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Date:      Wed, 9 Jun 1999 21:20:33 -0400
From:      "Adam Breaux" <adam@idomains.net>
To:        <freebsd-questions@FreeBSD.ORG>
Subject:   Firewall With 2 Gateways
Message-ID:  <000f01beb2df$7027cbe0$1e01a8c0@altronics.com>

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I need to setup a machine with the ability to switch between 2 different =
gateways automatically.

The system would need 3 nics ( I assume ).

LAN Interface:=20
    ip: 192.168.1.1=20
    nm: 255.255.255.0

Cable Interface:=20
    ip: 24.x.x.x=20
    nm: 255.255.255.0
    gw: 24.x.x.254

Frame Interface:
    ip: 205.x.x.x
    nm: 255.255.255.224
    gw: 205.x.x.161

Some sort of script that pings a remote host...cable provider's router =
maybe...

When it loses connect, change default gateway to frame.
When cable comes back up, change default gateway to cable.

Any ideas on this? I have a pretty good idea of what is needed but a =
good how-to is=20
certainly in order. Thanks in advance.

Adam Breaux

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content=3D"text/html; charset=3Diso-8859-1" =
http-equiv=3DContent-Type>
<META content=3D"MSHTML 5.00.2314.1000" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>I need to setup a machine with the =
ability to=20
switch between 2 different gateways automatically.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>The system would need 3 nics ( I assume =

).</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>LAN Interface: </FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;&nbsp;&nbsp; ip: 192.168.1.1 =
</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;&nbsp;&nbsp; nm: =
255.255.255.0</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Cable Interface: </FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;&nbsp;&nbsp; ip: 24.x.x.x =
</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;&nbsp;&nbsp; nm: =
255.255.255.0</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;&nbsp;&nbsp; gw: =
24.x.x.254</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Frame Interface:</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;&nbsp;&nbsp; ip: =
205.x.x.x</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;&nbsp;&nbsp; nm: =
255.255.255.224</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;&nbsp;&nbsp; gw: =
205.x.x.161</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Some sort&nbsp;of script that pings a =
remote=20
host...cable provider's router maybe...</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>When it loses connect, change =
</FONT><FONT=20
face=3DArial size=3D2>default gateway to frame.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>When cable comes back up, change =
default gateway to=20
cable.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Any ideas on this? I have a pretty good =
idea of=20
what is needed but a good how-to is </FONT></DIV>
<DIV><FONT face=3DArial size=3D2>certainly in order. Thanks in =
advance.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Adam Breaux</FONT></DIV></BODY></HTML>

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