APM cookie - F5_ST

The good news it that this is completely possible. The bad news is that, event with ACCESS::restrict_irule_events disabled, you cannot see the F5_ST cookie being sent to the client from APM. The only way that I know of, and have used, to alter this and the other APM session cookies is to layer an LTM VIP in front of your APM VIP. Your external LTM VIP would consume the addressable IP, the APM VIP could use an inaccessible internal IP/port, and your LTM iRule could rewrite cookie headers in both directions and then send traffic to the APM VIP using the virtual command. I actually just did this for someone else, so let me know if you want to see that iRule.