![]() ![]() If you are not sure about the proper range to use, this is another discussion with your network team. This assumes we know the network gateway is 10.1.1.1 and the network broadcast address is 10.1.1.255. ![]() In this example, we will be looking for instances in the 10.1.1.2 – 10.1.1.254 range. This is the scan used to detect all available SQL Server instances. -oG -This is great if you want to use the results of the scan to easily report your findings.-sV – This performs the same function as with the TCP scan.-sU – This tells Nmap we’re doing a UDP scan.In our demo -p U:1434 will find named instances. This is great if you want to use the results of the scan to easily report your findings. -oG – This switch isn’t required, but this will put the results from a single IP all on one line.This is what lets us fingerprint a SQL Server when possible. -sV – This switch tells nmap to investigate any open ports it detects to determine if it can find out exactly what service and version is using that port.Therefore, we’ll want to use the -p switch with T:1433 to restrict the scan to that one port. -p – This switch allows you to tell nmap what ports to scan. ![]() Running “Nmap -?” will give you all the details on all the available switches.
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