This quite common that mod_security is interfering the functions of your web applications. mod_security is installed and enabled by your web server admin but you can still disable it for your individual website using .htaccess file by following this tutorial.
Disable mod_security in .htaccess file
If you do not have one yet, an .htaccess file in [...]
To perform a redirect from domain.com to www.domain.com, insert the following code into your .htaccess file.
# mod_rewrite in use
Options +FollowSymlinks
RewriteEngine On
RewriteCond %{http_host} ^domain.com [NC]
RewriteRule ^(.*)$ http://www.domain.com/$1 [R=301,L]
To perform a redirect from www site to non-www site, use the following code in .htaccess file.
# mod_rewrite in use
Options +FollowSymLinks
RewriteEngine on
RewriteCond %{HTTP_HOST} .
RewriteCond %{HTTP_HOST} !^domain\.com
RewriteRule (.*) http://domain.com/$1 [R=301, [...]
Using NTP (Network Time Protocol)
NTP will connect to a server to get the atomic time. It can be downloaded from www.ntp.org/downloads.html To get started with NTP simply download it, install it, use the ntpdate command followed by a public time server, and update your hardware clock.
$ntpdate pool.ntp.org
23 Feb 22:43:53 ntpdate[21751]: [...]
go into your httpd.conf (example for redhax/centos: /etc/httpd/conf/httpd.conf)
setting two apache directives: ServerTokens and ServerSignature . Basically to provide only a minimal amount of information we will set this in the main config to:
ServerTokens ProductOnly
ServerSignature Off
after this, restart your apache (/etc/init.d/httpd restart)
Linux (console) tools to check cpu usage:
vmstat 5
wiki for vmstat, vmstat(8)
top
Get Java Development kit. Depends the version you downloaded, the latest version I got as updated 27th Sept 2007 is jdk-1_5_0_12-linux-i586-rpm.bin.
make the file executable, then install it:
chmod 777 jdk-1_5_0_12-linux-i586.bin
./jdk-1_5_12-linux-i586.bin
after install, go into the installed java folder :
cd /usr/java/jdk1.5.0_12
download the apache-tomcat (Please refer to the latest version of apache-tomcat website)
wget http://download.nextag.com/apache/tomcat/tomcat-5/v5.5.25/bin/apache-tomcat-5.5.25.zip
unzip apache-tomcat-5.5.25.zip
go into theapache-tomcat installed folder, [...]
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