Un simple paquet à installer : nmap puis

# nmap 172.26.0.1/24

Et la réponse :

Nmap scan report for desktop-kfn0up5.home (172.26.0.2)
Host is up (0.00063s latency).
Not shown: 998 filtered ports
PORT STATE SERVICE
2968/tcp open enpp
5357/tcp open wsdapi
MAC Address: 70:85:C2:4F:76:CB (ASRock Incorporation)

Nmap scan report for pc-167.home (172.26.0.3)
Host is up (0.013s latency).
All 1000 scanned ports on pc-167.home (172.26.0.3) are filtered
MAC Address: 60:6B:FF:28:28:78 (Nintendo)

Nmap scan report for pcmltvwhd94.home (172.26.0.9)
Host is up (0.00036s latency).
Not shown: 997 filtered ports
PORT STATE SERVICE
8080/tcp open http-proxy
8443/tcp open https-alt
9080/tcp closed glrpc
MAC Address: F0:81:75:56:99:0C (Sagemcom Broadband SAS)

Nmap done: 256 IP addresses (3 hosts up) scanned in 13.91 seconds

C'est beau.