🟨Echo

( TCP/UDP 7 )

ℹ️ Introduction

Echo

A debugging service running on UDP/TCP port 7. once a connection is established any data received is sent back. This continues until the calling user terminates the connection.

No authentication or limitation, it can be used to perform a DoS attack on target system. very old and rare to see from the internet.

nc -uvn <IP> 7