Hello, im new in the linux world, and i want to know how to filtrate trafic for the tcp ports. if posible in the text mode, and in the x mode. thanx for advanced.

see ya!!

in the firewall config u can block ports etc...
u can edit it in xmode and console..
hope that helps ya even if not in gr8 detail...

a good way is also to use iptables. Here is an example on how to block access to port 6000 (the X11 port)

#iptables -A INPUT -p tcp --dport 6000 -j REJECT
#iptables -A INPUT -p udp --dport 6000 -j REJECT

REJECT will send back an icmp message, the default is port unreachable i think, if you exchange REJECT with DROP then they wont get anything back and it will seem as if the computer isnt up at all, atleast based on trying to connect to that port. REJECT is a way of saying "hey bug off".

There are many more things you can do with iptables and i suggest that anyone wanting to secure their machine learn iptables.

also, iptables is for the text mode. you can even do a script file and have it run everytime the computer starts (there is no iptables.conf or anything like that....if there is, i havent found it yet). I put mind in a file called firewall.sh, and i added a line to rc.local..

sh /root/firewall.sh

and my firewall rules get set everytime the machine reboots.

thanx!
i love ip tables

yea me too, it only takes about a day or two to really get good at iptables...im kinda hooked on em.