What is a Port in IT terms not the famous one in Liverpool England !

Port numbers in computer networking represent communication endpoints. Ports are unsigned 16-bit integers (0-65535) that identify a specific process, or network service. IANA is responsible for internet protocol resources, including the registration of commonly used port numbers for well-known internet services.
Well Known Ports: 0 through 1023.
Registered Ports: 1024 through 49151.
Dynamic/Private : 49152 through 65535.

So starting from today we will go through each Port number and what it is used for etc.

What is Port 7?

What are the Details of this?

The ICP – Internet Caching Protocol – This protocol is used by HTTP caching proxies in order to coordinate working together in a cluster.

The protocol that enables caches to communicate with one another.

Part of this implementation includes bouncing packets off the echo port in order to test if the peers are alive.

And that brings us to the subject of the Echo and not the fella shouting for the famous newspaper on Church Street in Liverpool [Liverpool Echo]

  • One echo service is defined as a connection based application on TCP.
  • A server listens for TCP connections on TCP port 7. 
  • Once a connection is established any data received is sent back.
  • This continues until the calling user terminates the connection.

Need more? Then check out the rest of our explanations on this excellent subject of #Ports #ISO27001 #Security #Echo #Liverpool

January 2021

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