From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jerry Amundson Date: Fri, 18 Jul 2003 17:13:19 +0000 Subject: [LARTC] Dual T1's and firewalls/Nat, Help? Message-Id: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lartc@vger.kernel.org Hi. I'm new to these tools, but well versed in Linux and networking, and I just haven't found out some general stuff by going through the HOWTO's! We have two (2) Internet T1's (different providers), each connected to individual routers (one a Cisco, the other an Adtran, if it matters), which are kept apart from the internal networks by two (2) Cisco PIX firewall devices. The latter do NAT/PAT, in addition to normal network protection. One (1) firewall/T1 is currently "primary" as it is the Default Gateway for everything inside. My *goal* is to put a Linux router in place as the Default Gateway to be redundant and load balance across the T1's. Q1: I'm in the right place, right? :-) Q2: Assuming I am in the right place, the part I don't understand is how to fit the Linux router in with the existing firewalls. In a picture, we have: ---------------------- - DMZ1 ISP1 - R1 -ONet1-Firewall1-| - INet1 <-> [internal NIC, Default Gateway] ISP2 - R2 -ONet2-Firewall2-- DMZ2 And what we would like: ----------------------- - DMZ1 ISP1 - R1 -ONet1-Firewall1-| - INet1 -| | | Linux Router | <-> [new Gateway] ISP2 - R2 -ONet2-Firewall2-- DMZ2 ---| | I can revisit the HOWTO's, and many fine sites referenced in this list, but I wanted to make sure I was on the right track... Please be gentle - I don't even know what the abbreviations tc, htb, or imq mean, yet!! Thanks, jerry _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/