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Unable to Use Telnet Because Firewall is Blocking "System"

RalphMalph

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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    Sorry for the mistake, I thought you were from Sophos. 

    I found the telnet.exe app and added it's checksum, so the messages are not being blocked by the firewall any longer.  Turns out telnet.exe is hidden by Windows Explorer even though I have hide system files turned off.  Silly Windows...  I had to do a search of the entire Windows directory and it showed up in the search results. 

    Even though the messages are being passed by the firewall something is still wrong.  I don't know much about networking, so I'm not doing too well debugging this. 

    Thanks for the help.

    :48638
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    Sorry for the mistake, I thought you were from Sophos. 

    I found the telnet.exe app and added it's checksum, so the messages are not being blocked by the firewall any longer.  Turns out telnet.exe is hidden by Windows Explorer even though I have hide system files turned off.  Silly Windows...  I had to do a search of the entire Windows directory and it showed up in the search results. 

    Even though the messages are being passed by the firewall something is still wrong.  I don't know much about networking, so I'm not doing too well debugging this. 

    Thanks for the help.

    :48638
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