Firewall/Router Loadbalancing/Failover Cluster - how?

hi

currently we are using SuSE 8.x and firewall2 as your major firewall
software (maybe no good idea - please let me know). Now i'm planing to
implement a failover/loadbalancing cluster. how is this possible and what is
the best? i'm reading about wackamole and vrrpd and finaly about
Stonegate... i don't know if it is possible with wackamole to create a
router loadbalancing/failover or if this is only possible with vrrpd. i
cannot find any ready-to-run firewall with IP based traffic accounting -
therefor i think we must run on SuSE or RedHat in near future, too. this
ones gives me the chance to install "bwacct" and mysql for doing this good
IP accounting job...

what will be the best way to cluster two boxes? is there any easy way - with
loadbalancing or is there only a failover possible?


Alex