How to build firewall with iptables
 

Can Anybody explain how to build firewall with iptables? And packet forwarding?
MM

Google gave me two good sites as the first hits:
http://blog.adityapatawari.com/2011/...explained.html
http://www.howtogeek.com/177621/the-...inux-firewall/

The iptables website Netfilter has HOWTO's and Guides.

http://www.netfilter.org

Thanks for the information.Normally, what is the routing mechanism used for packet forwarding..

Along with your other thread:
http://www.linuxquestions.org/questi...91#post5303591

..these seem like verbatim homework questions, and you're asking us to answer them for you. Again, you need to SHOW EFFORT of your own. If you have specific problems/questions, we will be happy to help you, but doing basic research is something you need to do for yourself.

Sorry for asking basic questions. I am new to Linux environment and trying to get into Linux and understand internals. The main idea of putting here is if any body can suggest better article or url to learn.

Basic questions are fine, but you are posting what seems to be HOMEWORK questions. Read the LQ Rules and Question Guidelines links in my posting signature.

We will be glad to explain things, but we are NOT going to look things up for you or give you links or articles. You have to do your own research, and show your own effort.