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Cisco Bug: CSCta93979 - ACS 4.2 returns malformed tunnel-password if > 15 characters

Last Modified

Mar 15, 2016

Products (1)

  • Cisco Secure Access Control Server for Windows

Known Affected Releases


Description (partial)


IPSEC devices using isakmp authorization to an ACS server (or external group authentication on
series 3000 concentrators and ASAs) fail to establish phase 1 connection on groups that
have a large isakmp key.


ACS Server 4.2 configured to return "tunnel password" via IETF Attribute 69 for the isakmp group
Configured tunnel password is greater than 15 characters
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  • Status
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