INFORMATION : IPtables

[royong]

Some worthwhile readings on IPTABLES which are essential for FIREWALLing on Linux servers.

http://www.sns.ias.edu/~jns/security/iptables/
http://iptables-tutorial.frozentux.net/iptables-tutorial.html

Those with other worthwhile links, please feel free to add to the list.

[choon]

I found the following links quite useful when I first started to custom my own firewall script...
http://www.linuxsecurity.com/resource_files/firewalls/IPTables-Tutorial/iptables-tutorial.html
http://www.gege.org/iptables/doc/faq.html
http://www.geocities.com/steve93138/firewall.txt

Hope this helps someone :)

[gravity]

anyone tried http://www.shorewall.net/ ?

[chankle]

I learned about iptables and general Linux security from this book "Linux Server Security" (copies available in the national library). I think it's a good book, lots of useful info in it.

Heard of the shorewall script, haven't tried it tho.

Other scripts and programs worth mentioning:

Bastille (http://www.bastille-linux.org)
User friendly perl script that helps users configure Linux security through a Q&A style. One of the modules deal with firewalls.


Port scanners (nmap , Nessus)
After you've set up your firewall, you might want to use a port scanner to check for any weaknesses (open ports etc) in your system. The book contains info on how to use them.

Hope this info helps.

[serverpoint]

google is the best

[pengfei]

http://www.geocities.com/steve93138/firewall.txt

FYI, this URL no longer valid.

[tanfwc]

FYI, this URL no longer valid.
take a look at the thread time stamp :)

[pengfei]

take a look at the thread time stamp :)

Thanks for yours acknowledgement.