UDP buffer size: 8.00 KByte (default) ------------------------------------------------------------ [156] local 192.168.1.99 port 49693 connected with 224.0.166.111 port 5001 [ ID] Interval Transfer Bandwidth [156] 0.0- 1.0 sec 1.22 MBytes 10.2 Mbits/sec [156] 1.0- 2.0 sec 1.14 MBytes 9.57 Mbits/sec [156] 2.0- 3.0 sec 1.14 MBytes 9.55 Mbits/sec [156] 3.0- 4.0 sec 1.14 MBytes 9.56 Mbits/sec [156] 4.0- 5.0 sec 1.14 MBytes 9.56 Mbits/sec [156] 5.0- 6.0 sec 1.15 MBytes 9.62 Mbits/sec [156] 6.0- 7.0 sec 1.14 MBytes 9.53 Mbits/sec When I run it on another server, I'm getting ~80Mbit/s which is quite a bit better but still not anywhere near the 1Gbps limits that I should be getting? C:\> iperf -c 224.0.166.111 -u -T 1 -t 100 -i 1 -b 1000000000 ------------------------------------------------------------ Client connecting to 224.0.166.111, UDP port 5001 Sending 1470 byte datagrams Setting multicast TTL to 1 UDP buffer size: 8.00 KByte (default) ------------------------------------------------------------ [180] local 10.0.101.102 port 51559 connected with 224.0.166.111 port 5001 [ ID] Interval Transfer Bandwidth [180] 0.0- 1.0 sec 8.60 MBytes 72.1 Mbits/sec [180] 1.0- 2.0 sec 8.73 MBytes 73.2 Mbits/sec [180] 2.0- 3.0 sec 8.76 MBytes 73.5 Mbits/sec [180] 3.0- 4.0 sec 9.58 MBytes 80.3 Mbits/sec [180] 4.0- 5.0 sec 9.95 MBytes 83.4 Mbits/sec [180] 5.0- 6.0 sec 10.5 MBytes 87.9 Mbits/sec [180] 6.0- 7.0 sec 10.9 MBytes 91.1 Mbits/sec [180] 7.0- 8.0 sec 11.2 MBytes 94.0 Mbits/sec Anybody has any idea why this is not achieving close to link limits (1Gbps)? Thanks, Tom

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• How to cache authentication in Linux using PAM/Kerberos authentication (for CVS)?

  - by Calonthar

  We have several Linux servers that authenticate Linux user passwords on our Windows Active Directory Server using PAM and Kerberos 5. The Linux distro we use is CentOS 6. On one system, we have several Version Control Systems like CVS and Subversion, both of which authenticate users throug PAM, such that users can use their normal Unix resp. Windows AD accounts. Since we started using Kerberos for password authentication, we experienced that CVS on a client machine is often much slower in establishing a connection. CVS authenticates the user on every request (eg. cvs diff, log, update...). Is is possible to cache the credentials that kerberos uses, sucht that is does not need to ask the Windows AD server every time a user executes a cvs action? Our PAM config /etc/pam.d/system-auth looks like the following: auth required pam_env.so auth sufficient pam_unix.so nullok try_first_pass auth requisite pam_succeed_if.so uid >= 500 quiet auth sufficient pam_krb5.so use_first_pass auth required pam_deny.so account required pam_unix.so broken_shadow account sufficient pam_succeed_if.so uid < 500 quiet account [default=bad success=ok user_unknown=ignore] pam_krb5.so account required pam_permit.so password requisite pam_cracklib.so try_first_pass retry=3 password sufficient pam_unix.so md5 shadow nullok try_first_pass use_authtok password sufficient pam_krb5.so use_authtok password required pam_deny.so session optional pam_keyinit.so revoke session required pam_limits.so session [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid session required pam_unix.so session optional pam_krb5.so

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• Ruby on Rails cannot find Initializer?

  - by Ryan M.

  Hello, I am trying to deploy an app to a fresh Ubuntu 10 installation using Passenger 2.2.15, Rails 2.3.5, Ruby 1.8.7, and Apache 2.2.14. However, even with a default rails app (sudo rails defaultapp), I am receiving the following error: "no such file to load -- initializer". I'm not sure which files you might need copies of in order to diagnose this problem, so I'll copy a few here and hope that it will help. Thanks for any help you can provide. -RM /etc/apache2/sites-available/default <VirtualHost *:80> ServerAdmin webmaster@localhost DocumentRoot /var/www/appname/public <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory /var/www/> Options Indexes FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all </Directory> ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> AllowOverride None Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Allow from all </Directory> ErrorLog /var/log/apache2/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog /var/log/apache2/access.log combined Alias /doc/ "/usr/share/doc/" <Directory "/usr/share/doc/"> Options Indexes MultiViews FollowSymLinks AllowOverride None Order deny,allow Deny from all Allow from 127.0.0.0/255.0.0.0 ::1/128 </Directory> </VirtualHost> /etc/apache2/mods-available/passenger.conf <IfModule passenger_module> PassengerRoot /usr/lib/ruby/gems/1.8/gems/passenger-2.2.15 PassengerRuby /usr/bin/ruby1.8 </IfModule> /etc/apache2/mods-available/passenger.load LoadModule passenger_module /usr/lib/ruby/gems/1.8/gems/passenger-2.2.15/ext/apache2/mod_passenger.so

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• network will not work properly after having run TCP optimizer, but safe mode settings work perfectly. how to restore?

  - by michele

  I was experiencing some issues with my connection while playing online and I tried to optimize it by running TCP optimizer on my PC (Windows 7 64bit professional). I thought maybe the situation could improve. but it didn't. actually, I now get an extremely slow page loading time, probably due to a very low RWIN value of 1024. I understand that Windows 7 has a system to automatically adjust the RWIN value when needed. The setting from netsh is "normal" so I guess something else must be wrong. I tried every automatic tool out there to restore Windows' default values, but I had no success. I currently have what should be labeled as "default values" for everything TCP Optimizer initially changed, but the problem persists. The thing is, I just found out that running Windows in safe mode SOLVES the problem completely. The problem is that as soon as I reboot, I get the same issue all over again. So my question is: is there a way to use SAFE MODE network settings in NORMAL mode?

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• SQL Error (1064) when importing data from SQL file

  - by mejpark

  I have a MySQL database, which was originally set up with the default latin1 character set and latin1_swedish_ci collation. I was using the database like this for sometime, until I noticed strange characters on my production web site, which is powered by a database exported from my development machine. At this point, I changed the default character set of the database and tables to utf8 and the collation to utf8_unicode_ci, converted the latin1 data inside each table to utf8 (using the 'convert data' option) and exported the database as a single SQL file using HeidiSQL. When the resulting SQL file is opened in Notepad++, several characters are rendered incorrectly. For example, en dashes (-) are displayed as – and e with accent (é) are displayed as é. I changed the encoding of the file from ANSI to UTF-8 (using the encoding menu option in Notepad++) and the offending characters are rendered correctly. I saved the new utf8-encoded SQL file and attempted to import the contents into the MySQL database on my production server. The import process fails with following error: /* SQL Error (1064): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '?# -------------------------------------------------------- # Host: ' at line 1 */ /* Error with snippets directory: The specified path was not found */ The head of the SQL file: # -------------------------------------------------------- # Host: 127.0.0.1 # Server version: 5.1.33-community # Server OS: Win32 # HeidiSQL version: 6.0.0.3773 # Date/time: 2011-04-20 09:48:36 # -------------------------------------------------------- It chokes on the first line of the file, which is commented out. Why is this happening? I didn't have a problem loading data from SQL files until I changed the character set and collation of the database. I came up with an ugly workaround to this problem by performing following steps: Export database as single SQL file using HeidiSQL Open resulting file in Notepad++ and convert from ANSI to UTF-8 encoding Create new empty file in Notepad++, paste in UTF-8 and save file normally What am I missing here?

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• few basic questions on webhosting (namservers & dns records)

  - by claws

  I bought a domain name on name.com & I want to use free webhosting on 110mb.com By default name.com integrates services of Google apps. Name server entries are ns1.name.com ns2.name.com ns3.name.com ns4.name.com When I registered on 110mb.com it gave me two addresses ns1.110mb.com ns2.110mb.com This is where I'm lost. The concept is that "Domain name should point to an address of the server where the website is hosted" right? Then why are these 4 entires by default. How exactly is it working? should I remove these 4 and then add 110mb.com servers or just append 110mb.com server addresses to name.com ones. I would like to use google apps. If I change these name server addresses would that remove google apps? I especially want to use email service of google. And I really don't understand what is CNAME, MX, or something something. I want to learn about these stuff & how it exactly works. When I search for webhost tutorial. I'm unable to find any fruitful results.

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• Linux VLAN Bridge

  - by raspi

  I have home network with VLANs, one for LAN, one for WLAN and one for internet. I'd like to use bridging so that instead of configuring these same VLANs to every machine, they had own VLAN ID and bridges were LAN, WLAN and internet. I've tried it but for some reason keep-alive/ttl seems to get broken because SSH sessions etc suddenly disconnects. We have this same setup working in workplace for 4+ years with 100+ customers but it's custom firewall/router hardware so accessing it is impossible. I know that it runs Linux. So what is Debian/Ubuntu default network settings doing wrong or is it just NIC driver/hw problem? I've tried to mess araund with ttl etc settings without any luck. The bad stuff is happening in the bridge because current VLAN-only setup works fine. interfaces: auto lo iface lo inet loopback # The primary network interface allow-hotplug eth0 allow-hotplug eth1 iface eth0 inet static iface eth1 inet static auto vlan111 auto vlan222 auto vlan333 auto vlan444 auto br0 auto br1 auto br2 # LAN iface vlan111 inet static vlan_raw_device eth0 # WLAN iface vlan222 inet static vlan_raw_device eth0 # ADSL Modem iface vlan333 inet static vlan_raw_device eth1 # Internet iface vlan444 inet static vlan_raw_device eth0 # LAN bridge iface br0 inet static address 192.168.0.1 netmask 255.255.255.0 bridge_ports eth0.111 bridge_stp on # Internet bridge iface br1 inet static address x.x.x.x netmask x.x.x.x gateway x.x.x.x bridge_ports eth1.333 eth0.444 bridge_stp on post-up iptables -t nat -A POSTROUTING -o br1 -j MASQUERADE pre-down iptables -t nat -D POSTROUTING -o br1 -j MASQUERADE # WLAN bridge iface br2 inet static address 192.168.1.1 netmask 255.255.255.0 bridge_ports eth0.222 bridge_stp on Sysctl: net.ipv4.conf.default.forwarding=1

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• issue in installing postgresql 9.3.4 on Windows server 2003 x64

  - by randydom

  Hello i really did all what i know to install the PostgreSQL 9.3.4 on my windows 2003 server x64, but i'm always stopped with this error : please see the error : http://oi57.tinypic.com/s4tb8i.jpg I really don't know what to do , if i click OK then when i go to the windows services list i don't find the PostgreSQL service so i can't Start the service . can any one please help me to install it correctly . PS: i've followed all steps in the : wiki.postgresql.org/wiki/Troubleshooting_Installation many thanks . here's the installer log * where i get " Failed to initialise the database cluster with initdb " : Called IsVistaOrNewer()... 'winmgmts' object initialized... Version:5.2 MajorVersion:5 Ensuring we can write to the data directory (using cacls): Executing batch file 'rad22ADE.bat'... processed dir: C:\Program Files\PostgreSQL\9.2\data Executing batch file 'rad22ADE.bat'... The files belonging to this database system will be owned by user "Administrator". This user must also own the server process. The database cluster will be initialized with locale "English_United States.1252". The default text search configuration will be set to "english". fixing permissions on existing directory C:/Program Files/PostgreSQL/9.2/data ... initdb: could not change permissions of directory "C:/Program Files/PostgreSQL/9.2/data": Permission denied Called Die(Failed to initialise the database cluster with initdb)... Failed to initialise the database cluster with initdb Script stderr: Program ended with an error exit code Error running cscript //NoLogo "C:\Program Files\PostgreSQL\9.2/installer/server/initcluster.vbs" "NT AUTHORITY\NetworkService" "postgres" "****" "C:\Program Files\PostgreSQL\9.2" "C:\Program Files\PostgreSQL\9.2\data" 5432 "DEFAULT" 0 : Program ended with an error exit code Problem running post-install step. Installation may not complete correctly The database cluster initialisation failed. Creating Uninstaller Creating uninstaller 25% Creating uninstaller 50% Creating uninstaller 75% Creating uninstaller 100% Installation completed Log finished 05/02/2014 at 04:04:04

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• MacOS creates a new mount on AFP path calls

  - by jAndy

  Hi Folks, following scenario: In my webapp, my customers are using Firefox as target browser. They have the need to open afp:// folders via Javascript. To make a long story short, this really works. You need to setup Firefox with about:config and set the value network.protocol-handler.external.afp to true. What happens then, the operating system (OSX) takes care of that path and it correctly opens a Finder window. The problem: OSX does create a new mount every time. It cannot distinct between afp://host/path/111 and afp://host/path/222 for instance. Furthermore, even if the afp path is 100% identical a new mount is created. It looks like this is the default behavior from OSX regardless of Firefox. So, is there any chance I can tell OSX not to create a new mount for some sub directorys which should get access over afp:// ? update: It looks like, there are OSX applications which can change the default behavior for network protocols. So you can change "somewhere" which application OSX should call for a protocol. If that is true, wouldn't it be possible to create a script which just opens the local path without a afp:// prefix ? The question here is, where is that configuration (?) to tell OSX which application to use for specific protocol. Any help welcome!

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• "Enter/Return" Key with Word Mobile on Windows Mobile

  - by Maarx

  Some of our employees are using PDAs running Windows Mobile. I wish I could provide more data regarding versions, but frankly these things aren't my jurisdiction. Someone's simply come to me looking for what they thought would be a quick fix. They're using Word Mobile and the barcode scanner to record large volumes of data. The scanner's default action is to insert the scanned text exactly as if it had been input with the keyboard, and puts a newline at the end. That's great, because it's exactly what we need it to do: separate data with newlines. The issue comes when system can't read the barcode, and the employee has to type in the data by hand. They've discovered a very peculiar quirk of Mobile applications: pressing the hardware Enter/Return key on the keyboard appears to save and exit the application. How do we change this behavior? They've realized that using the stylus to "click" the virtual on-screen keyboard's Enter/Return key will add the necessary newline, but it's a huge inconvenience for them. How do I fix the default behavior of the Enter/Return key for Word Mobile to instead insert a newline?

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• Replicate From OpenDJ to OpenLDAP?

  - by Joel K

  I am considering retiring some of our older OpenDJ LDAP servers and replacing with OpenLDAP. (seems to be more widely supported) I am wondering if it's possible to replicate directly from OpenDJ to OpenLDAP as an interim solution to remove the OpenDJ slaves and then flip the master over later. Is LDAP replication implementation specific or more general? I guess I'll have to just go give it a try, but I was looking for advice from someone who's been down this road.

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• How to test nginx proxy timeouts

  - by mkorszun

  Target: I would like to test all Nginx proxy timeout parameters in very simple scenario. My first approach was to create really simple HTTP server and put some timeouts: Between listen and accept to test proxy_connect_timeout Between accept and read to test proxy_send_timeout Between read and send to test proxy_read_timeout Test: 1) Server code (python): import socket import os import time import threading def http_resp(conn): conn.send("HTTP/1.1 200 OK\r\n") conn.send("Content-Length: 0\r\n") conn.send("Content-Type: text/xml\r\n\r\n\r\n") def do(conn, addr): print 'Connected by', addr print 'Sleeping before reading data...' time.sleep(0) # Set to test proxy_send_timeout data = conn.recv(1024) print 'Sleeping before sending data...' time.sleep(0) # Set to test proxy_read_timeout http_resp(conn) print 'End of data stream, closing connection' conn.close() def main(): s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) s.bind(('', int(os.environ['PORT']))) s.listen(1) print 'Sleeping before accept...' time.sleep(130) # Set to test proxy_connect_timeout while 1: conn, addr = s.accept() t = threading.Thread(target=do, args=(conn, addr)) t.start() if __name__ == "__main__": main() 2) Nginx configuration: I have extended Nginx default configuration by setting explicitly proxy_connect_timeout and adding proxy_pass pointing to my local HTTP server: location / { proxy_pass http://localhost:8888; proxy_connect_timeout 200; } 3) Observation: proxy_connect_timeout - Even though setting it to 200s and sleeping only 130s between listen and accept Nginx returns 504 after ~60s which might be because of the default proxy_read_timeout value. I do not understand how proxy_read_timeout could affect connection at so early stage (before accept). I would expect 200 here. Please explain! proxy_send_timeout - I am not sure if my approach to test proxy_send_timeout is correct - i think i still do not understand this parameter correctly. After all, delay between accept and read does not force proxy_send_timeout. proxy_read_timeout - it seems to be pretty straightforward. Setting delay between read and write does the job. So I guess my assumptions are wrong and probably I do not understand proxy_connect and proxy_send timeouts properly. Can some explain them to me using above test if possible (or modifying if required).

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• Why does Google Chrome ignore "last_known_google_url" property in "Local State" file?

  - by Peter Sivák

  I want to force my Google Chrome web browser (version 21.0.1180.89, 64-bit) to use non-localized search (thus google in english) through address bar, using the default Google search engine. To achieve that, I have to change value of the property last_known_google_url to https://www.google.com/?hl=en& in Local State file (for instance on Linux, the full path to the file is ~/.config/google-chrome/Local State). In that file, there should be the property: "browser": { "last_known_google_url": but it is not. Even if I add there the property, it has no impact on search - Google Chrome does not use the property and still searches in localized version. Another option is to put the property to Preferences file (for instance on Linux, the full path to the file is ~/.config/google-chrome/Default/Preferences) - which works perfectly when I start Google Chrome and do some search - but just after that, the property (actually the whole Preferences file) is overriden, so "the most important" trailing part ?hl=en& of the property value is removed - and without it, the non-localized search does not work anymore. Why does Google Chrome ignore last_known_google_url property in Local State file?

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• Apache LimitExcept not behaving as expected

  - by Farseeker

  I have the following directive in my Apache httpd.conf: <LimitExcept OPTIONS PROPFIND REPORT> deny from all </LimitExcept> OPTIONS and PROPFIND work as expected, but REPORT returns 400: Bad Request. Removing the LimitExcept alltogether and everything works as expected. Any ideas on why this might be? (This is the implementation of my question here).

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• What are the two top reasons Macs do not get viruses/worms/trojans?

  - by chaddjohnson

  I ask in seriousness. Please do not post answers like, "because Windows sucks!" or I will down-rate you. Why do Macs pretty much never get viruses/worms/trojans? Is one reason the rwx permission implementation, where that I must explicitly grant a program execute permission to run? What would be another reason?

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• SeLinux blocking connection to sshd on Ubuntu 9.10

  - by Barton Chittenden

  When I try to log on to my laptop, which runs Ubuntu 9.10, the server rejects my login attempts. Checking /var/log/auth.log, I see the following: Feb 14 12:41:16 tiger-laptop sshd[6798]: error: ssh_selinux_getctxbyname: Failed to get default SELinux security context for tiger I googled for this, and ran across the following: http://www.spinics.net/lists/fedora-.../msg13049.html Here's the part that I think relates to the problem that I'm having: Quote: What's wrong on my system? Why it's not possible to login even if selinux is in permissive mode? Any suggestions? I'd start by trying to figure out why sshd isn't running in sshd_t (it seems to be running in sysadm_t). Paul. selinux mailing list selinux@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mail...stinfo/selinux Yes, sshd is running in sysadm_t: ps axZ | grep sshd system_u:system_r:sysadm_t 3632 ? Ss 0:00 /usr/sbin/sshd -o PidFile=/var/run/sshd.init.pi ls -Z /usr/sbin/sshd system_ubject_r:sshd_exec_t /usr/sbin/sshd Don't know why it's not sshd_t. I didn't modified something. It's a standard installation of sles11 with the default reference policy from tresys. Maybe this code snippet from policy/modules/services/ssh.te is responsible for that: Allow ssh logins as sysadm_r:sysadm_t gen_tunable(ssh_sysadm_login, true) Any ideas? Do you have boolean init_upstart set to on? if not try setting it to on. I do not believe ssh_sysadm_login boolean works currently but i may be mistaken. -- Yeah, setting init_upstart to on did the trick! THANK A LOT! Do you know why this prevents the user from logging in through ssh even if selinux is set to permissive?? Ok, so the million dollar question is "where do I set 'init_upstart=1'"? It's not clear from context which configuration file needs to be edited, and I'm not at all familiar with SELinux configuration.

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• Network speed between a VM and another machine which is not residing on the same host, is 11MB/s at most

  - by Henno

  Problem Network speed between a VM and another machine which is not residing on the same host, is 11MB/s at most. Topology Facts ESXi5 version is 5.0.0.504890 VM has the latest Vmware Tools installed VM is using E1000 network driver Physical box has Win Srv 2008 R2 as the OS CrystalDiskMark says the drive on physical box can read/write 100MB/s vCenter is another vm on esx both vm and physical box are showing 1Gbps link speed Configuration Networking shows vmnic0 as 1000 Full NTttcp is a client/server tool from Microsoft for measuring pure network throughput Here's what I've done so far: Test1: VM is running Filezilla FTP Server (default settings, one user account made) Physical box is running Filezilla FTP Client (default settings) Physical box is uploading a big file to FTP server Transfer speed (as observed by Windows Task Manager on both machines): ~11MB/s (bad) Physical box is downloading that file from FTP server Transfer speed (as observed by Windows Task Manager on both machines): still ~11MB/s (bad) Could it be disk performance issue? Test2: Physical box is running ntttcpr.exe -a 6 -m 6,0,VM_IP_ADDRESS VM is running ntttcps.exe -a 6 -m 6,0,PHY_BOX_IP_ADDRESS Transfer speed (as observed by Windows Task Manager on both machines): ~11MB/s (bad) Could it be switch performance issue? Test3: physical box is running vSphere Client I open Summary Storage datastore Browse Datastore... from physical box and upload a file to datastore Transfer speed (as observed by Windows Task Manager on physical box): ~26-36MB/s (good) Could it be a vm specific issue? Test4: Installed ntttcp to another vm on the same esx server Measured network performance between vms on the same esx server with NTttcp Transfer speed (as observed by Windows Task Manager on physical box): ~90-120MB/s (excellent :) Test5: I have another esx server on the same site, connecting to the same datastore and same switch. Those two ESX servers have both 2 NICs. One NIC goes to switch while the other goes directly to the other ESX server. vMotioned one of the testing vms off to the other ESX host Measured network performance between vms on different esx servers with NTttcp Transfer speed (as observed by Windows Task Manager on physical box): ~11MB/s (bad) While I'm aware of these: ESXi 4.1 slow file transfer ESXi 5 network performance is slow Debian Etch and ESXi slow network speeds VMWare ESXi slow file copy to guest they did not help (or I must have been missed something)

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• How to play 24 fps video smoothly on a 60Hz display?

  - by netvope

  I use mpc-hc to play videos on Win7 x64. With the default settings (#1), video playback is great most of the time. But for panning shots, playback is not smooth. I stepped through the video frame by frame and found that the panning movement is smooth (e.g. each frame shifts horizontally by 10 pixels), so the problem is how the 23.976 fps video is interpolated to 60Hz. The judder looks like what would be caused by a "2:3 pulldown", where the frames are played unevenly like: frame 1, 1, 2, 2, 2, 3, 3, 4, 4, 4, etc (#2) Using "optimal renderer settings" (#3) instead of the default disables the Aero theme and causes tearing. Setting my LCD display to 50Hz may have improved the judder slightly (but I can't really tell). My display does not support 24Hz or 48Hz, and forcing them in the Nvidia control panel gives blurry screen. I've tried other video players (VLC and KMPlayer), the ReClock Directshow Filter, video files from different sources (#4), turning on/off DXVA, and a computer with a different GPU, but the judder in the playback is similar. None of them solved the problem. So, how can I play 23.976 or 24 fps video smoothly on a 60Hz display? I think a video player could make the video smoother by doing linear interpolation, such as: 1. 100% frame 1 2. 60% frame 1 + 40% frame 2 3. 20% frame 1 + 80% frame 2 4. 80% frame 2 + 20% frame 3 5. 40% frame 2 + 60% frame 3 6. 100% frame 3 7. 60% frame 3 + 40% frame 4 .. etc Can any existing video player do this? Footnotes: (#1) Video renderer: EVR Custom Pres. (#2) This example converts a 24 fps video into 30 fps (#3) View Renderer settings Reset Reset to optimal renderer settings (#4) The files I have are all H.264 mkv files, but I don't think the file format/encoding matters.

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• Problems with 5.1 digital out on Ubuntu 12.04

  - by user895319

  I've recently bought a new PC, installed Ubuntu and am now unable to get 5.1 digital sound working. Simple analogue stereo works fine on both the front and rear connectors. On my old box I connected the coax connection from my soundcard to my surround sound amplifier, set Settings-Sound to "Digital Stereo Duplex" and it worked. My old soundcard doesn't fit in my new machine so I'm using the built-in sound hardware. I'm connecting the combination output socket on the back of the PC via the same cable to my surround amp as before. The MB is an MSI Global H61M-P31 with an RealTek ALC887 sound chip. When I go to Settings-Sound I only see "Headphone Built-in Audio" and "Analogue Output Built-in Audio" - no digitial options. The output from aplay -l is: default Playback/recording through the PulseAudio sound server sysdefault:CARD=PCH HDA Intel PCH, ALC887-VD Analog Default Audio Device front:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog Front speakers surround40:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers dmix:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog Direct sample mixing device dsnoop:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog Direct sample snooping device hw:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog Direct hardware device without any conversions plughw:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog Hardware device with all software conversions While googling for ALC887 I've seen some references to "ALC887 -VD Analog" and some to "ALC887 -VD Digital". Does anyone know if I need to force it to chance mode somehow? It's worth mentioning that when I set the output to 5.1 digital surround in Windows 7 on the same machine I still don't get any sound so it's not a unique Linux problem. Thanks for any help.

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• Metacity/Compiz not staring upon Login Ubuntu 10.10

  - by Ryan Lanciaux

  TLDR: As of this afternoon, I do not have a window manager when I login to Ubuntu 10.10. I would like to have window manager on login without needing to add to startup. Just started using linux again as my home OS. (Used it for a long time years ago but been on windows up until this past weekend) so this may be kind of n00b-ish :) Anyways, up until today, everything on my machine was running okay. I did not have compiz running as the default wm because I'm running NVidia Drivers and Xinerama (and as I understand Xinerama & Compiz don't work well together). I made no changes to my xorg / etc but today when I logged in, I had to manually start metacity from command line to get any window manager. Really not sure what would be causing this or what I can do to get it working again. My xorg.conf is available here: https://gist.github.com/845618. My default Window Manager is set to /usr/bin/metacity in Configuration Editor under /desktop/gnome/applications/window_manager. p.s. Any tips on how to run 3 monitors where I can move windows between screens without Xinerama would be appreciated but that's prolly for another thread :)

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• Apache Virtual host (SSL) Doc Root issue

  - by Steve Hamber

  I am having issues with the SSL document root of my vhosts configuration. Http sees to work fine and navigates to the root directory and publishes the page fine - DocumentRoot /var/www/html/websites/ssl.domain.co.uk/ (as specified in my vhost config) However, https seems to be looking for files in the main apache document root found further up the httpd.conf file, and is not being overwritten by the vhost config. (I assume that vhost config does overwrite the default doc root?). DocumentRoot: The directory out of which you will serve your documents. By default, all requests are taken from this directory, but symbolic links and aliases may be used to point to other locations. DocumentRoot "/var/www/html/websites/" Here is my config, I am quite a new Linux guy so any advise is appreciated on why this is happening!? NameVirtualHost *:80 NameVirtualHost *:443 <VirtualHost *:443> ServerAdmin root@localhost DocumentRoot /var/www/html/websites/https_domain.co.uk/ ServerName ssl.domain.co.uk ErrorLog /etc/httpd/logs/ssl.domain.co.uk/ssl.domain.co.uk-error_log CustomLog /etc/httpd/logs/ssl.domain.co.uk/ssl.domain.o.uk-access_log common SSLEngine on SSLOptions +StrictRequire SSLCertificateFile /var/www/ssl/ssl_domain_co_uk.crt SSLCertificateKeyFile /var/www/ssl/domain.co.uk.key SSLCACertificateFile /var/www/ssl/ssl_domain_co_uk.ca-bundle </VirtualHost> <VirtualHost *:80> ServerAdmin root@localhost DocumentRoot /var/www/html/websites/ssl.domain.co.uk/ ServerName ssl.domain.co.uk ErrorLog /etc/httpd/logs/ssl.domain.co.uk/ssl.domain.xo.uk-error_log CustomLog /etc/httpd/logs/ssl.domain.co.uk/ssl.domain.xo.uk-access_log common </VirtualHost>

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• Setting up SSL on JBoss 5

  - by socal_javaguy

  How can I enable SSL on JBoss 5 on a Linux (Red Hat - Fedora 8) box? What I've done so far is: (1) Create a test keystore. (2) Placed the newly generated server.keystore in $JBOSS_HOME/server/default/conf (3) Make the following change in the server.xml in $JBOSS_HOME/server/default/deploy/jbossweb.sar to include this: <!-- SSL/TLS Connector configuration using the admin devl guide keystore --> <Connector protocol="HTTP/1.1" SSLEnabled="true" port="8443" address="${jboss.bind.address}" scheme="https" secure="true" clientAuth="false" keystoreFile="${jboss.server.home.dir}/conf/server.keystore" keystorePass="mypassword" sslProtocol = "TLS" /> (4) The problem is that when JBoss starts it logs this exception (during start-up) (but I am still able to view everything under http://localhost:8080/): 03:59:54,780 ERROR [Http11Protocol] Error initializing endpoint java.io.IOException: Cannot recover key at org.apache.tomcat.util.net.jsse.JSSESocketFactory.init(JSSESocketFactory.java:456) at org.apache.tomcat.util.net.jsse.JSSESocketFactory.createSocket(JSSESocketFactory.java:139) at org.apache.tomcat.util.net.JIoEndpoint.init(JIoEndpoint.java:498) at org.apache.coyote.http11.Http11Protocol.init(Http11Protocol.java:175) at org.apache.catalina.connector.Connector.initialize(Connector.java:1029) at org.apache.catalina.core.StandardService.initialize(StandardService.java:683) at org.apache.catalina.core.StandardServer.initialize(StandardServer.java:821) at org.jboss.web.tomcat.service.deployers.TomcatService.startService(TomcatService.java:313) I do know that's there's more to be done to enable full SSL client authentication....

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