linux server problems

[Arlo]

So I'm running gentoo, and had a couple questions

1. As long as I specify the port, does it matter if i'm running a webserver on the same ip?

2. When I try to extract the server it says "B requires argument, try tar --help"
I'm currently running an emerge world, because i haven't in ages, but i doubt this is the problem.

Thanx for the help!
~Arlo

[ScP]

1. It doesn't matter as long as you choose another tcp port.
2. Try "tar xvfj <FILE>".

[guldi]

you can run many service under the same IP address unless they don't try to listen on the same port.