Guideline for picking a static port number for a named instance

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Guideline for picking a static port number for a named instance

seaport

SSCrazy

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April 3, 2015 at 2:22 pm

#296684

Basically the question is, which number should I pick?

Viewing 5 posts - 1 through 4 (of 4 total)

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joshdbguy SSCertifiable Points: 7707 More actions · Answer 1

Up to you but I would consult this page, http://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml, to make sure you aren't using a port that other services/applications use.

seaport SSCrazy Points: 2491 More actions · Answer 2

Thanks.

I did some googling and found out that I can use:

Netstat -ano

to list all listening ports.

Is there a range of ports that are rarely used? I checked my workstation and found no ports with 5 digits and starting with number 3.

joshdbguy SSCertifiable Points: 7707 More actions · Answer 3

seaport (4/3/2015)
Thanks.
I did some googling and found out that I can use:
Netstat -ano
to list all listening ports.
Is there a range of ports that are rarely used? I checked my workstation and found no ports with 5 digits and starting with number 3.

I mean, you have your general well known and used ports like 80, 443, 1433, etc. But depending on your environment you still need to check no matter what. Here's a huge list,

http://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers

seaport SSCrazy Points: 2491 More actions · Answer 4

Thanks.

I think this is what I am looking for from the Wiki link.

"The range 49152–65535 (215+214 to 216-1)—above the registered ports—contains dynamic or private ports that cannot be registered with IANA. This range is used for custom or temporary purposes and for automatic allocation of ephemeral ports."