ZMTP
Nmap discovered ZMTP servers on the target ports 4505 and 4506
The running service is ZeroMQ ZMTP 2.0
ZeroMQ is an asynchronous messaging library, aimed at use in distributed or concurrent applications. It provides a message queue, but unlike message-oriented middleware, a ZeroMQ system can run without a dedicated message broker; the zero in the name is for zero broker. The library’s API is designed to resemble Berkeley sockets.
ZeroMQ implements ZMTP, the ZeroMQ Message Transfer Protocol. ZMTP defines rules for backward interoperability, extensible security mechanisms, command and message framing, connection metadata, and other transport-level functionality. A growing number of projects implement ZMTP directly as an alternative to using the full ZeroMQ implementations.
┌──(kali㉿kali)-[~/PEN-200/PG_PRACTICE/twiggy]
└─$ nc -nv $IP 4505
(UNKNOWN) [192.168.113.62] 4505 (?) open
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┌──(kali㉿kali)-[~/PEN-200/PG_PRACTICE/twiggy]
└─$ nc -nv $IP 4506
(UNKNOWN) [192.168.113.62] 4506 (?) open
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~N/A