hi i am new in linux..i have to configure a firewall server for my office.we r using RHEL5.0,we have public ip for web server and mail server..thats ip also use to connect client system for internet access

Pl see my network arch

--------------------
firewall server |
ext network |
eth1:61.247.253.235|
--------------------
int network |
eth0:192.168.1.1 |
--------------------
|
Internet-->firewall server--->web server 192.168.1.2(website)|--->Clients for access internet(192.168.1.X)

Here my requirement,
1.Web and mail server should be published
2.client can access internet
3.all ports should be closed,when ping in firewall server from outside network.
4.all ports should be closed,when ping in firewall server from inside of network(internet access client) except what i mention particular ip,


now,what should i do?..please help me any body step by step

thanks
aamdevan (aamdevan@gmail.com

See this tutorial on iptables
http://iptables-tutorial.frozentux.n...-tutorial.html

It should help you better understand how it works, and how to configure rules to do what you want. If you have specific problems, please post them back, and we can help you. I doubt anyone is going to write your firewall rules for you, and if they did....*I* certainly wouldn't use them, unless I understood them....

FYI, you DO realize that you just published your network IP addresses out onto the Internet, for anyone to see???