Cisco Bug: CSCuj02359 - CBAC incorrectly drops TCP RST packet due to RST inside current window
Feb 11, 2016
- Cisco IOS
Known Affected Releases
12.4(15)T6a 15.0(1)M3 15.2(1)T1
Symptom: On an IOS router running CBAC (Context-Based Access Control) Firewall, a legit TCP RST packet may be dropped with the drop reason "RST inside current window TCP". Conditions: This problem only occurs when CEF (Cisco Express Forwarding) is enabled.
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