I have a strange problem on one of my 100D models.
Access to one website is blocked for some reason.
Outside the fortigate the website works so it is an fortigate issue.
When running a packet capture i can see no ACK returning when browsing to this website.
Ofcourse i ran a packet capture outside the fortigate and i can see an ACK so it seems that the firewall is dropping this silently.
I read something about anti-replay and disabled it globally but it has no effect. all extra features like AV, web filtering and ips are all turned off. Basic firewall.
Fortigate 100D is running v5.6.11 build1700 (GA).
Should i update to v6 or do you guys have an idea why this website is blocked?
Thanks in advance!