nmap to scan specific ports on specific list of IPs

Question

I am using nmap to scan all open ports on all IPs connected with local network.

I want to check specific ports on a list of IPs which is being picked from a text file.

Is it possible to specify a list of ports along with a list of IPs?

I'm looking for something like this:

nmap (specfic ports) -sS -iL ip_list.txt

Answer 1

You can use -p:

nmap -p80,443 -sS -iL ip_list.txt

From the documentation:

-p : Only scan specified ports Ex: -p22; -p1-65535; -p U:53,111,137,T:21-25,80,139,8080,S:9

If you just want the open ports, you can add --open:

nmap -p80,443 --open -sS -iL ip_list.txt