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TCP - Port 22

By isabelle_irani ·
Given my little knowledge of connection technology, a product that I am currently evaluating mentions that the only requirement is: that "it can establish a connection to the server at TCP - Port 22" Can you tell me in layman terms what this means? Also what limitations does this have and what benefits? Thank you!

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TCP - Port 22

by erikdr In reply to TCP - Port 22

TCP/IP is a protocol suite, connecting systems.
Individual applications use specific ports of TCP/IP, 'addresses' or 'frequencies in the radio spectrum'. E.g. a webserver listens on port 80 of the server machine, and your browser checks on that same port 80 whether a server is present.
Now, between client and server there is often some kind of firewall present, which filters out many ports which can be abused by hackers.
So the requirement of your product translates to 'make sure that nowhere in the route between the machines using the product, port 22 is blocked or filtered or used by another application'.
So check this route in your organisation, especially on firewalls. The common TCP/IP books provide a list of commonly used ports (including this 80 I mentioned), maybe 22 is also there which would hint to which apps can cause conflicts.

Hope this helps,
<Erik> / The Netherlands

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TCP - Port 22

by isabelle_irani In reply to TCP - Port 22

Thanks a bunch - great explanation :)

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TCP - Port 22

by isabelle_irani In reply to TCP - Port 22

Thanks a bunch - great explanation :)

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