주요 옵션
-n: 서비스명이 아닌 숫자로 노출-a: 모든 포트 노출-t: TCP 포트만 노출-p: 프로세스도 노출 (root 권한 필요)-s: 통계 정보 출력
주요 출력
Recv-Q : 수신 버퍼에 쌓인 데이터 (바이트)Send-Q : 송신 버퍼에 쌓인 데이터 (바이트)
[jongpak@test-jongpak ~]$ sudo netstat -n -a -t -p
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:65131 0.0.0.0:* LISTEN 120172/./box
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 18696/httpd
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 905/sshd
tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN 18696/httpd
tcp 0 0 127.0.0.1:199 0.0.0.0:* LISTEN 907/snmpd
tcp 0 0 0.0.0.0:27017 0.0.0.0:* LISTEN 135397/mongod
tcp 0 0 0.0.0.0:65130 0.0.0.0:* LISTEN 120172/./box
tcp 0 0 10.113.255.97:43384 10.114.0.220:18000 ESTABLISHED 99131/./box
tcp 0 0 10.113.255.97:37408 10.114.0.219:18000 ESTABLISHED 99131/./box
tcp 0 0 10.113.255.97:37884 10.114.8.45:9973 TIME_WAIT -
tcp 0 0 10.113.255.97:49640 10.118.202.91:14505 ESTABLISHED 37622/python2.7
tcp 0 102 10.113.255.97:543 10.113.130.44:57001 ESTABLISHED 135564/klogind
tcp 0 0 10.113.255.97:56660 10.118.203.103:80 TIME_WAIT -
tcp 0 0 10.113.255.97:45862 10.114.0.221:18000 ESTABLISHED 99131/./box
tcp6 0 0 :::22 :::* LISTEN 905/sshd
tcp6 0 0 :::2105 :::* LISTEN 899/xinetd
tcp6 0 0 :::543 :::* LISTEN 899/xinetd
tcp6 0 0 :::544 :::* LISTEN 899/xinetd