Unreachable web page
Hello,
We are using M390 with "Fireware OS v12.8.B659436". On the system there 2 network splitted from each other. First one is for guest network with no restriction, second one is for office users with some restrictions such as social networks, gambling and adult contents.
My problem is especially with a single web site. I can not reach the www.seturbiz.com [212.115.29.122] behind the watchguard.
I can open the page on my mobile with mobile data but when i switch to wi-fi connection, connection is cutting off.
When I've check from traffic monitor, can catch only below deny message;
2024-07-12 14:27:23 Deny 192.0.0.208 212.115.29.122 http/tcp 56202 80 LAN Firebox tcp syn checking failed (expecting SYN packet for new TCP connection, but received ACK, FIN, or RST instead). 41 128 (Internal Policy) proc_id="firewall" rc="101" msg_id="3000-0148" tcp_info="offset 5 A 2099127062 win 1040" geo_dst="TUR"
I found some solutions about TCP SYN settings but not worked.
Do you have any other solution advise?
Comments
Try changing the Global setting, Networking section, TCP MTU Probing from Disabled to "Always enabled", and see if that helps.
Define Firebox Global Settings
https://www.watchguard.com/help/docs/help-center/en-US/Content/en-US/Fireware/basicadmin/global_setting_define_c.html