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Unable to Use Telnet Because Firewall is Blocking "System"

I am trying to use a telnet connection between a custom app and a terminal emulator and Sophos Firewall blocks the connection saying invalid checksum for "system".  I have no idea how to add a checksum for "system".  What is this trying to tell me?

:48470


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  • Hello RalphMalph,

    your support for Win 8 ... Why is interactive mode not available under Win 8?

    I'm not Sophos :smileyhappy:. Guess there's not (yet) a reliable way to make it work with the new UI architecture.

    Christian

    :48614
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  • Hello RalphMalph,

    your support for Win 8 ... Why is interactive mode not available under Win 8?

    I'm not Sophos :smileyhappy:. Guess there's not (yet) a reliable way to make it work with the new UI architecture.

    Christian

    :48614
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