Last Modified: Sep 13, 2023
Affected Product(s):
BIG-IP All
Known Affected Versions:
11.5.4, 11.5.5, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1
Fixed In:
13.0.0, 12.1.2 HF1, 11.6.3.2, 11.5.6
Opened: Oct 14, 2016 Severity: 2-Critical
BIG-IP entry to SYN cookie mode may not occur even though traffic pattern would dictate that it should.
BIG-IP does not enter SYN cookie mode at the expected time.
Verified accept enabled on a Virtual IP. Large volume of traffic being processed by BIG-IP.
Disable verified accept on all VIP TCP profiles.
BIG-IP correctly enters SYN cookie mode when traffic pattern dictates that it should.