ZyXEL Communications Prestige 100WH - Manual (Page 68)

Prestige 100WH Internet Access Router
4-8 Chapter 4 Remote Node Configuration
4.2 Outgoing Authentication Protocol
Generally speaking, you should employ the strongest authentication protocol possible, for
obvious reasons. However, some vendor’s implementation includes specific authentication
protocol in the user profile. It will disconnect if the negotiated protocol is different from that
in the user profile, even when the negotiated protocol is stronger than specified. If you
encounter the case where the peer disconnects right after a successful authentication, please
make sure that you specify the correct authentication protocol when connecting to such an
implementation.