netstatコマンドのインストール
# apt install net-tools利用方法
# netstat -ltupn
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:1883 0.0.0.0:* LISTEN 4709/docker-proxy
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 701/sshd: /usr/sbin
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 1/init
tcp 0 0 0.0.0.0:8123 0.0.0.0:* LISTEN 4451/python3
tcp 0 0 192.0.2.235:40000 0.0.0.0:* LISTEN 4451/python3
tcp 0 0 0.0.0.0:9001 0.0.0.0:* LISTEN 4687/docker-proxy
tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN 626/systemd-resolve
tcp6 0 0 :::1883 :::* LISTEN 4716/docker-proxy
tcp6 0 0 fe80::4004:4004:4004:40000 :::* LISTEN 4451/python3
tcp6 0 0 :::22 :::* LISTEN 701/sshd: /usr/sbin
tcp6 0 0 :::111 :::* LISTEN 1/init
tcp6 0 0 :::8123 :::* LISTEN 4451/python3
tcp6 0 0 :::9001 :::* LISTEN 4694/docker-proxy
udp 0 0 0.0.0.0:41085 0.0.0.0:* 4451/python3
udp 0 0 127.0.0.53:53 0.0.0.0:* 626/systemd-resolve
udp 0 0 0.0.0.0:111 0.0.0.0:* 1/init
udp 0 0 127.0.0.1:323 0.0.0.0:* 744/chronyd
udp 0 0 0.0.0.0:1900 0.0.0.0:* 4451/python3
udp 0 0 0.0.0.0:1900 0.0.0.0:* 4451/python3
udp 0 0 0.0.0.0:53179 0.0.0.0:* 4451/python3
udp 0 0 192.0.2.235:5353 0.0.0.0:* 4451/python3
udp 0 0 0.0.0.0:55749 0.0.0.0:* 4451/python3
udp6 0 0 :::40934 :::* 4451/python3
udp6 0 0 :::111 :::* 1/init
udp6 0 0 ::1:323 :::* 744/chronyd
udp6 0 0 fe80::6809:6809:6809:546 :::* 624/systemd-network
udp6 0 0 :::1900 :::* 4451/python3
udp6 0 0 :::1900 :::* 4451/python3
udp6 0 0 :::53346 :::* 4451/python3
udp6 0 0 :::5353 :::* 4451/python3
udp6 0 0 fe80::8086:8086:8086:5353 :::* 4451/python3
udp6 0 0 :::38674 :::* 4451/python3以下のコマンドでも代用可能。スーパーユーザ権限が必要。
# ss -lntun
Netid State Recv-Q Send-Q Local Address:Port Peer Address:Port Process
udp UNCONN 0 0 0.0.0.0:41085 0.0.0.0:*
udp UNCONN 0 0 127.0.0.53%lo:53 0.0.0.0:*
udp UNCONN 0 0 0.0.0.0:111 0.0.0.0:*
udp UNCONN 0 0 127.0.0.1:323 0.0.0.0:*
udp UNCONN 0 0 0.0.0.0:1900 0.0.0.0:*
udp UNCONN 0 0 0.0.0.0:1900 0.0.0.0:*
udp UNCONN 0 0 0.0.0.0:53179 0.0.0.0:*
udp UNCONN 0 0 192.0.2.235:5353 0.0.0.0:*
udp UNCONN 0 0 0.0.0.0:55749 0.0.0.0:*
udp UNCONN 0 0 *:40934 *:*
udp UNCONN 0 0 [::]:111 [::]:*
udp UNCONN 0 0 [::1]:323 [::]:*
udp UNCONN 0 0 [fe80::6809:6809:6809:6809]%eno1:546 [::]:*
udp UNCONN 0 0 *:1900 *:*
udp UNCONN 0 0 *:1900 *:*
udp UNCONN 0 0 *:53346 *:*
udp UNCONN 0 0 *:5353 *:*
udp UNCONN 0 0 [fe80::8086:8086:8086:8086]%eno1:5353 [::]:*
udp UNCONN 0 0 *:38674 *:*
tcp LISTEN 0 4096 127.0.0.53%lo:53 0.0.0.0:*
tcp LISTEN 0 128 0.0.0.0:22 0.0.0.0:*
tcp LISTEN 0 4096 0.0.0.0:1883 0.0.0.0:*
tcp LISTEN 0 128 0.0.0.0:8123 0.0.0.0:*
tcp LISTEN 0 128 192.0.2.235:40000 0.0.0.0:*
tcp LISTEN 0 4096 0.0.0.0:9001 0.0.0.0:*
tcp LISTEN 0 4096 0.0.0.0:111 0.0.0.0:*
tcp LISTEN 0 128 [::]:22 [::]:*
tcp LISTEN 0 4096 [::]:1883 [::]:*
tcp LISTEN 0 128 [::]:8123 [::]:*
tcp LISTEN 0 128 [fe80::4004:4004:4004:4004]%eno1:40000 [::]:*
tcp LISTEN 0 4096 [::]:9001 [::]:*
tcp LISTEN 0 4096 [::]:111 [::]:*
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