[pptp-server] Linux NAT support PPTP packet editor/filter?

[tmk]

> Desired:  Linux configuration on PCb with similar functionality.

linux masq + pptp masq module will do exactly this.

> I believe IPsec / L2TP cannot be filtered / edited to pass through
> NAT gateways like PPTP can.... correct me if I'm wrong.  I'd
> prefer to use the more open IPsec standard if it could be made
> to be as transparent as PPTP.

i believe ipsec encrypts everything (that is useful to NAT) but the dest
address, so masq wont do ipsec to my knowledge.

Kevin