I have just installed Slackware 8.1. I configured my network card´s gateway with the IP of my router. But i couldnt connect to internet. So i thought that maybe slackware is "closed" so i decided to do: #iptables -A INPUT -s 192.168.0.1 (router IP) -p tcp -j ACCEPT but i didnt works neither Somene how could help me?

When you ran netconfig as root, did you tell it to try to auto-detect a network card? If so, did it actually detect one?

Also, by default, there is nothing in Slack''s hosts.allow and hosts.deny files, so that really shouldn''t be a problem, and iptables (or whatever it is called these days) is by default also unconfigured.

So my hunch is it''s something with your net drivers, but that''s just a guess based on knowing nothing else about your situation.

type these two commands and show us the output:
ifconfig
route -n

Don''t listen to me. I''ve had too much coffee.