VPN client Error: 433: (Reason Not Specified by Peer)
How are your users authenticating? Are you using the LOCAL user database on the Cisco ASA itself? Or are you using a AAA authentication server, such as IAS or LDAP?
In my particular case all my users were getting error 433. I was authenticating against a Microsoft LDAP server. I think the Logon DN path had some characters Cisco couldn't comprehend. I moved the Logon Account to a different OU and it fixed it. Here are the details.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...