External port scan

Networking & Firewalls
1

Hi all

Looking for a tool/website to do an external scan of a firewall to check what port are open?

2

Spin up a Digital ocean droplet and use nmap.

3 Likes
3

I’ve always liked ShieldsUp for some basic port scanning.

1 Like
4

Also if you are using snort or suracata turn them off or the ip your scanning from will quickly get blocked.

2 Likes
5

For a quick and minimal solution you can try you get signal, it only tests TCP ports but is pretty good.