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I understand that a SQL server named instance will default to dynamic ports, and I know HOW to change that to a static IP:

BUT, I'm still wondering what that dynamic range will be?

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up vote 5 down vote accepted

It's not a range as such. It uses 1433 by default.

If you're referring to the dynamic port range for TCP/UDP, it is 49152–65535. Refer to wikipedia's list of TCP/UDP ports for more info. I don't know if this is of any relevance to your question though.

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A single default instance will use 1433, but clustered or named instances use the sql browsing service to arbitrate the port number to clients, but I need to know what port range that could in order to open them on the internal firewall. – Dave Jul 2 '10 at 14:51

Quick Joe Smith is correct about the range, check out this link.

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Thanks Jason, agreed. – Dave Jul 2 '10 at 19:51

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