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LINUX: ip masquerading

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5 replies

by grossbaf

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Having seen a Linux box configured as a firewall, using IPCHAINS, I would like to understand what a line like this means:

prot expire source destination ports
TCP 00:12:75 123.100.1.2 205.229.43.186 2348 (62049) -> www

This line comes from the ipchains - L command and is under IP masquerading entries.
Thanks

5 replies

by mwb

ipchains -L does not list settings, rather it is listing the current state of masquerading. Protocol, expire, source, dest, & ports are column headings. So this entry is showing a TCP port open from one IP address to another with http traffic running through it with an expire timer (decrementing or incrementing-I don't know)which will close the port for the source IP's session when the expire timer is up. That's as much as I know.

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