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Line Messenger

Does anybody know which ports to open to allow the messenger Line?
(LINE : Free Calls & Messages)

So far I figures out that port 11000 UDP needs to be allowed to get the phone ringing. But audio and video still is not getting transferred.

On the homepage of Line, I cannot find any information for firewall set-up. Because "line" is a very general word, my research in the internet was not successful. So far, the only working solution is "allow any" for the specific devices.


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  • Hi there.

    I know, it's kinda late - but I stumbled across the same issue.

    Tried to figure out, which UDP-Port-Range is used - but I had no luck discovering a pattern...

    Helped myself with an rule, allowing UDP-Traffic 1025:65535 from my devices to 125.209.252.0/24 what happens to be the CIDR from Line.

    I found another CIDR on google, 125.209.253.0/24 - but in my case the firewall log told me to use the other range.