router blocking TCP connection to game server

Hey guys

I’m having an issue and it does not look like my ISP either understands the problem or knows how to fix it and i was hoping someone here might be able to help me out.

My question is: I cannot seem to connect to a game server, i have spoken to the Dev and done alot of troubleshooting and it looks like somehow the router is blocking the TCP connection to the game server. How would test to see if it is actually the router blocking the connection?

What i have tested: i checked if i could connect from the other PCs on the network, no luck. i then connected using my phone and that worked so im pretty sure its the router.

MikroTik RouterOS 6.44.5
Please let me know what info i can give to help out.

Regarding the phone test, newer phones seem to behave funny and use mobile data even if WiFi is available but connection through WiFi fails, so it is not a reliable test unless you disable the mobile data.

Regarding the test on the router itself, you have to find out the IP address of the gaming server, open a CLI window on the router, make it as wide as your screen allows, run /tool sniffer quick ip-address=the.ip.of.the.server in that window, and start the game. If packets get through the router, the sniffer will show them at both the LAN interface and at the WAN one. If the router blocks them, you will see them only at LAN interface but not at WAN.

What you stated makes little sense normally.
Outbound traffic from a home is not blocked from an ISP.
Perhaps in your country they prefer their youth/citizenry not to partake in foolish waste of time activities and prefer to have the population outside getting fresh air and exercise.

In any case, I would tend to think you have probably mis-configured your router. Why? Because anybody using an MT product should have a basic grasp of checking if a website is available (ie basic Ping) IP lookup etc. The fact that you have not done this leads me to believe your skills may not be up to configuring the MT.
This is not meant to be a slight or anything, configuring the MT is not easy and their are lots of traps and holes to fall into.

If you could post your config, we should hopefully immediately see anything obvious, otherwise the tests already noted in the previous post by my esteemed and eminently equipped networking genius (sindy) should be done and should point to an ISP issue.

Otherwise
/export hide-sensitive file=anynameyou wish (just ensure wanip and wanip gateway are removed as they are private to you)

winbox, go to terminal, put in the above command
winbox, go to files find file download to desktop, then use notepadd++ to open and paste here, using the code tags (black square white brackets)