IP Scanning firewall ports

[poweld1]

I was wondering what firewall ports IP scanning uses as my Lansweeper server is in a DMZ?

I think SNMP uses 161 and 162 but am not sure if anything else is required.

[Hemoco]

Snmp: 161 udp
ftp: 21 tcp
smtp: 25
jetdirect: 9001
ssh: 22
http: 80
https: 443
Sip: 5060