tcp-options

Hello, Thanks for taking the time to read my post. My post is on enabling/disabling TCP Timestamps. So there is a customer that has had a pentest. One of the results from the test was a low priority item, but I have been asked to address it. <The Item> - TCP timestamp requests enabled - - Server confidentiality impacted. - A remote attacker could possibly determine the amount of time since the computer was last booted. - Fix TCP timestamps are generally only useful for testing, and support for them should be disabled if not needed. <END of Item> So here is my question... I see that I can disable the Global system config item TCP-options (this includes the Timestamps). So as a test, I do the following... # config system global #<global> set tcp-option disable - Now I' m thinking that this shouold be saved, since cfg-save is auto - but upon further review of the config, I see that it is still enabled. When I do a #execute cfg save it tells me that there is no changes. Am I missing something here? How do I disable TCP-options and will anything break if I do it? These sites are using Firewall policy, OSPF/static routing and VPN. Device = Fortigate 60B running 3.00 B730 MR7 Patch1. Thanks for your time and patience. RW