From: Subba Rao (subb3 at domain ibm.net)
Date: Fri 27 Aug 1999 - 14:09:34 IST
My INPUT chain has the ACCEPT policy, on my linux gateway. This system has
2 interfaces. One is a modem interface (Internet) and the other is a ethernet interface (Intranet).
For the modem interface, I setup the following rules,
$ ipchains -A input -i ppp0 -p 21 -j DENY
$ ipchains -A input -i ppp0 -p 23 -j DENY
$ ipchains -A input -i ppp0 -p 80 -j DENY
My goal in this exercise is to prevent outside telnet, ftp and www access
to my gateway.
From a remote machine(from a different LAN on the Intranet), I can still access these service.
What is wrong with the above rules? What am I doing wrong?
Thanks you in advance for your input.
subb3 at domain ibm.net
Disclaimer - I question and speak for myself.
This archive was generated by hypermail 2.1.6 : Thu 06 Feb 2003 - 13:04:30 GMT