[Techtalk] Firewall script sample

[jhazer at emailko.com]

Can anyone pls. help me to have an overview of how my firewall script will look like with this kind of setup:

Webserver (intranet only)
Mail server            ----> Firewall ---> Internet             
DNS Caching                  Dial-up        
Squid Caching


Werein the webserver, mail server, etc. will be on the same machine. While the firewall and the modem (for dial-up) will be on a separate PC. I realy am confused on how i will set it up. I have read a tutorial about iptables and shamelessly i'm still lost and confused. Lots of questions arises in my mind. Like. How will i configure my firewall to allow mails and forward it to the mail server. Same with DNS and Squid. How will i allow it from the firewall.

I'm really sorry for this newbie question. But i've read a lot of Howto's, from ipmasquerading to iptables and i'm still confused. Hope anyone can guide me. Thank you very much.

-JhAzEr-


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