Yes, definately. Don't run NAT on the Router, only use it on the Linux box.
I assume you have a LAN of a few (or more) PCs on the other side of the
Linux box. You will need a cross-over UTP cable (best solution) and then
set it up similiar to this :
Internal PCs (2, 10, 50, 2000)
||||||||||||||||||
Ethernet/FE Switch
|
Linux Internal NIC1 (Inside address)
Linux PC
Linux External NIC2 (Outside address)
X (cross-over cable)
X
Eth 0
1720 Router
WIC 0 WIC 1
I I
I I
PSTN PSTN
Basically, use a switch/hub with your internal PCs hooked up in a LAN
configuration. Plug the Inside IP NIC of the Linux box into that
hub/switch. This completes your internal network.
Use a crossover cable to connect your Outside (Live) IP NIC to the E0 of the
1720 router. This is a separate cable segment, with 2 nodes.. E0, and the
NIC (xl1 or whatever).
As usual, have your 2 WICs connecting the PSTN as they do now.
This is best, as the Linux box now also segments all the broadcast traffic
and "crap" from the LAN side, and blocks that traffic from "sneaking" out
into the "real" world. I have done this several times in the past, and it
works fine.
Regards,
Trevor Corness, CCNA MCSE MCP+Internet
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Shane Stockman
Sent: September 9, 2000 1:43 PM
To: [EMAIL PROTECTED]
Subject: Linux Proxy server and 1700 using NAT
I have a cisco 1720 with 2xISDN WIC cards and a Linux Proxy Server with
2xNIC's. I need to know whether I can use 1 nic for the internal address and
another for the global addresse's given by the ISP using only one ethernet
port of the 1720.
-------- --------
-Proxy--NIC1(Internal) -Router-ISDN WIC 0---|-->PSTN
-Server-NIC2(Outside )---->-Eth0---ISDN WIC 1---|
-------- --------
Sorry for the sketch
I also need to connect the Proxy to a 2924 for 8 users
Is this possible ?
Any Solution
Thanks
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