Secure VPN Connection terminated by Peer.
Reason 433: Reason Not Specified by Peer
I ran into this error recently when trying to set up a Remote Access VPN. This error could be caused by multiple problems. However, in my particular case, it was the settings under AAA authentication servers. Upon connection the VPN client would prompt for logon credentials and then immediately return this error.
In my environment I was using a Windows Server 2003 Domain Controller for LDAP authentication. The VPN termination point was an older PIX 515 firewall running IOS 8.0. I was also using the latest Cisco VPN client on Windows 8.1.
After some quick troubleshooting it appeared that the domain account used to query LDAP was either buried too deep in the OU structure, or, some of the OU names were causing problems (they had spaces and special characters). [Read more…] about Cisco VPN – Reason 433: Reason Not Specified by Peer.