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You can use 1443, but technically 1443 is a reserved port for another purpose. You may run into issues in the long run. You are better off using >10,000 to avoid any predefined ports.
Is a mistake to use port 1443 for an SQL Server instead of the default port1433.
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Dimitris Krallis
66
Reputation points
Hi! I would like to ask if it is a mistake to use port 1443 for an SQL Server instead of the default port1433?
I use 1443 port in my script, so is it worth it to change it ? and why ?
SQL Server | Other
Accepted answer
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Tom Phillips 17,771 Reputation points2022-04-12T19:22:45.697+00:00 Port 1443 is a registered port. See:
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Dimitris Krallis 66 Reputation points
2022-04-12T15:51:52.753+00:00 What you mean "1443 for another purpose" ?
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AmeliaGu-MSFT 14,006 Reputation points Microsoft External Staff2022-04-13T02:56:12.423+00:00 Hi DimitrisKrallis-8683,
Agree with Tom. And Ports between 1024 and 5000 are not recommended. Because the range of port numbers from 1024 to 49151 are the registered ports, and the operating system will assign ports in this range to services or applications. To avoid potential port conflicts, values above 5000 are therefore used. But in fact, no matter which range, as long as it is a free unused port.
Please also check List of TCP and UDP port numbers.Best Regards,
Amelia
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Dimitris Krallis 66 Reputation points
2022-04-13T12:43:18.603+00:00 Thank you very much both of you for your answers!