The following table lists some potential problems and resolutions you might encounter with the PingAccess agent for SUSE Linux Enterprise Server (SLES).
Agent receives an unknown protocol error when attempting to contact the administrative node
This can indicate that the operating system is using sha1 for encryption. This protocol is no longer supported by default in PingAccess.
We recommend switching to SHA-256. If you cannot switch to SHA-256, you can re-enable SHA-1: