Nmap to find MS SQL server

I’ve had to install several instance of SLQ Express recently and for the life of me I’m having a devil of a time getting external access to these instances.  Between the firewalls and SLQ networking protocols it’s hard to know if you did everything right and will be able to connect remotely with these installations.  Nmap can help, here is the syntax to look for them:

nmap -p T:1433 -sV pds-web -oG tcp_scan_results.txt

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