sudo apt install nmap

sudo dnf install nmap

sudo pacman -s nmap

brew install nmap

nmap <host>

~ > % nmap 192.168.1.1
Starting Nmap 7.94 ( https://nmap.org ) at 2023-05-31 10:20 MSK
Nmap scan report for 192.168.1.1
Host is up (0.0027s latency).
Not shown: 993 closed tcp ports (conn-refused)
PORT     STATE SERVICE
53/tcp   open  domain
80/tcp   open  http
443/tcp  open  https

Nmap done: 1 IP address (1 host up) scanned in 7.39 seconds

nmap <host> -p <port>

~ > % nmap 192.168.1.1 -p 9092
Starting Nmap 7.94 ( https://nmap.org ) at 2023-05-31 10:23 MSK
Nmap scan report for 192.168.1.1
Host is up (0.0076s latency).

PORT     STATE  SERVICE
9092/tcp closed XmlIpcRegSvc

Nmap done: 1 IP address (1 host up) scanned in 0.88 seconds