VPN through NAT

[Vince Hoffman]

Hi all,
        At my firm we use checkpoint VPN-1 so our windows laptop users can
access the network from remote locations Clients offices etc etc., I'd like
my Freebsd laptop to be able to do the same but i'm not sure if its possible
as most locations are NATed these days and the only doc on getting
Checkpoint freebsd talking deals with a VPN between two external IPs and the
nets behind them. Has anyone ever tried getting a similar setup as i need,
to work ?

    Thanks
Vince