<pptp-username> terminating .Encryption negotation rejected

Hi,

I started to get this strange message in the log:

terminating .Encryption negotation rejected
but if I reconnect, it works fine .. again after some time, i get this message and it disconnects.

So what could cause a connected PPTP connection to re-negotiate encryption setting ?

and 2nd, is it possible to change the PPTP port to something else ?

Thanks,

PPTP uses GRE and TCP. You can use use dst-nat to change the tcp port.