Bug ID 433664: Performance degrades when using client certificates signed by 4k CA key/certs

Last Modified: Jan 07, 2026

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

Fixed In:
11.6.0

Opened: Oct 11, 2013

Severity: 3-Major

Symptoms

The SSL/TLS performance could be degraded when certificates signed by 4 KB CA keys/certs.

Impact

Using client certificate authentication and using 4k CA key/cert would have performance degrades.

Conditions

SSL/TLS profile, client certificate authentication enabled and the client certificates or the intermediate CA certificates are signed by 4k CA keys/certs.

Workaround

None.

Fix Information

Performance has been improved when using client certificates signed by 4 KB CA key/certs.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips