IPADDR_START=216.73.xxx.xxx
IPADDR_END=216.73.xxx.xxx
CLONENUM_START=0
NETMAST=255.255.255.0


Name file ifcfg-eth0-range0 (or whatever the nic card is)
Also The start IP address is the 2nd ip address in the list, the End is the last of them.

Yes I stole this script/borrowed from Calpop. Actually one of the most useful things I got out of there.

Scripts that come in handy.

Server e-mail every time someone logs in as root

To have the server e-mail you every time someone logs in as root, SSH into server and login as root.

At command prompt type: vi .bash_profile

Scroll down to the end of the file and add the following line:

echo 'ALERT - Root Shell Access on:' `date` `who` | mail -s "Alert: Root Access from `who | awk '{print $6}'`" your@email.com

Save and exit.

Install chkrootkit

To install chrootkit, SSH into server and login as root.

At command prompt type: cd /root/

At command prompt type: wget ftp://ftp.pangeia.com.br/pub/seg/pac/chkrootkit.tar.gz

At command prompt type: tar xvzf chkrootkit.tar.gz

At command prompt type: cd chkrootkit-0.44

At command prompt type: make sense


To run chkrootkit

At command prompt type: /root/chkrootkit-0.44/chkrootkit

Make sure you run it on a regular basis, perhaps including it in a cron job.
Chkrootkit is a program that scans for root kits.


To modify LogWatch, SSH into server and login as root.

At command prompt type: vi /etc/log.d/conf/logwatch.conf


Scroll down to

MailTo = root

and change to

Mailto = your@email.com

Note: Set the e-mail address to an offsite account incase you get hacked.


Now scroll down to

Detail = Low

Change that to Medium, or High...

Detail = 5 or Detail = 10

Note: High will give you more detailed logs with all actions.