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• IRC server connecting to another server

  - by Oxinabox

  I'm setting up an IRC server using IRC-Hybrid, I want my server to connect to another server, so that people on my server can connect to channels on that other server. I know this can be done, the GIMP IRC, is the same as the GNOME IRC My ircd.conf contains the following: connect { name = "aabstractname"; host = "128.64.2.1; send_password = "somepass"; accept_password = "somepass"; encrypted = no; port = 6667; class = "server"; autoconn = yes; compressed = yes; fakename = "irc.sd.dom.asn.au"; }; So when i run: /etc/init.d/ircd-hybrid restart it should be connecting to 128.64.2.1, but the log on 128.64.2.1, doesn't show anything Do I need entry on the host 128.64.2.1? I can't find any documentation for ircd.conf I'ld really like that documentation so I can check all my settings are right.

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• how to prevent log output from PostgreSQL stored procedure ?

  - by ssc

  I am running a number of PostgreSQL scripts that used to produce excessive log output. I managed to reduce most of the output to an acceptable amount by passing --quiet as parameter to the psql command line client and adding SET client_min_messages='warning'; to the beginning of my SQL scripts. This works fine for most basic statements like SELECT, INSERT, UPDATE, etc.) However, when I call a stored function in a script using e.g. SELECT my_func(my_args);, there is still log output similar to my_func (omitted a long with many '-' here because SF thinks that's a headline) (1 row) The output is useless; it only makes me having to scroll back up a long way after the script has run and also makes it much harder than necessary to spot any relevant error output. How can I get rid of it ?

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• Persistent TCP connection in DMZ

  - by G33kKahuna

  A vendor is requesting to allow persistent tcp (not port 80) connection between a server in the DMZ and the internal network. I don't have much experience with this setting. Can anyone shed some light on disadvantages of allowing persistent connection? Guidance is much apprciated.

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• PHP-FPM conf location option when compiling php

  - by Danack

  I'm compiling PHP from source. I would like to set the location that PHP-FPM looks for it's config file. Apparently this option should be set via the configure option: --with-fpm-conf=/etc/php/php-fpm.conf According to http://php-fpm.org/wiki/Configuration_File However using this option on PHP5.5.0 gives the error configure: WARNING: unrecognized options: --with-fpm-conf How do I set where PHP-FPM should look for it's conf file when compiling from source?

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• Change lxadmin watchdog frequency of testing services

  - by Tomaszs

  I had lxadmin, now I have only some remains of it. I don't have any admin panel for lxadmin. But I have watchdog that takes care of restarting services that go down. It checks services once per 2 hours. Do you know what to do to make watchodog restart services faster?

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• Properly configuring Linux keyboard on my laptop

  - by antoniocs

  Hey! I have a ps/2 keyboard connected to an Acer Aspire 1694 WLMI via a ps/2 to usb converter. The laptop is running Ubuntu 9.04. The keyboard is a HP model number: SK-250C. I have configured in the 'Keyboard Preferences' the layout to HP SK-250x Multimedia Keyboard. The big problem is when I press certain keys (like for example the arrow keys) I get the 'Save Screenshot' dialog. This is really getting annoying, sometimes I am tying to write an address in browser and just want to go back a few letters and can't. There are other keys that trigger the dialog also (windows key, insert key, home key, page up and page down key, delete key, end key) All works fine If I use the laptop keyboard, but I really want to use the HP keyboard. EDIT: I was testing this and it seems that if I have the 'Num Lock' key turned off the keys work properly. Strange but true!!

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• Unable to configure SSH in Cygwin

  - by Sam Vo

  I'm new to Cygwin and I'm trying to install Cygwin with SSH. But currently I got a problem while configuring SSH. I passed all steps for configuring SSH until it asks for the password of the privileged user "cyg_server". I was unable to type any character into the Cygwin for the password. I don't know how to provide the password for this privileged user. Can you please help me on this? Or can you please show me some other way to install the SSH using Cygwin? I appreciate all helps. Regards, Sam Vo

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• Can't bring NAT to work

  - by user31738

  Hello, I bought a D-link DIR-300 wireless router and i can't bring NAT to work, i have an ssh and http service i need to forward to the internet. My connection is as follows: I have an ADSL connection, i'm using a ADSL ethernet modem connected and working, it doesnt let me put it on bridge mode. I have my router connected to my adsl modem through ethernet, it gets its ip through DHCP (and i'ts always the same) I have a desktop computer running linux with apache and openssh configured and working, it has fixed ip. I configured the NAT in the modem forwarding port 22 from the router ip to the internet. In the router i setup NAT forwarding port 22 from the desktop computer fixed ip to out there. This setup already worked with a fonera i had before, can anyone help me with this or tell me what kind of tests do i need to do? How can i test if the router is forwarding ports correctly before the modem?

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• Why would I need a firewall if my server is well configured?

  - by Aitch

  I admin a handful of cloud-based (VPS) servers for the company I work for. The servers are minimal ubuntu installs that run bits of LAMP stacks / inbound data collection (rsync). The data is large but not personal, financial or anything like that (ie not that interesting) Clearly on here people are forever asking about configuring firewalls and such like. I use a bunch of approaches to secure the servers, for example (but not restricted to) ssh on non standard ports; no password typing, only known ssh keys from known ips for login etc https, and restricted shells (rssh) generally only from known keys/ips servers are minimal, up to date and patched regularly use things like rkhunter, cfengine, lynis denyhosts etc for monitoring I have extensive experience of unix sys admin. I'm confident I know what I'm doing in my setups. I configure /etc files. I have never felt a compelling need to install stuff like firewalls: iptables etc. Put aside for a moment the issues of physical security of the VPS. Q? I can't decide whether I am being naive or the incremental protection a fw might offer is worth the effort of learning / installing and the additional complexity (packages, config files, possible support etc) on the servers. To date (touch wood) I've never had any problems with security but I am not complacent about it either.

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• Can I disable Pam Loginuid? Can I find out options used to configure kernel?

  - by dunxd

  I am getting a lot of the following types of error in my secure log on a CentOS 5.4 server: crond[10445]: pam_loginuid(crond:session): set_loginuid failed opening loginuid sshd[10473]: pam_loginuid(sshd:session): set_loginuid failed opening loginuid I've seen discussion of this being caused when using a non-standard kernel without the correct CONFIG_AUDIT and CONFIG_AUDITSYSCALL options set. Where this is the case, it is advised to comment out some lines in the pam.d config files. I am running a Virtual Private Server where I need to use the kernel provided by the supplier. Is there a way to find out what options they used to configure the kernel? I want to verify if the above is the cause. If this turns out not to be the cause, what are the risk of disabling pam_loginuid for crond and sshd?

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• Web Applications under Apache Tomcat with multiple directory contexts

  - by goran

  I have two webapps, prod-1.2.1.war and test-2.0.0.war. If I put these straight into the "tomcat/webapps"-folder, they'll get deployed as; hXXp://localhost/prod-1.2.1/ hXXp://localhost/test-2.0.0/ This works but really I would like them to show up as; hXXp://localhost/vegshop/prod/ hXXp://localhost/vegshop/test/ As you see I somehow would like the "vegshop" to be included in the context path. I also would like the version-numbering to disappear without having to rename the WAR-files. Thank you. This is Apache Tomcat v6.0 under Linux 2.6, running SUN JDK 1.6.

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• Server Recovery from Denial of Service

  - by JMC

  I'm looking at a server that might be misconfigured to handle Denial of Service. The database was knocked offline after the attack, and was unable to restart itself after it failed to restart when the attack subsided. Details of the Attack: The Attacker either intentionally or unintentionally sent 1000's of search queries using the applications search query url within a couple of seconds. It looks like the server was overwhelmed and it caused the database to log this message: Server Specs: 1.5GB of dedicated memory Are there any obvious mis-configurations here that I'm missing? **mysql.log** 121118 20:28:54 mysqld_safe Number of processes running now: 0 121118 20:28:54 mysqld_safe mysqld restarted 121118 20:28:55 [Warning] option 'slow_query_log': boolean value '/var/log/mysqld.slow.log' wasn't recognized. Set to OFF. 121118 20:28:55 [Note] Plugin 'FEDERATED' is disabled. 121118 20:28:55 InnoDB: The InnoDB memory heap is disabled 121118 20:28:55 InnoDB: Mutexes and rw_locks use GCC atomic builtins 121118 20:28:55 InnoDB: Compressed tables use zlib 1.2.3 121118 20:28:55 InnoDB: Using Linux native AIO 121118 20:28:55 InnoDB: Initializing buffer pool, size = 512.0M InnoDB: mmap(549453824 bytes) failed; errno 12 121118 20:28:55 InnoDB: Completed initialization of buffer pool 121118 20:28:55 InnoDB: Fatal error: cannot allocate memory for the buffer pool 121118 20:28:55 [ERROR] Plugin 'InnoDB' init function returned error. 121118 20:28:55 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed. 121118 20:28:55 [ERROR] Unknown/unsupported storage engine: InnoDB 121118 20:28:55 [ERROR] Aborting **ulimit -a** core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 13089 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 1024 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 8192 cpu time (seconds, -t) unlimited max user processes (-u) 1024 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited **httpd.conf** StartServers 10 MinSpareServers 8 MaxSpareServers 12 ServerLimit 256 MaxClients 256 MaxRequestsPerChild 4000 **my.cnf** innodb_buffer_pool_size=512M # Increase Innodb Thread Concurrency = 2 * [numberofCPUs] + 2 innodb_thread_concurrency=4 # Set Table Cache table_cache=512 # Set Query Cache_Size query_cache_size=64M query_cache_limit=2M # A sort buffer is used for optimizing sorting sort_buffer_size=8M # Log slow queries slow_query_log=/var/log/mysqld.slow.log long_query_time=2 #performance_tweak join_buffer_size=2M **php.ini** memory_limit = 128M post_max_size = 8M

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• How do I set up different configurations on an Ubuntu laptop based on different physical locations?

  - by Andrew Larned

  I'm looking for a way to have a couple (or three) multiple configurations set up on my laptop, and easily switch between them. To be more specific, when my laptop is at work, it's plugged into a second monitor, and has a specific set of networks configurations. At home, the second monitor is gone, the network configurations are different. At a public wireless point there are other configurations to set, etc. I know I can go into my preferences and turn on/turn off the monitor, and mess with the networking preferences, and so on, but I'm looking for a way to change a bunch of preferences all at once, and if it's possible to do that automatically, maybe based on the wireless APs in the vicinity, that would be even better.

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• Important hardware components to avoid bottlenecks/improve speed on a laptop?

  - by joelhaus

  Looking for a powerful general use (including web development) laptop running Windows. Price points seem to be all over the place. Many less powerful machines are priced much higher than machines with better specs. How does one navigate this market? Are there any unpublished/under-publicized specs/bottlenecks you look for? Understanding that hardware improves over time, is there an efficient ratio that can be used (or something similar, like Windows Experience Index?) which will indicate how powerful a system is? Thanks in advance! P.S. Here is an example from a laptop released on September 17, 2010. Can anyone pick apart these specs? Is there missing information you would be looking for? OS: Win 7 Display: 16.4" LED backlit Processor: Intel Core i7-740QM, 6MB L3 Cache RAM: 6GB DDR3 1333MHz (8GB max.) Graphics: NVIDIA GeForce GT 425M (1 GB of dedicated DDR3) HDD: 500GB 7200RPM SATA Hard Drive Removable Disc: Blue-ray with DVD±R/RW Misc: webcam/mic/speakers/bluetooth (via Sony Vaio VPC-F137FX/B)

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• Is Dell's server software bundle necessary? (Poweredge 2950 in my case)

  - by bwerks

  Hi all, Dell includes a fair amount of software with its servers, but I'm having a hard time determining from the documentation what each of them does, and whether or not I should install it. Dell's support site (unless I'm doing it wrong) seems fairly opaque to me and its offerings fairly unstandardized in terms of their usage, so if possible I'd like to stray away from them. Specifically, I'm curious if any of the features offered are duplicated in something like Microsoft System Center. For additional background information, I'm working with a Poweredge 2950 that was just rebuilt with an expanded raid-6, but initially I just installed Server 2008 R2 directly instead of using the Build and Update utility. There's nothing of use on it at the moment so I'm totally open to wiping it again.

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• 2 subnets off of 1 PC with 2 NICs

  - by Jeff

  I have a general setup I'd like to do with some IP cameras. This seems like it will work but I think I may be missing something. Our system consists of a video recorder PC connected to a switch which is connected to a number of IP cameras. I'd like to connect this system into an existing network but I want it on a different subnet. The main reason is that the cameras use a lot of bandwidth that I don't want slowing down the existing network. My idea was to install 2 NICs on the video recorder pc. 1 NIC connects to the existing network on 192.169.1.x for example, and the other NIC connect to the switch with the cameras. This NIC would be 192.168.100.x. Then we could remote to the video recorder PC with a GoToMyPC type thing for administration via the existing network. I've included a diagram of how I see this working but I'm a little fuzzy on the setup of the NICs (if this can work at all). My problem may be trying to deal with 2 subnets without a router but It really doesn't seem like it's necessary in this situation. BTW, gliffy is cool.

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• IIS virtual location path

  - by Worp

  Sorry in advance, for this seems to be a very noobish question and should be easily fixable, yet I can't work it out: I am setting up windows authentication for a website running on IIS 8.5: The Yii framework of the website takes input like http://localhost/mywebsite/index.php/site/loginand processes it, using the "login" action of the "site" Controller. I flipped on URL Rewrite to have nicer URLs, leaving the URL with /mywebsite/site/login. Now I need to set up windows authentication for this location. Very specifically ONLY for this very exact location. Only the /site/login location of mywebsite needs to have authentication. Every other location needs to have anonymous. Since it is a "virtual location", I don't know how to do it. I can set up win-auth for files, directories, virtual directories, etc. but not for virtual locations that do not map to any file but only to a Controller/Action in Yii. The working counterpart in Apache is but i can't "translate this into IIS". I have read that IIS does have the "~" symbol but I just couldn't make it work yet. Could it be used to achieve authentication on a location basis? I have looked around virtual directories as well, which seem to simply be a kind of "symlink" to actual folders on the harddrive. Can they be used differently to "create a virtual folder in a location that doesn't really exist to manage its properties"? Help is much appreciated.

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• How to configure g-wan to use virtual hosts?

  - by Jan

  Say I have a domain foo.com and a server accessible at 50.60.70.80. I have configured the DNS entries so that foo.com and www.foo.com point to 50.60.70.80. I have g-wan running on the web server. Now I want to host different web sites on foo.com and on www.foo.com. According to the documentation I have to configure a root host and optionally some virtual hosts. So I choose foo.com to be the root host. www.foo.com is a virtual host. My problems is that g-wan seems to ignore my virtual host. No matter whether I use foo.com or ww.foo.com g-wan always serves the foo.com content. This is my g-wan "config": /gwan/0.0.0.0_80/#movq.org /gwan/0.0.0.0_80/$www.movq.org What am I doing wrong here?

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• How to simulate htaccess for auth with IIS without having access to the server config ?

  - by bgy

  Hi, I need to put a website on windows server IIS, i'd like to use basic authentification like i'd do with Apache, with the .htaccess / .htpasswd I read here & there, that i could do this through the admin tabs of IIS, but i'm not the administrator, and i only have ftp access. It seems to be a 'web.config' file where i could do this. Is there a way to set up such things within a config file ? I'm not used to work with IIS...

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• How can I automatically update the title in an xterm running screen?

  - by Nathan Fellman

  This is a bit of a followup to this question. I'm working in tcsh within GNU screen in an xterm. I have the following in my .cshrc: alias res_t 'xtset -t %h:%d "(%u:%g)" %e' # reset titlebar res_t # reset title right now alias precmd res_t And this works fine! However, when I run screen I see that the title doesn't get updated with the current directory. How can I make screen update the xterm title?

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• UTF-8 and !# shell scripts

  - by sal

  Is there a way to configure bash on Linux (red hat and ubuntu) to allow shell scripts to be encoded in UTF-8? I can't find a simple way to change just one little thing and have the whole system just use UTF-8 files without having to worry about encoding.

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• Computers "applying computer settings" for a long time on start-up...why?

  - by tombull89

  Hello. Might be a bit of a slong shot but I'm stumped, along with the ICT Manager for the school I'm working it. In one of the IT rooms when you switch a computer on it will boot through BIOS fine, but when it gets to "applying computer settings" it can hang for a long time (~15 minutes). If you unplug the computer from the network it starts up fine, gets to the login screen, then you can plug the network cable in and it will work fine. I don't think it's anything to do with the fact we've been coming close to running out of IP addresses or a problem with our DHCP. Microsoft KB says apply the latest service pack, which we've done, and check a service. Servers and domian controllers are S2003, Computers and Desktops are XP. Does anybody have any thoughts on what to try?

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• Proper web server setup

  - by DMin

  I just got myself a slicehost basic slice to play around with so I can learn how to setup web-servers. I have Ubuntu 10.04.2 installed on the server. I was able to successfully get the server up and running from scratch, these were the things I did - following this tutorial. I know this is probably just a starters tutorial, so, I was wondering if you guys can tell me what you like to do while setting up production servers. These are the steps that were followed : Update and Upgrade Ubuntu sudo apt-get install apache2 php5-mysql libapache2-mod-php5 mysql-server Backup a copy of and edit apache2.conf Set : 'ServerTokens Full' to 'ServerTokens Prod''ServerSignature On' to 'ServerSignature Off' Backup php.ini and then Change “expose_php = On” to “expose_php = Off” Restart Apache Install Shorewall firewall Configure Shorewall to only accept HTTP and SSH connections(in the rules file) Enable shorewall on startup Add the website to the server : sudo usermod -g www-data root sudo chown -R www-data:www-data /var/www sudo chmod -R 775 /var/www I want make this CommunityWiki but can't seem to find the option to do it. Please feel free to add any feedback on the processes and things I am doing right/wrong. Much appriciated, thanks! :)

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• No Microsoft Security Essentials for Windows 8. So, how to access similar Defender features/settings?

  - by Chris W. Rea

  I just installed Windows 8 Pro. One of the first things I went to do is install Microsoft Security Essentials, thinking I still needed add-on security software, but I've learned here that it isn't required for Windows 8. Witness: Got Windows 8 or Windows RT? Windows Defender for Windows 8 and Windows RT provides the same level of protection against malware as Microsoft Security Essentials. You can't use Microsoft Security Essentials with Windows 8, but you don't need to — Windows Defender is already included and ready to go. [...] All well and good. However, on Windows 7, once you installed Microsoft Security Essentials, you got a tray icon, and from there you could access the features of MSE, such as perform custom scans, turn off real-time protection (temporarily, of course), check for updates, etc. However, Defender on Windows 8 doesn't display a tray icon – and yes, I've already made sure I'm displaying all icons in the notification area. So, how to access the similar specific features of Windows Defender on Windows 8?

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• Simple way to set up port knocking on Linux?

  - by Ace Paus

  There are well known benefits of Port Knocking utilities when utilized in combination with firewall IP table modification. Port Knocking is best used to provide an additional layer of security over other tools such as the OpenSSH server. I would like some help setting it up on a ubuntu server. I looked at some port knocking implementations here: PORTKNOCKING - A system for stealthy authentication across closed ports. IMPLEMENTATIONS http://www.portknocking.org/view/implementations fwknop looked good. I found an Android client here. And fwknop (both client and server) is in the ubuntu repos. Unfortunately, setting it up (on the server) looks difficult. I do not have iptables set up. My proficiency with iptables is limited (but I understand the basics). I'm looking for a series of simple steps to set it up. I only want to open the SSH port in response to a valid knock. Alternatively, I would consider other port knocking implementations, if they are much simpler to set up and the desired Linux and Android clients are available.

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