Bug ID 431251: IPSEC GUI doesn't support phase1 encrypt alg aes192 or aes256

Last Modified: Jan 07, 2026

Affected Product(s):
BIG-IP LTM(all modules)

Known Affected Versions:
11.5.1, 11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.1 HF10, 11.5.1 HF11, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10

Opened: Sep 20, 2013

Severity: 3-Major

Related Article: K17033

Symptoms

IPSEC GUI doesn't support phase1 encrypt alg aes192 or aes256, that is, those encryption algorithms are not available for selection in the GUI.

Impact

IPSEC GUI doesn't support phase1 encrypt alg aes192 or aes256, that is, those encryption algorithms are not available for selection in the GUI.

Conditions

Always.

Workaround

Configuration is possible using tmsh.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips