Hi, Kerberos, I think, uses the Needham Schoeder protocol for key exchange. In 1995, Gavin Lowe has found an attack on this protocol. Is Kerberos now insecure, or has this been already patched? Thanks, Chris -- PGP Fingerprint: 633B 47E1 B4AE 6184 2C83 E3DA B800 7BDD 038C 9060