find what process is using what port
Posted: Tue Apr 18, 2023 7:45 pm
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root@VPN:/home/zemerdon# fuser 514/tcp
514/tcp: 5306
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root@VPN:/home/zemerdon# lsof -i :514
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
rsyslogd 5306 root 7u IPv4 60729 0t0 UDP *:syslog
rsyslogd 5306 root 8u IPv6 60730 0t0 UDP *:syslog
rsyslogd 5306 root 9u IPv4 60734 0t0 TCP *:shell (LISTEN)
rsyslogd 5306 root 10u IPv6 60735 0t0 TCP *:shell (LISTEN)
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root@VPN:/home/zemerdon# netstat -lpna | grep 514
tcp 0 0 0.0.0.0:514 0.0.0.0:* LISTEN 5306/rsyslogd
tcp6 0 0 :::514 :::* LISTEN 5306/rsyslogd
udp 0 0 0.0.0.0:514 0.0.0.0:* 5306/rsyslogd
udp6 0 0 :::514 :::* 5306/rsyslogd
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root@VPN:/home/zemerdon# ss -tulnp | grep rsys
udp UNCONN 0 0 0.0.0.0:514 0.0.0.0:* users:(("rsyslogd",pid=5306,fd=7))
udp UNCONN 0 0 [::]:514 [::]:* users:(("rsyslogd",pid=5306,fd=8))
tcp LISTEN 0 25 0.0.0.0:514 0.0.0.0:* users:(("rsyslogd",pid=5306,fd=9))
tcp LISTEN 0 25 [::]:514 [::]:* users:(("rsyslogd",pid=5306,fd=10))