Why are sockets necessary? Could you please provide an example that would NOT work if sockets were not built into...
transport protocols. Sockets are one of the most basic building blocks of the communication process. Simply stated, a socket is an IP address and a port. Sockets exist within communication domains and allow for bi-directional, reliably, and sequenced data flow. When used in the client/server model, it allows programs such as FTP and Telnet to function properly.
As an example, a Telnet server listens at port 23 for service requests. Telnet will remain inactive until a client connects to the servers IP address. This request would be passed up the stack to the appropriate port (23). At that moment, the server would wake up and perform whatever has been requested by the client.
Therefore, without an IP address, the client would not be able to find the server or without the correct port, the client couldn?t find the need server services.
I hope this brief explanation helps in your understanding of the process.
Dig Deeper on LANs (Local Area Networks)
Related Q&A from Michael Gregg
Enterprise security expert, Michael Gregg answers a question regarding port 3389 issues when a user tries to open port 3389 RDP on their router to ...continue reading
Security expert Michael Gregg notes the risks to enteprise security that mobile devices may cause.continue reading
Expert Michael Gregg answers a reader question about Snort and the interfaces it uses.continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.