Lookout version 1.1 is a Windows tool which raw access to data sent over a TCP connection, allowing the inspection of protocols and the testing of buffers. Lookout connects to a foreign host's port and allows you to communicates with the host. Alternatively, Lookout can listen on a port and wait for another host to connect. Once connected, you can send raw data (including an option for a variable-length string) to the remote host. Screenshot here.
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