faster performance in apache, httpd, enable disk cache

To enable a disk cache, edit the following section in httpd.conf.

##########################

CacheEnable disk /
CacheRoot "/var/www/dir_name"
CacheDefaultExpire 3600

#########################

Where "dir_name" is the directory to be cached.

How to backup entire moodle site

Plz see the YouTube Video ---

MAC Address Filtering with iptables

Plz follow the post below----
http://adminwithlinux.blogspot.com/2008/08/packet-filtering-using-mac-address-in.html

Packet filtering using MAC address in Linux iptables

A host can be blocked by its MAC address.
Linux "iptables" with mac modules loaded.
A simple configuration is given below ----
iptables -A INPUT -m mac --mac-source 00:17:31:D0:76:9C -j DROP
This will block any request fro the MAC address 00:17:31:D0:76:9C.

Automatic timeout from Linux Shell after some second of inactivity

Yes this can be done using TMOUT variable in /etc/profile file.
Add the following lines at the end of the file.
TMOUT=600
export TMOUT
This will automatically logout the opened session after 10min (10*60=600sec).

Use SARG with Apache on Fedora to Analysis Squid access log from a remote location

SARG is a powerful tool to analyse and to generator report from Squid access log.
Report can be generated in HTML format and it can be viewed from an Apache Web server easily.
To install sarg use the command "yum install sarg"
To use sarg, the command is sarg. Configuration file is "/etc/sarg/sarg.conf".
See the man pages of sarg for varoius options.
Once the report has been generated, I can place the report file(s) on Apache DocumentRoot.
Then can view it from a remote location.

Can not connect to Vncserver on Fedora 7 from Windows

On Fedora Server check whether vnc-server has been installed or not, using the command: rpm -qagrep "vnc"
If not, install it. Installation command "yum install vnc-server".
Not start vncserver. Command: vncserver
Try to connect from windows. Command: vncviewer IP_ADDRESS:1
If fails, check your Firewall settings. The port 5901 must be unblocked.
Configure Firewall using iptables to unblock the port 5901.
This will solve the problem.