Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP TMOS
Known Affected Versions:
14.1.4.4, 14.1.4.2, 14.1.4.1, 14.1.4, 14.1.3.1, 14.1.3
Fixed In:
17.1.0, 16.1.2.2, 15.1.4
Opened: Feb 11, 2021 Severity: 3-Major
On particular platforms, virtual servers do not correctly enter hardware SYN cookie mode. Software SYN cookie mode still functions correctly.
Software SYN cookies are enabled, this has a performance impact compared to the hardware mode.
-- Virtual server under SYN flood attack. -- One of the following platforms + BIG-IP i11000 series (C123) + BIG-IP i15000 series (D116)
None
Virtual servers correctly enter hardware SYN cookie mode on all platforms.