Make UPnP optional for security#339
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nsekulov wants to merge 1 commit intoCitiesSkylinesMultiplayer:masterfrom
Open
Make UPnP optional for security#339nsekulov wants to merge 1 commit intoCitiesSkylinesMultiplayer:masterfrom
nsekulov wants to merge 1 commit intoCitiesSkylinesMultiplayer:masterfrom
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kaenganxt
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Feb 10, 2026
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kaenganxt
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kaenganxt
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Thank you for your contribution! I agree that you should be able to disable UPnP.
But I don't agree that this is a security risk. Having UPnP enabled on your router for all devices in the network might be a security issue as malicious actors could open any port. But opening the CSM port automatically is rather low risk.
Most players are not aware of technical network details and probably don't even know what port forwarding means, so I would like to keep it enabled by default.
Could you please change the defaults to enabled?
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I do not like the fact that UPnP is forced. I play on LAN and don't need to port-forward.