Preview Tool

Cisco Bug: CSCtc41730 - ACS resets SYN packets if MSS isn't set

Last Modified

Feb 22, 2014

Products (1)

  • Cisco Secure Access Control Server Solution Engine

Known Affected Releases

5.0(0) 5.0(0.8)

Description (partial)

TACACS authentication attempts from some devices fail with no response from the ACS. Packet capture shows TCP reset being sent immediately by ACS.

This will occur if the TCP SYN packet doesn't have the MSS option set.
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.