> more specifically, more than one simultenous connection to > the *same* PPTP server from multiple clients. That's a > limitation of any NAT implementation without a PPTP fix up of > some sort. You can connect out to a million *different* PPTP > servers, only once to the same server.
That depends on the NAT implementation, Many:1 udp/tcp NAT will definitely break GRE due to it rewriting a 16 bit source port offset which doesn't exist for GRE. It would IIRC have to rewrite the GRE 'Caller ID' ( ? my terminology may be incorrect) to track multiple sessions. 1:1 static NAT will work to a single destination for PPTP. Greg
