I have a m0n0 1.22 as pptp server and works fine. The only problem is when
certain users attempt to logon remotely, these client have a linksys WRT54
g5 as gateway. The linksys has the pptp pasthrough enabled, and the users
can connect to others pptp servers. The connection stops in Athenticating
user and password. i think that is a problem with the GRE protocol and NAT,
but not sure.