Skip site navigation (1)Skip section navigation (2)
Date:      Sat, 14 Apr 2001 12:01:25 -0400 (EDT)
From:      Johnny Dang <>
To:        FreeBSD IpFW <>
Subject:   Question about DSL and Cable Modem at the same time
Message-ID:  <>

Next in thread | Raw E-Mail | Index | Archive | Help
Hello all,

Happy Easter to all and I really enjoy reading this mailing list. I have a
question about IPFW. Let's say I have a FreeBSD box with two NICs (as
normal people do): xl0 is with @HOME and xl1 is for the LAN
(192.168.1.x). Since Cable is just for speed, I plan to have a DSL line as
a backup and running other services while it is not backup for the
Cable. Can I just add another NIC as xl2? Here is my plan:

xl0=DHCP from Cable
xl1= (DHCPD)

On the rc.conf, command out the xl2 default router, has NATD and
rc.firewall uses the xl0 as its interface. Then when cable is down,
uncommand the entry for xl0, uncommand the xl2 default router, and change
the interface from NATD and rc.firewall xl2; reboot the router. Will it

However, in this way, I cannot use the DSL line (since I have to command
out the default router).. Any other idea? I do not want to add another
box? I just want to add DSL line as the backup (I love the Cable Modem
speed 3M for downloading)....

Thanks for your input
"The instructions said to use Windows 98 or better, 
so I installed FreeBSD...It is working now!..."
Johnny Dang <>
Senior Network Engineer/MCSE + Internet

To Unsubscribe: send mail to
with "unsubscribe freebsd-ipfw" in the body of the message

Want to link to this message? Use this URL: <>