여기에 세 가지 대답이 nmap있지만 접두사 sudo(아무 대답도하지 않음)는 세상의 모든 차이를 발견했습니다.

$ nmap -sP 192.168.1.0/24

Starting Nmap 7.01 ( https://nmap.org ) at 2019-07-13 14:55 MDT
Nmap scan report for 192.168.1.65
Host is up (0.00037s latency).
Nmap scan report for 192.168.1.66
Host is up (0.00035s latency).
Nmap scan report for 192.168.1.67
Host is up (0.00028s latency).
Nmap scan report for 192.168.1.68
Host is up (0.00025s latency).
Nmap scan report for 192.168.1.70
Host is up (0.017s latency).
Nmap scan report for 192.168.1.254
Host is up (0.00070s latency).
Nmap done: 256 IP addresses (6 hosts up) scanned in 6.86 seconds

$ sudo nmap -sP 192.168.1.0/24

Starting Nmap 7.01 ( https://nmap.org ) at 2019-07-13 14:56 MDT
Nmap scan report for 192.168.1.65
Host is up (0.00050s latency).
MAC Address: 99:99:99:99:99:A6 (Unknown)
Nmap scan report for 192.168.1.66
Host is up (0.00016s latency).
MAC Address: 99:99:99:99:99:D9 (Sony)
Nmap scan report for 192.168.1.70
Host is up (-0.087s latency).
MAC Address: 99:99:99:99:99:36 (Unknown)
Nmap scan report for 192.168.1.254
Host is up (0.0020s latency).
MAC Address: 99:99:99:99:99:00 (Actiontec Electronics)
Nmap scan report for 192.168.1.67
Host is up.
Nmap scan report for 192.168.1.68
Host is up.
Nmap done: 256 IP addresses (6 hosts up) scanned in 2.41 seconds

컴퓨터에 코딩 된 IP 주소와 MAC 주소가 아닌 사람이 읽을 수있는 이름을 장치에 표시하는 방법에 대한 프로젝트를 연구하고 있기 때문에이 Q & A를 우연히 발견했습니다.

특히 99:99:99:99:99:36위의 MAC (실제 주소 아님)에 대해 “(알 수 없음)”대신 “Toshiba 43″4K TV “를 표시하려고 합니다.

나중에 로컬 영역 네트워크를지나 인터넷으로 프로젝트를 확장하여 내 컴퓨터가 상호 작용하는 외부 IP 주소를 볼 때 대신 ” 스택 교환 “이 표시 999.999.9.99되거나 ” 우분투 요청 “이 표시됩니다 999.999.9.99.

답변

-sL (List Scan) .
       The list scan is a degenerate form of host discovery that simply lists each host of the network(s) specified, without sending any packets to the target hosts. By default, Nmap still does
       reverse-DNS resolution on the hosts to learn their names.