[CentOS] Internet Load Balancing and Failover

David G. Mackay mackay_d at bellsouth.net
Sun Feb 24 22:03:29 UTC 2008


On Sun, 2008-02-24 at 09:39 -0800, nate wrote:
> Shawn Everett wrote:
> > Hi All,
> >
> > Does anyone have any experience connecting two or more DSL/Cable modems to
> > a Linux box to provide load balancing and failover?
> 
> I haven't tried this on linux but it appears trivial in OpenBSD:
> http://www.openbsd.org/faq/pf/pools.html#outgoing
> 
> I personally prefer OpenBSD for firewalls/gateways over Linux.
> I love linux for pretty much all purposes except firewalls/gateways,
> and I don't use OpenBSD for anything other than firewalls/gateways.
> Mainly because of packet filter(pf), it's a wonderful tool.
> 
> I tried looking at some documentation for iptables for doing the
> same thing but it was pretty vague. I didn't notice anything
> similar to what pf can do in the document above. Closest I found
> was:
> http://www.netfilter.org/documentation/HOWTO//NAT-HOWTO-6.html#ss6.3

I did this a couple of years ago with dsl and a cable modem.  Take a
look at the Adv-Routing-HOWTO on tldp.org.

Dave





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