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• Rate limiting bandwidth per IP

  - by Yohan

  First, I am not that good with computer. I even had problem with Windows PC. Right now I own a restaurant which happened to offer free internet. My ISP has my connection setup using a Ubuntu 11.1 box. IP Address is 192.168.1.16 with netmask 255.255.0.0, dns is 192.168.1.1 and gateway is 192.168.1.1. My problem is that my customers complains all day about slow network. When I received that kind of complain, the first thing came to my mind is to scout my area and find out who is the culprit, and ask him not to waste our bandwidth. Now, it is getting bored scouting people around, and I need to implement to my Linux box to limit bandwidth. I don't care if their provider can't be faster, but I want to limit 70kbit for each person. More annoying are people who use flashget and torrents. Usually they consume the biggest bandwidth. My question, how can I limit that? Please guide me in easy way. I've spent few days reading tc documents but doesn't understand a thing. I am using Ubuntu 11.10 Basically, I want all my customer get 70kbps each, no matter what.

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• Users and Groups management on 7 Home Premium

  - by AviD

  Recently upgraded the home pc from XP pro, to Windows 7 Home Premium. I'm looking for a solution for a few things that seem to be missing from this edition... Since Local Users and Groups is blocked on Home Premium, I can't figure out how to manage groups, or even do anything even slightly advanced to users (basically, create/group/picture is it). net localgroup, net users, net etc dont seem to work - getting "system error 5". While I'm on the topic, I cant activate (what was once) "Local Security Policy"... Looking for any help, advice, or even a new direction cuz things is differ'nt on Winnows7... To clarify, I'm looking to do some of the following, which were simply back in XP-land: remote user only (i.e. no local logon) Grant special privileges for specific user grant access to e.g. C$ share for specific remote user create custom groups for users, to be able to separate privileges of say, my wife's from my kids define quite specifically what each user can do (beyond just standard users) Harden OS (hmm, i guess maybe what i'm looking for is security hardening guide for 7...?)

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• Windows 2003 DC to Windows 2008 R2 DC with same name and same IP

  - by TheCleaner

  Environment = Windows 2003 native domain with 8 DCs I've got an old domain controller that is running 2003, CA Enterprise role, DHCP, DNS, a few GPO scripts that point to shares on it, and some other minor functions. All our servers point to it as their primary DNS, and there's lots of references to its IP or name throughout the domain at this point (8+ years later). I really don't feel like manually changing all of this, it would be a pretty massive undertaking. I want to follow this guide: http://msmvps.com/blogs/acefekay/archive/2010/10/09/remove-an-old-dc-and-introduce-a-new-dc-with-the-same-name-and-ip-address.aspx to hopefully end up with basically an "in-place upgrade" so to say. I considered just doing a P2V of the box, but we don't really want to keep it around running 2003 to be honest. I also considered using a CNAME and adding a 2nd IP (the old one) but again, it seemed like it would be cleaner using the attached link. My actual question: Any gotchas or big caution signs when doing what the link suggests? Anyone gone down this road and have advice on how to proceed?

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• Hibernate between OS X and Bootcamp Win 7

  - by Willem

  Wouldn't it be great if someone wrote a guide or an app which allowed you to switch instantly between OS X and Windows using Hibernate in both OS:s? Windows 7 already has an option "Hibernate" which allows you to boot back to your OS X partition, but OS X does not exactly offer the same. However, there are possibilities here. It seems that the recent Mac's have 3 different kinds of sleeping mode: Sleep: Low power consumption, RAM still active. Legacy Safe Sleep: No power consumption(?), writes RAM to disk and shuts down (is this the same as Hibernate?) Safe Sleep: Writes RAM to disk and enters sleep mode. If battery level drops too low it goes into Hibernate (is this Hibernate the same as #2 in this list? This is the Hibernate I will be referring to int he rest of this post) It seems that I am unable to force my MacBook Pro (Late 2011) OS X 10.7.3 into a true hibernate using either command line or apps that are supposed to do this. I believe the Mac should show that white loading bar whilst waking up if it was truly put into hibernate (which it does not). But I can get this white bar to show by letting my battery level drop to 0% so there is obviously a system function for it (obviously, duh! :). When Win 7 goes into hibernate it shuts down completely and you can then boot into OS X on startup. On OS X however, hibernate forces you to wake up into OS X. Can you hack this so that you're allowed to select boot partition after OS X hibernates? Would it be possible to use the true hibernate system functionalities of Win 7 and OS X to create a kind of instant switching between the two? Imagine this on a quick SATA-3 SSD like my 180GB Intel 520. Thanks / Willem

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• Problems Installing slapd On Ubuntu Server 11.10

  - by Zach Dziura

  I know that there's a Ubuntu-specific StackExchange website, but I thought that I'd ask here because it's a server-specific question. If I'm wrong in my logic... Well, you people are better at this than I am! O=) On with the show! I'm in the process of installing Oracle Database 11g R2 Standard Edition onto Ubuntu Server 11.10. I found a guide on the Oracle Support Forums that walks you through the process fairly easily. Unfortunately, I'm running into issues installing one particular dependency: slapd. When I go to install it, I get this error message: (Reading database ... 64726 files and directories currently installed.) Unpacking slapd (from .../slapd_2.4.25-1.1ubuntu4.1_amd64.deb) ... Processing triggers for man-db ... Processing triggers for ufw ... Processing triggers for ureadahead ... Setting up slapd (2.4.25-1.1ubuntu4.1) ... Usage: slappasswd [options] -c format crypt(3) salt format -g generate random password -h hash password scheme -n omit trailing newline -s secret new password -u generate RFC2307 values (default) -v increase verbosity -T file read file for new password Creating initial configuration... Loading the initial configuration from the ldif file () failed with the following error while running slapadd: str2entry: invalid value for attributeType olcRootPW #0 (syntax 1.3.6.1.4.1.1466.115.121.1.15) slapadd: could not parse entry (line=1051) dpkg: error processing slapd (--configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: slapd E: Sub-process /usr/bin/dpkg returned an error code (1) After much Google searches and forum trolling, I have yet to find a definitive answer as to what's going wrong. The error messages seem straight forward enough, but I have no idea how to debug this. Can anyone offer some assistance? Again, if I'm asking in the wrong place, I apologize. If I'm indeed asking properly, then thank you for any and all help!

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• What is proper relationship between /etc/hosts and DNS A records for a Linux server?

  - by MountainX

  I have an Ubuntu server. It is going to be a web server with a URI of www.example.com. I have a DNS A record pointing www.example.com to the server's IP address. Let's say I pick "trinity" as the hostname for this server. I want to set up the DNS records correctly. I need reverse DNS to www.example.com, so a CNAME for www.example.com doesn't seem appropriate. Here's my question: Is it considered best practice to set up two DNS records (which in my case would likely be two A records), one for www.example.com and one for trinity.example.com, both pointing to this server's IP address? (Or, even if it is not accepted as a best practice, is it a good idea?) If so, would the following be a proper /etc/hosts file? $ cat /etc/hosts 127.0.1.1 trinity.local trinity 99.100.101.102 trinity.example.com trinity www.example.com This server is a Linode and Linode's docs seem to imply that the above approach is best (if I am reading them correctly). Here's the relevant section. I bolded the line that seems to apply here. Update /etc/hosts Next, edit your /etc/hosts file to resemble the following example, replacing "plato" with your chosen hostname, "example.com" with your system's domain name, and "12.34.56.78" with your system's IP address. As with the hostname, the domain name part of your FQDN does not necesarily need to have any relationship to websites or other services hosted on the server (although it may if you wish). As an example, you might host "www.something.com" on your server, but the system's FQDN might be "mars.somethingelse.com." File:/etc/hosts 127.0.0.1 localhost.localdomain localhost 12.34.56.78 plato.example.com plato The value you assign as your system's FQDN should have an "A" record in DNS pointing to your Linode's IP address. For more information on configuring DNS, please see our guide on configuring DNS with the Linode Manager.

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• Timely automatic unexpected reboot on ubuntu desktop

  - by ahmad

  We have a remote linux server (ubuntu desktop). The system log indicates the system has been restarted on the timely fashion. Here is a part of the last output: ut pts/0 192.169.50.2-sta Sat Nov 24 22:17 still logged in reboot system boot 2.6.32-21-generi Sat Nov 24 22:04 - 22:17 (00:13) ut pts/0 server.local Sat Nov 24 21:36 - crash (00:27) reboot system boot 2.6.32-21-generi Sat Nov 24 15:55 - 22:17 (06:21) reboot system boot 2.6.32-21-generi Fri Nov 23 18:02 - 22:17 (1+04:14) reboot system boot 2.6.32-21-generi Fri Nov 23 10:39 - 22:17 (1+11:38) reboot system boot 2.6.32-21-generi Fri Nov 23 04:18 - 22:17 (1+17:59) reboot system boot 2.6.32-21-generi Fri Nov 23 03:57 - 22:17 (1+18:20) reboot system boot 2.6.32-21-generi Thu Nov 22 20:38 - 22:17 (2+01:38) reboot system boot 2.6.32-21-generi Thu Nov 22 11:13 - 22:17 (2+11:03) reboot system boot 2.6.32-21-generi Thu Nov 22 08:12 - 22:17 (2+14:05) reboot system boot 2.6.32-21-generi Wed Nov 21 11:16 - 22:17 (3+11:00) reboot system boot 2.6.32-21-generi Tue Nov 20 22:36 - 22:17 (3+23:41) reboot system boot 2.6.32-21-generi Tue Nov 20 14:12 - 22:17 (4+08:05) reboot system boot 2.6.32-21-generi Tue Nov 20 11:32 - 22:17 (4+10:44) reboot system boot 2.6.32-21-generi Tue Nov 20 01:52 - 22:17 (4+20:25) reboot system boot 2.6.32-21-generi Tue Nov 20 00:22 - 22:17 (4+21:55) reboot system boot 2.6.32-21-generi Mon Nov 19 17:27 - 22:17 (5+04:50) It looks the system is set to be restarted at 22:17. Can anyone guide me why this happens? Thanks in advance.

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• How can I change the binding order of network adapters in Windows 7?

  - by Chris Farmer

  The end goal here is that I am trying to install an Oracle 10g server on my Windows 7 x64 dev box. I use DHCP, and the Oracle installer is throwing up this warning: Checking Network Configuration requirements ... Check complete. The overall result of this check is: Failed <<<< Problem: The install has detected that the primary IP address of the system is DHCP-assigned. Recommendation: Oracle supports installations on systems with DHCP-assigned IP addresses; However, before you can do this, you must configure the Microsoft LoopBack Adapter to be the primary network adapter on the system. See the Installation Guide for more details on installing the software on systems configured with DHCP. I have installed the loopback adapter, but I am not sure how to make it the primary network adapter. I see this Microsoft KB article on the subject but it's Windows XP-oriented, and I can't seem to find a comparable one for Windows 7. Some of the options it talks about don't seem to be present in the views of the adapters that I see. So, how can I make the loopback adapter become the primary adapter?

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• IP routing Solaris 9 access the internet from local network

  - by help_me

  I am trying to configure the NICS on the Solaris Sparc server. My problem lies in getting out to the "Internet" from the local network. I have requested the NIC to receive a DHCP server address #ifconfig -interface dhcp start. If anyone could guide me as to what I need to do next. I am not able to ping 4.2.2.2 or access the internet. Much appreciated, thank you #uname -a SunOS dev 5.9 Generic_122300-59 sun4u sparc SUNW,Sun-Fire-V210 ifconfig -a lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4> mtu 8232 index 1 inet 127.0.0.1 netmask ff000000 bge0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2 inet 10.100.0.3 netmask ffffc000 broadcast 10.100.63.255 bge0:2: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2 inet 10.100.0.22 netmask ffffc000 broadcast 10.100.63.255 bge3: flags=1004843<UP,BROADCAST,RUNNING,MULTICAST,DHCP,IPv4> mtu 1500 index 12 inet 169.14.60.37 netmask fffffe00 broadcast 169.14.61.255 cat /etc/defaultrouter 10.100.0.254 169.14.60.1 cat /etc/resolv.conf nameserver 169.14.96.73 nameserver 169.10.8.4 netstat -rn Routing Table: IPv4 Destination Gateway Flags Ref Use Interface -------------------- -------------------- ----- ----- ------ --------- 169.14.60.37 169.14.60.1 UGH 1 0 169.14.60.0 169.14.60.37 U 1 18 bge3 10.100.0.0 10.100.0.3 U 1 34940 bge0 10.100.0.0 10.100.0.22 U 1 0 bge0:2 224.0.0.0 10.100.0.3 U 1 0 bge0 default 10.100.0.254 UG 1 111 default 169.14.60.1 UG 1 26 127.0.0.1 127.0.0.1 UH 10 59464 lo0 bash-2.05$ sudo ndd -get /dev/ip bge0:ip_forwarding 1 bash-2.05$ sudo ndd -get /dev/ip bge3:ip_forwarding 1 bash-2.05$ sudo ndd -get /dev/ip ip_forwarding 1

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• Dual-booting Windows 7 and Ubuntu

  - by CFP

  Hello everyone, I've just received my Dell Studio 17 laptop, which comes with Windows 7 x64 preinstalled. I'm having quite a hard time installing ubuntu on it. First of all, here is how I partitioned the drive using GPartEd: |==Dell utility partition==|==Dell Recovery partition==|==Windows 7==|[==Ubuntu==|==Data partition==]| Where [] denotes an extended partition. Here are the steps I completed: I used GParted to create this structure, keeping windows 7 installed I booted ubuntu LiveCD, and installed it on the right partition I let it install grub automatically I rebooted intu ubuntu I went back to windows 7, no problems I then rebooted. Grub was gone. I used Super Grub Disk to restore grub, it didn't work. I tried to boot into ubuntu from supergrubdisk, but grub couldn't fint the boot folder I then reinstalled ubuntu, went through the same steps, but there SGD did boot my ubuntu I reverted to the previous version of grub, and installed it on my hard drive It worked, but trying to boot win7 got me the "No MBR, press Ctrl+Alt+Del to reboot" error I used the windows 7 cd to restore the MBR (the auto wizard didn't work, had to rebuild the mbr from command line Now Ubuntu is gone. 7 works fine I read a lot about this, and realized that many people could simply not boot win7 again after encountering this problem. Now I'd like to restore GRUB, but I really won't go through the hassle of doing a full new cycle of installing/reinstalling everything again. Is there a GRUB guru around, to provide me with a detailed guide to not screwing everything up once again? Thanks a lot!

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• Multiple rack apps on nginx + passenger, one as root, the other not...config help

  - by cannikin

  So I've got two apps I want to run on a server. One app I would like to be the "default" app--that is, all URLs should be sent this app by default, except for a certain path, lets call it /foo: http://mydomain.com/ -> app1 http://mydomain.com/apples -> app1 http://mydomain.com/foo -> app2 My two rack apps are installed like so: /var /www /apps /app1 app.rb config.ru /public /app2 app.rb config.ru /public app1 -> apps/app1/public app2 -> apps/app2/public (app1 and app2 are symlinks to their respective apps' public directories). This is the Passenger setup for sub URIs described here: http://www.modrails.com/documentation/Users%20guide%20Nginx.html#deploying_rack_to_sub_uri With the following config I've got /foo going to app2: server { listen 80; server_name mydomain.com; root /var/www; passenger_enabled on; passenger_base_uri /app1; passenger_base_uri /app2; location /foo { rewrite ^.*$ /app2 last; } } Now, how do I get app1 to pick up everything else? I've tried the following (placed after the location /foo directive), but I get a 500 with an infinite internal redirect in error.log: location / { rewrite ^(.*)$ /app1$1 last; } I hoped that the last directive would prevent that infinite redirect, but I guess not. /foo gets the same error. Any ideas? Thanks!

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• Building PHP For MacOS

  - by Eray

  I was using XAMPP and decided to uninstall it and use MacOS' in-built apache and php modules. But while uninstalling XAMPP I deleted /usr/bin/php files and other PHP-CLI files accidentally. And I decided to install newest version of PHP (5.5.12) instead of rebuilding current version (5.4.24). Downloaded it and unzip. After this executed this command as mentioned at this guide. ./configure '--with-apxs2=/usr/sbin/apxs' '--enable-cli' '--with-config-file-path=/etc' '--with-zlib=/usr' '--enable-bcmath' '--with-bz2=/usr' '--enable-calendar' '--disable-cgi' '--with-curl=/usr' '--enable-dba' '--enable-ndbm=/usr' '--enable-exif' '--enable-fpm' '--enable-ftp' '--with-gd' '--enable-gd-native-ttf' '--enable-mbregex' '--with-mysql=mysqlnd' '--with-mysqli=mysqlnd' '--with-pear' '--with-pdo-mysql=mysqlnd' '--with-mysql-sock=/var/mysql/mysql.sock' '--with-tidy' '--enable-wddx' '--with-xmlrpc' '--enable-zip' make make install When i check phpinfo() , it's still version 5.4.24 . This line from my httpd.conf LoadModule php5_module libexec/apache2/libphp5.so /usr/libexec/apache2/libphp5.so coming from old version and i couldn't ind libphp5.so for new version. There is no libphp5.so file inside modules dir. How can i use new PHP build with Apache ? UPDATE Results of php -v command . PHP 5.5.12 (cli) (built: May 27 2014 05:17:21) Copyright (c) 1997-2014 The PHP GroupZend Engine v2.5.0, Copyright (c) 1998-2014 Zend Technologies

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• Debian Wheezy 7.5 64bit xfce4 install error ( no desktop environment installed already )

  - by GeoMind

  i wrote a CD with an iso-image from debian.org. the debian-7.5.0-amd64-CD-1.iso from this folder. Debian Wheezy 7.5 stable 64bit There was an error at Select and install software step. It said Retrieving file 770 from 800 and then it failed the installation. I continued the instal and when i opened the computer it doesn't work the Ctrl + Alt + F7 as i waited. It starts at tty1 and after logging in i edited config file cause it had a lot of errors and said E: Unable to correct problems, you have held broken packages or Couldn't found the package. FILE: /etc/apt/sources.list # deb cdrom:[Debian GNU/Linux 7.5.0 _Wheezy_ - Official amd64 CD Binary-1 20140426-13:37]/ wheezy main #deb cdrom:[Debian GNU/Linux 7.5.0 _Wheezy_ - Official amd64 CD Binary-1 20140426-13:37]/ wheezy main deb http://security.debian.org/ wheezy/updates main contrib non-free deb-src http://security.debian.org/ wheezy/updates main contrib non-free deb http://ftp.us.debian.org/debian/ squeeze main contrib non-free deb-src http://ftp.us.debian.org/debian/ squeeze main contrib non-free After that i tried to install xfce4 as desktop environment. Guide found at Linux Panda But it print at terminal: What i sould do? How i can fix this problem?

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• What is the proper way of debugging a slow Windows installation?

  - by Niklas

  You know the drill - you've been asked to check why you cousin's computer is running slow. I was there yesterday. Being a Mac user since 2007 I haven't really dug deep in Windows internals in the past five years. Googling for answers reveals many, many different answers: broken registry, spyware, antivirus program, fragmented disk, turning of visual effects etc. In this particular case I was asked to look at a two year old HP laptop with Vista. Windows was running incredibly slow and even opening up a new explorer window took almost a minute. I ended up doing everything of the above: running cc cleaner, defragmenting the disk, turning off visual effects, turning off norton and a bunch of other things people believe have an impact on Windows performance. Now I'd like to understand this in depth. Is there a proper, "scientific" if you so will, way of debugging and understanding where the problem with a slow running Windows installation lies? (In my particular case this concerned Windows Vista but let's try to create general guide for XP and Windows 7 too). To me, it seems wrong to just run a bunch of different tools without understanding the underlying cause of the error.

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• esx5 debian VM vlan setup

  - by Kstro21

  i have a server with ESX5, have a switch with about 20 vlans, this is how setup the trunk port interface GigabitEthernet0/1/1 description ToOper port link-type trunk undo port trunk allow-pass vlan 1 port trunk allow-pass vlan 2 to 14 stp disable ntdp enable ndp enable bpdu enable then, i created a standar switch(sw1) using the vSphere Client, the VLAN ID is set to All (4095), i also created a VM with Debian 6, with a NIC connected to sw1, now, i want to configure this NIC for a selected group of vlans auto vlan10 iface vlan10 inet static address 11.10.1.0 netmask 255.255.255.224 mtu 1500 vlan_raw_device eth0 auto vlan14 iface vlan14 inet static address 11.10.1.65 netmask 255.255.255.248 mtu 1500 vlan_raw_device eth0 so, when i restart the network using /etc/init.d/networking restart, i got this error Reconfiguring network interfaces...SIOCSIFADDR: No such device vlan14: ERROR while getting interface flags: No such device SIOCSIFNETMASK: No such device SIOCSIFBRDADDR: No such device vlan14: ERROR while getting interface flags: No such device SIOCSIFMTU: No such device vlan14: ERROR while getting interface flags: No such device Failed to bring up vlan14. done. this is just part of the error, so, my questions is: is this possible?, i mean, what i'm trying to achieve using ESX Virtual Machines, VLANS, etc is this a Debian problem? can be solved? i've read about a file named z25_persistent-net.rules in Debian but it doesn't exist in my installation. in the In the vSphere Networking for ESX5 guide, you can read: If you enter 0 or leave the option blank, the port group can see only untagged (non-VLAN) traffic. If you enter 4095, the port group can see traffic on any VLAN while leaving the VLAN tags intact. So, in theory, it should work, right? Hope you can help me up with this one Thanks

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• Make UEFI, GPT, Bootloader, SSD, USB, Linux and Windows work together

  - by user129552

  I like to use the latest hardware and the latest software; thus I have a Laptop (Lenovo X220) with UEFI instead of BIOS an SSD instead of an HDD GPT partitioning scheme instead of MBR USB to boot from instead of optical disks. I need to use both Windows and Linux. I tried to make them work alongside, but I didn't succeed. Most Linux distribution isos don't even really work on UEFI systems booted from USB. (Not even the self-claimed cutting-edge Fedora. I also tried Linux Mint Debian Edition and Sabayon Linux (according to this guide) which did not work. Only Ubuntu worked for me. I first installed Windows 8 which created sda1: Recovery, sda2: EFI system, sda3: msftres, sda4: NTFS Windows. Windows worked without a problem. I then created sda5: linux-swap and installed Ubuntu into sda6: btrfs. After rebooting, I was not presented GRUB2 as expected, but instead my system just booted into Ubuntu. I could no longer access Windows. After fixing dpkg in btrfs Ubuntu, I followed the Ubuntu documentation on UEFI booting. The result left me with a broken GRUB2, but interestingly, when I wanted to select the device to boot from, I was not only presented the internal SSD, an attached USB device, or LAN, but also Grub2 (broken), Ubuntu and Windows. The result is not very satisfying to me. What would I have to do to fix everything? Or differently asked, what operating system should I install at what point given my possibilities and requirements, so that I have a working bootloader in my UEFI GPT system which presents me a working Linux and Windows.

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• Cacti Login Page: Infinite loop occurs

  - by beicha

  Apache 2.2.3 | PHP 5.1.6 | MySQL 5.0.77 I followed cacti installation guide to install latest cacti 0.8.7h on CentOS 5.5 (64-bit). The installation of PHP/Apache/MySQL went smoothly until I finished the setup, and came to the login page. I can login http://.../cacti/index.php with admin account but the new page is redirected to the same login page with the message "Please enter your Cacti user name and password below" This is a infinite loop! If I use a wrong admin password I get the correct error message "Invalid User Name/Password Please Retype". [Same problem here] If I login use Guest/guest account, "Error: Access Denied, user account disabled." displays. The Cacti log file (./cacti/log/cacti.log) is empty. I Googled and seems this problem has existed for a long time, but no followup solutions were found on the forum posts I found. Anyone can help me on this problem? If more information needed, please let me know. Nov 18, 2011 UPDATE: I re-installed Cacti, this question remains UNSOLVED.

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• port forwarding/network settings preventing from game hosting

  - by Xitcod13

  I asked where to post this question on stackoverflow meta and they directed me here. Im on wireless connection and I want to host games in StarCraft: Brood War and i've been looking everywhere on how to accomplish that. My internet is amazingly fast so its not an internet problem (and when i play other peoples games dont experience lag) I found out that i need to have a static IP but I have already checked that i do (i downloaded a program to make my id static and it already was; The program asked for which router I used So i think it checked the router settings already) I found out that i need to allow Sc access through the firewall which i already did (i have zone-alarm but I allowed it everything possible except receiving emails lol) I have recently noticed that few people actually can join my games but most of them cannot. I dont know whats going on here. I really want to be able to host games overall how do I go about checking what is wrong with the network. Update: Alright I figured out what i did wrong in the first part I did not actually set up forwarding on the router -.- I have tried to fix my mistake. I went to forwarding options in my router (as this guide for my specific router suggests) but when i click ok I get a message incorrect ip address. 192.168.1.1 is my routers address. The default address that appears there is 192.168.1 (blank) I have set it to my computers current Ip4 adress which 192.168.1.23 I hope this works If so i will post it as an answer and mark it.

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• Redirection of outbound UDP port.

  - by pboin

  For my residential service, I changed ISPs to Zoom/Armstrong. Just after that, my NTP daemons stopped working. I dug deep and diagnosed the problem: Unprivileged ports are getting out. When i run 'ntpdate' for example, I go out on a high, unprivleged port, and get a response on UDP 123. That's fine. The 'ntpd' daemon though, expects to go out on 123 and get its reply there as well. This must be a common problem, because it's directly addressed in the NTP troubleshooting guide. Just to see what would happen, I wrote a detailed email to the general support address at Armstrong. They replied almost immediately with a complete technical answer! They have everything <1024 blocked, except for a few ports to support outbound VPN. So, the question: Can I use IPtables to essentially re-write my outbound UDP 123 up to 2123 or something like that? If I do, does there need to be a corresponding 2123-123 rule to translate the reply? This seems like NAT, but with ports, not addresses. I tried, but can't seem to get iptables to do what I want. I'm not sure if it's my lack of skill, or if I'm trying the wrong solution. True, I could run ntpdate from cron, but that loses all of the adjustment smarts of NTP.

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• Creating a Jenkins build farm in a hands-off manner?

  - by user183394

  My colleague and I have set up and run Jenkins on a KVM guest running Ubuntu 12.04 with good results for a while now. We are thinking about deploying a cluster of Jenkins CI hosts in master/slave configuration, with the libvirt slave plugin to keep our hardware count low. Our environment is strictly Linux (CentOS, Scientific Linux, Fedora, and Ubuntu). Both of us are competent in setting up large clusters. We typically use tools like cobbler + a configuration management tool (Puppet, Chef, and alike) to set up a large number of machines (physical and/or virtual) hands off (hundreds of nodes in less than an hour typical). We would like to do the same for nodes running Jenkins. But the step by step guide doesn't give us any clues in this regard. I did see a Multi-slave config plugin. But, being used to dealing with hundreds or more machines completely hands-off, clicking the UI for many machines just doesn't feel right. Can someone point to us a reference that talks about how to set up large cluster of Jenkins CI hosts more in the hands-off way?

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• Best way to build / implement a corporate developer Linux distro with multiple kernels?

  - by Garen

  At work we have Linux users who understandably prefer using Ubuntu. Problem is, we also have developer tools that only work with 'officially' supported Linux distributions that use much older 2.6.18 based kernels. (And even if they worked with newer ones, the vendors could always say they won't "support" the software unless it's on one of their 'officially' supported platforms.) We could of course just tell them to use CentOS or something else 2.6.18-based, and I'm sure their response would be something like: "you can take Ubuntu from our cold, dead hands." :) Which brings to me some questions--is there any good/easy/recommended way to run something like Ubuntu as a host VM and Centos 5.x as a guest OS (with which system--Xen,KVM,VMWare, ...?), and then roll that into our own custom internal distribution that could be easily installed? KVM looks like a good high-performance option just recently included in RHEL 5.4, but if hardware support for virtualization like Intel-VT or AMD-V is necessary, then I'd guess only those folks with fairly new PCs will be able to do it. Would be very interested to hear how anyone else has addressed this kind issue. EDIT: The target audience / users of this kind of system would be developers, each one needs to run locally licensed commercial software, so building out some separate beefy central machines isn't an option unfortunately due to license restrictions. Even if that weren't the case, a couple developers could quickly eat up the resources with parallel builds. :) Ideally, I was hoping there was some step-by-step guide out there to build your own pre-built distribution that had e.g. CentOS 5.x and Ubuntu Desktop as a guest.

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• How can I setup nginx to serve virtualhosts with rails(unicorn/passenger) and php-fpm

  - by NewAlexandria

  I would like to serve multiple sites on one instance. I install nginx, php-fpm, and a rails app. I use sites like this to guide me. I configure php-fpm to listen to a local socket listen = /var/run/php-fpm/php-fpm.sock I configure ngnix with multiple hosts: include /etc/nginx/conf.d/*.conf I have several site php conf files like /etc/nginx/conf.d/site1.conf server { listen 80; server_name site1.com www.site1.com; root /var/www/site1; location / { index index.html index.php; } location ~ \.php$ { fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock; fastcgi_index index.php; include fastcgi_params; fastcgi_param PATH_INFO $fastcgi_script_name; fastcgi_param SCRIPT_FILENAME $document_root/$fastcgi_script_name; } } and rails site conf files like upstream rails { server 127.0.0.1:3000; } server { listen 80; server_name site2.com www.site2.com; root /var/www/site2; location / { proxy_pass http://rails; proxy_set_header X-Forwarded-For $remote_addr; proxy_set_header Host $host; proxy_set_header X-Url-Scheme $scheme; } } I have a unicorn rails server running via rails s -p 3000 Yet, no sites come up for either site1.com or site2.com. I can get to the rails site at www.site2.com:3000 What is wrong? I've spent 2 days (nearly 30hr) trying many different blogs, SO / SF questions, etc. Please share your insight or answer. edit 1: No log entries are created when I try to visit either site. It's like the requests never come in.

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• Can't connect to Server Manager from Windows 7

  - by SAdmin317

  I have a Windows 7 Pro 64bit with SP1 desktop that has RSAT tools installed. I opened Server Manager and can't connect to the server (Server 2008 R2 core). I followed the guide to enable everything on the server, added a registry key to enable read-only on the device manager as well. On the Windows 7 PC I turned on winrm, did the quick config, and added the server IP and name as trusted hosts. I still get an error when connecting. "Connecting to the remote server failed with the following error message: The WinRM client cannot process the requests. If the authentication scheme is different from Kerberos, or if the client computer is not joined to a domain, then HTTPS transport must be used or the destination machine must be added to the TrustedHosts configuration setting...." I also added the name of the server to the windows 7 /etc/hosts file. Ping the server name translates to the IP of the server. Also opened up the firewall for "Remote Volume Management" Both machines are on the same Workgroup, using the same Administrator account, with the same password. Any help appreciated.

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• torrent downloads not showing on Squid log

  - by noobroot

  hello, i have just a few months working as sysadmin, hence i still have lots to learn, first thing id like to do is as follows: We have an OpenBSD 4.5 box acting like firewall,dns,cache etc, the box has 2 network cards, one conected directly to the internet and the other to our switch, i used to work with sarg for the log analysis but then changed to the much faster free-sa. I use a daily free-sa report to check the bandwidth usage and report our top 5 bandwidth consumers (3 days a week being #1 and you will be buying the pizzas :D, we are a small company ~20 so we are very familiar). this was working really good until recently, one of us required to download some stuff via torrent (~3GB) and since the pizza rule is active for non-work related downloads, he told me (verified) that his download was indeed work related so i would dismiss that 3GB off his quota, but to my surprise the log didnt showed that 3GB, since his ip consumption was only around 290MB. More recently, since the FIFA world cup started, we know that some of the employees are watching the match's streaming, we know it and we dont care about it since, like already stated, we are a small company so we dont have restrictive policies, we all can chat, watch youtube, download anything we want BUT we are only allowed 300MB a day otherwise you'll get in the top5-pizza-board, anyway, that streaming consumption is also not showing in the free-sa reports. So my question is, why is these data being excluded from the reports? im thinking that the free-sa reports list only certain types of things but im also thinking if are the squid logs the ones that are not erm... logging these conections. Any help, guide, advice or clarification is appreciated.

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• Nginx flv audio pseudo stream works but video is not loading

  - by sarah

  I am working on a development server for a company & they want nginx webserver to work with. So the requirements for their company is, it should be capable of doing following things i.e hotlink protection, mp4 & flv pseudo stream & secure streaming. However nginx fulfills their requirements and i am configuring their server from past 2 days as i am new to this field so i've only acheived hotlinking prevention in past 2 days. But the problem on which i am stuck is flv pseudo streaming, to make work to mp4 pseudo stream it was just a piece of paper but i am really fuc*ed up with flv pseudo stream. I have converted my flv videos with flvmdi tools to insert many keyframes but the problem is , when i try to seek video from following keyframes that are generated by flvmdi i.e test.flv?start=2681223, video does not load but audio pseudo works fine. So it means no problem with my flv configuration in nginx.conf file. And the forum that i used to compile my nginx-1.2.1 is http://h264.code-shop.com/trac/wiki/Mod-H264-Streaming-Nginx-Version2 & by adding additional module --with-http_flv_module. This forum is really active, hopes i will resolve my problem as soon as you guys will provide me some guide.

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