Date: Wed, 08 Nov 2000 12:22:05 +0100 From: Christoph Sold <so@server.i-clue.de> To: Qiang Xu <qxu@surface.ee.uh.edu> Cc: questions@FreeBSD.org Subject: Re: how to make a PC act as a router? Message-ID: <3A09375D.C41516E@i-clue.de> References: <3A08B05E.E72F634A@surface.ee.uh.edu>
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Qiang Xu schrieb:
>
> Dear Sir/Madam:
> I have a question about how to make a PC work as a router.
>
> I want to setup a lab to observe TCP. The lab figure is as
> following. Here is a private network.
>
> --------- --------- ---------
> # | | | | |
> |
> # | a |<======>| r |<======> | b |
> # | | 1 | | 2 | |
> # --------- --------- ---------
> box1.lab router.lab box2.lab
>
> a,b has a NIC; r has 2 NICs, r will work as a router.
>
> I do something at the rc.conf. I add lab.conf at the end.
> following the lab.conf file
>
> #!/bin/sh
> #---------------------------------------------
> # This file initialize the network in the lab
> #---------------------------------------------
>
> case ${hostname} in
> box1.lab)
> network_interfaces="ep0 lo0 vr0"
> ifconfig_vr0="inet 192.168.10.2 netmask 255.255.255.0"
> static_routes="r0"
> route_r0="net 192.168.20.0 192.168.10.1 netmask
> 255.255.255.0"
> ;;
> router.lab)
> network_interfaces="ep0 lo0 vr0 vr1"
> ifconfig_vr0="inet 192.168.10.1 netmask 255.255.255.0"
> ifconfig_vr1="inet 192.168.20.1 netmask 255.255.255.0"
> ;;
> box2.lab)
> network_interfaces="ep0 lo0 vr0"
> ifconfig_vr0="inet 192.168.20.2 netmask 255.255.255.0"
> static_routes="r0"
> route_r0="net 192.168.10.0 192.168.20.1 netmask 255.255.255.0"
> ;;
> esac
>
> I can ping itself in each PC now. but I can not ping the router from
> box1 and box2, neither ping from router to box1,2.
>
> The networkline and NICs are OK.
>
> Could you give me some advice?
Is the router configured as gateway? Either use /stand/sysinstall to
enable routing between interfaces, or copy the line from
/etc/defaults/rc.conf to /etc/rc.conf.
HTH
-Christoph Sold
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