Direct routing

[Marcin Jessa]

On Tue, 03 Jan 2006 23:56:15 -0600
Dennis Olvany <dennisolvany at gmail.com> wrote:

> Karel Miklav wrote:
> > I'd like to do something like described on the LVS pages 
> > http://www.linuxvirtualserver.org/VS-DRouting.html, that is route
> > requests to another server and answer from this second server
> > directly to the client. How can I do it on FreeBSD?
> 
> You can use lsnat.
> 
> http://www.enterasys.com/products/whitepapers/load-sharing-nat/
> 
> -redirect_address localIP[,localIP[,...]] publicIP
> 
>  These forms of -redirect_port and -redirect_address are used
>  to transparently offload network load on a single server and
>  distribute the load across a pool of servers.	This function
>  is known as LSNAT (RFC 2391).	For example, the argument
> 
>        tcp www1:http,www2:http,www3:http www:http
> 
>  means that incoming HTTP requests for host www will be trans-
>  parently redirected to one of the www1, www2 or www3, where a
>  host is selected simply on a round-robin basis, without
>  regard to load on the net.
> 
> http://www.freebsd.org/cgi/man.cgi?query=natd

Check also the pf FAQ:
http://www.openbsd.org/faq/pf/pools.html
section "Load Balance Incoming Connections"

Cheers,
Marcin Jessa