Gateway load balance
wojtek at wojtek.tensor.gdynia.pl
Wed Jun 17 18:14:08 UTC 2009
> Adding 2 more default routes with same weight to each dsl line won't work?
No, because you have to route things beginning from connection 1 subnet
through connection 1, connection 2 subnet through connection 2 etc.
Your idea will result in routing all outgoing traffic randomly through 3
lines. At least with polish telecom it will not work. If you have
connection with say 188.8.131.52/29 subnet, you have to send packets from
And that's proper behaviour, as it blocks spoofing.
> ----- Original Message -----
> From: owner-freebsd-questions at freebsd.org <owner-freebsd-questions at freebsd.org>
> To: FreeBSD Users <freebsd-questions at freebsd.org>
> Sent: Wed Jun 17 12:18:07 2009
> Subject: Gateway load balance
> Hi all
> First time posting.
> I am a long time Linux user (desktop and server) and started with
> FreeBSD a year ago.
> Thanks to the book Absolute FreeBSD 2nd Edition I learned a lot about
> the OS and how to configure different services I used in Linux (Slackware).
> My post is regarding something I couldn't find information on how to
> implement it. Here's the situation:
> I had a proxy server (Squid + Dansguardian) under Slackware on the LAN
> which, via 'ip route' I make it use 3 gateways connected each one to an
> ADSL line and balance the requests.
> Unfortunately my server crashed and I took the oportunity to install a
> new one under FreeBSD 7.0-RELEASE. Squid and Dansguardian are working
> fine. My problem is that I don't know how to make the server use the
> other 2 gateways I have left and balance the requests on all ADSL lines.
> 192.168.10.9/16 proxy
> 192.168.10.2/16 1st gateway (1 NIC to LAN - 2 NIC
> to ADSL modem)
> 192.168.30.100/16 2nd gateway
> 192.168.30.1/16 3rd gateway
> I found it could be done with PF (also read most of The Book of PF) but
> I am quite lost about how to do it.
> Any information would be greatly appreciated.
> Thanks in advance
> Raúl I. Becette
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