Dynamic Good Guys. But it's presently only up to Vicibox 6.0.4 so installation will require some tweaks (there's a post on the board with changes).
However: You don't actually require full installation ... you can just use the lockdown instructions available and add "Allowed IPs" directly in yast firewall's "Custom" section to allow good IPs and Ranges.
DGG is free on Viciwiki.com
Also: This is a support request, not a general discussion. Moving to the support board.
Good job posting your specs, BTW