12345 portunu kullanan programı tesbit edelim
# netstat -anp | grep 12345 tcp 0 0 127.0.0.1:12345 0.0.0.0:* LISTEN 6629/ssh tcp 0 0 ::1:12345 :::* LISTEN 6629/ssh
Aynı bilgiyi lsof kullanarak ta elde edebiliriz:
$lsof -i OMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME sshd 718 root 3u IPv4 4058 0t0 TCP *:ssh (LISTEN) sshd 718 root 4u IPv6 4060 0t0 TCP *:ssh (LISTEN) avahi-dae 744 avahi 13u IPv4 4146 0t0 UDP *:mdns avahi-dae 744 avahi 14u IPv4 4147 0t0 UDP *:49706 cupsd 975 root 6u IPv6 79871 0t0 TCP localhost:ipp (LISTEN) cupsd 975 root 7u IPv4 79872 0t0 TCP localhost:ipp (LISTEN) apache2 1066 root 4u IPv6 4733 0t0 TCP *:www (LISTEN) Xorg 3848 root 1u IPv6 53246 0t0 TCP *:x11 (LISTEN) Xorg 3848 root 3u IPv4 53247 0t0 TCP *:x11 (LISTEN) dhclient 6338 root 5u IPv4 71482 0t0 UDP *:bootpc apache2 7423 www-data 4u IPv6 4733 0t0 TCP *:www (LISTEN) apache2 7424 www-data 4u IPv6 4733 0t0 TCP *:www (LISTEN)
Sadece tcp için
$lsof -i tcp COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME sshd 718 root 3u IPv4 4058 0t0 TCP *:ssh (LISTEN) sshd 718 root 4u IPv6 4060 0t0 TCP *:ssh (LISTEN) cupsd 975 root 6u IPv6 79871 0t0 TCP localhost:ipp (LISTEN) cupsd 975 root 7u IPv4 79872 0t0 TCP localhost:ipp (LISTEN) apache2 1066 root 4u IPv6 4733 0t0 TCP *:www (LISTEN) Xorg 3848 root 1u IPv6 53246 0t0 TCP *:x11 (LISTEN) Xorg 3848 root 3u IPv4 53247 0t0 TCP *:x11 (LISTEN) apache2 7423 www-data 4u IPv6 4733 0t0 TCP *:www (LISTEN) apache2 7424 www-data 4u IPv6 4733 0t0 TCP *:www (LISTEN)
Sadece udp için
$lsof -i udp COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME avahi-dae 744 avahi 13u IPv4 4146 0t0 UDP *:mdns avahi-dae 744 avahi 14u IPv4 4147 0t0 UDP *:49706 dhclient 6338 root 5u IPv4 71482 0t0 UDP *:bootpc
Port numarası ile kullanamak için
$lsof -i tcp:80 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME apache2 1066 root 4u IPv6 4733 0t0 TCP *:www (LISTEN) apache2 7423 www-data 4u IPv6 4733 0t0 TCP *:www (LISTEN) apache2 7424 www-data 4u IPv6 4733 0t0 TCP *:www (LISTEN)
kullanılabilir.
PIDi 6629 olan ssh servisi 12345 portunu kullanmaktadır.
Process hakkında daha fazla bilgi almak için
# ps -efl | grep 6629 4 S root 6629 29716 0 75 0 - 6976 - 14:05 pts/4 00:00:00 ssh testserver -D 12345 -l db2inst1 0 S root 7648 7302 0 78 0 - 742 pipe_w 14:07 pts/7 00:00:00 grep 6629
Netstat ile port analizi.
lsof ile açık dosyaların tesbiti.
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