General Informations Online Notebook

#!/bin/bash RESTART="/sbin/service httpd restart" PGREP="/usr/bin/pgrep" HTTPD="httpd" $PGREP ${HTTPD} if [ $? -ne 0 ] # if apache not running then $RESTART fi

Can't load Perl module Apache::compat for server Can't locate Apache/compat.pm in @INC (@INC contains: /usr/lib/perl5/site_perl/5.8.8/i386-linux-thread-multi /usr/lib/perl5/site_perl/5.8.8 /usr/lib/perl5/site_perl /usr/lib/perl5/vendor_perl/5.8.8/i386-linux-thread-multi /usr/lib/perl5/vendor_perl/5.8.8 /usr/lib/perl5/vendor_perl /usr/lib/perl5/5.8.8/i386-linux-thread-multi /usr/lib/perl5/5.8.8 . /etc/httpd) at (eval 2) line 3.\n Go to directory $ cd /usr/lib/perl5/vendor_perl/5.8.8/i386-linux-thread-multi Rename the folders $ mv Apache -> ApacheOld $ mv Apache2 -> Apache

dd if=/dev/zero of=file.img bs=1M conv=notrunc count=1 seek=5000   # 5GB losetup /dev/loop1 file.img #loop1 had to be used as xen was already running a different domU via loop0. e2fsck -f /dev/loop1 resize2fs /dev/loop1 e2fsck -f /dev/loop1 losetup -d /dev/loop1       5GB

How to instal modsecurity in centos $ yum install modsecurity ( use atomic repo or other repository dont compile ) Download the base rules on modsecurity official site extract it in /etc/httpd/modsecurity/ Edit your /etc/httpd/conf.d/00-modsec (some file like this) add the path of the folder of the standard base rules just copy the existing path and edit restart apache $ service httpd restart This will block almost all sql so if you have a website like oscommerce, joomla, wordpress be sure to edit the rules, I haven't so I cant put it here :)

Caching-only name servers are servers not authoritative for any domains except 0.0.127.in-addr.arpa , the localhost. A caching-only name server can look up names inside and outside your zone, as can primary and slave name servers. The difference is that when a caching-only name server initially looks up a name within your zone, it ends up asking one of the primary or slave names servers for your zone for the answer. http://www.faqs.org/docs/securing/chap21sec164.html How To: Configure Caching Nameserver (named)   The necessary files to setup a simple caching name server are: named.conf db.127.0.0 db.cache named script To configure the /etc/named.conf file for a simple caching name server, use this for all servers that dont act as a master or slave name server. Setting up a simple caching server for local client machines will reduce the load on the network's primary server. Many users on dialup connections may use this configurati...

On terminal go super user $ su - $ palimpsest

Directory Description bin Essential command binaries boot Static files of the boot loader dev Device files etc Host-specific system configuration lib Essential shared libraries and kernel modules media Mount point for removable media mnt Mount point for mounting a filesystem temporarily opt Add-on application software packages sbin Essential system binaries srv Data for services provided by this system tmp Temporary files usr Secondary hierarchy var Variable data