Log ip addresses? Does firewall do that?

[gooki1]

Linux newbie.

I want to find out how I can get Linux to log all of the ip addresses that send data to my computer when I am connected to the internet, and what ip addresses my computer sends data to as well. How do I do that with Linux?

[GNU-Fan]

Hello,

yes, you are correct -- this can be done by configuring the firewall.
Linux' firewall is called iptables.

It routes all network traffic packages according to their source and destination and can keep logfiles about them, too.