"Server is not responding" Error When Connecting to a Multiplayer Server

[YATf_2003]

Hello, I have recently tried tried playing multiplayer with a friend of mine, but when I connect to his server (or any other server in the Browse public games list) I get an error saying "Server is not responding". Screenshot:

server_is_not_responding_screenshot.png (178.82 KiB) Viewed 1648 times

I don't know if it matters but I play on Ubuntu 20.04, via Steam, the game version is 1.0.0 build 54889.
Thank you.

Edit: for anyone experiencing a similar problem, I found a work-around by changing the port.

[bigmond]

I would guess that it could be a firewall issue.

Can you post your log file.

[YATf_2003]

I'm not sure which log you refer to so I'm attaching both factorio-current.log and factorio-previous.log.

I configured ufw to allow all communication via port 34197.

Thanks for the reply!

[Loewchen]

Server packets reach you way too late or get lost. This is likely causes by network congestion or a general network issue.

[YATf_2003]

Is there anything I can do about it? I do not experience any other network related issues anywhere else...

[bigmond]

Are you on wifi or ethernet, can you do aa speedtest.

Can you do a ping to your router and to a reliable website like google.
Post the results.

Seems your network may be unreliable. Could be local, could be time to call the isp.

[YATf_2003]

Thanks for the help.
I managed to get around the problem, turns out the ISP (or perhaps someone else) blocked Factorio's default port, changing the port solved the problem.