Load balancing firewall with ubuntu server

[carlopmart]

Hi all,

  Somebody knows a good tutorial or howto where explains how to setup a load 
balancing/failover firewall with ubuntu?? Is it possible to do it?? I need the 
same funcionalities as carp with pf does 
(http://www.openbsd.org/cgi-bin/man.cgi?query=carp&apropos=0&sektion=0&manpath=OpenBSD+Current&arch=i386&format=html) 
but using ubuntu.

many thanks.

-- 
CL Martinez
carlopmart {at} gmail {d0t} com