SSH: Failed to read 1st key exchange packet

Here’s an explanation for the following error message:

    Established TCP/IP connection with SSH server
    FromServer: SSH-1.5-Cisco-1.25
    numBytesRequested: 8
    Connection closed by server.
    Failed to read data on SSH connection.
    Failed to read 1st key exchange packet
    Failed.

The error message indicates that as soon as the TCP/IP socket connection was accepted
by the SSH server, it then decided to disconnect. No data was exchanged over the socket connection. In other words, you didn’t even receive the initial “hello” message.

The SSH server probably rejected the connection based on the IP address from which you’re connecting.