X conection Broken [1]

I am trying to connect a pc to a linux machine. When connected directly I have no problem but when I connect thru a router after a while I get 'X Connection to localhost: 10.0 broken (explicit kill or server shutdown)

I'm using SSH.

Please help.
Thank you

Could you let us know the version of Xmanager?
Xmanager 2.0 is the latest version.

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Technical Support