[4011] in linux-net channel archive
Security with PPP, IPFWADM
daemon@ATHENA.MIT.EDU (Joseph Possert)
Tue Aug 13 19:49:42 1996
From: "Joseph Possert" <joseph@voltec.com>
To: linux-net@vger.rutgers.edu
Date: Mon, 12 Aug 1996 10:46:51 -0500
Reply-To: joseph@voltec.com
Hello,
I have a few questions about security. I recently started a PPP
connection between our network & our ISP. This is REALLY good.
Considering the new improvements to the IP Masquerading program.
(My compliments to the programmers of IPFWADM)
However, since my Linux Box is on the net, how can I reject a
Telnet or rlogin session from any IP that isn't on our LAN.
Furthermore, is it possible to have the inetd accept only from our
LAN. This way, I can still keep ping, finger & netstat (which are
involuable to me) and still not compromise our security.
The basic idea here, it that I want information requests from my
network to the Internet to go unimpeded. Yet, I want any Internet
requests to my Linux Box to go unanswered.
Thanks in advance to all who reply,
Joe Possert
joseph@voltec.com
