[root@localhost ~]# lsof -i
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
chronyd 1874 chrony 5u IPv4 17186 0t0 UDP localhost:323
chronyd 1874 chrony 6u IPv6 17187 0t0 UDP localhost:323
sshd 2149 root 3u IPv4 22744 0t0 TCP *:stvp (LISTEN)
sshd 2149 root 4u IPv6 22746 0t0 TCP *:stvp (LISTEN)
memcached 2151 memcached 26u IPv4 20465 0t0 TCP *:memcache (LISTEN)
memcached 2151 memcached 27u IPv6 20466 0t0 TCP *:memcache (LISTEN)
memcached 2151 memcached 28u IPv4 20469 0t0 UDP *:memcache
memcached 2151 memcached 29u IPv6 20470 0t0 UDP *:memcache
memcached 2151 memcached 30u IPv6 28976 0t0 TCP localhost:memcache->localhost:47892 (ESTABLISHED)
pure-ftpd 2159 root 4u IPv4 23843 0t0 TCP *:ftp (LISTEN)
pure-ftpd 2159 root 5u IPv6 23844 0t0 TCP *:ftp (LISTEN)
redis-ser 2167 redis 6u IPv4 22853 0t0 TCP localhost:6379 (LISTEN)
redis-ser 2167 redis 11u IPv4 86251890 0t0 TCP localhost:6379->localhost:41722 (ESTABLISHED)
varnishd 2215 varnish 3u IPv4 25823 0t0 TCP *:xfer (LISTEN)
varnishd 2215 varnish 5u IPv6 25824 0t0 TCP *:xfer (LISTEN)
varnishd 2215 varnish 9u IPv4 23320 0t0 TCP localhost:6082 (LISTEN)
mysqld 2382 mysql 21u IPv6 22189 0t0 TCP *:mysql (LISTEN)
dovecot 2506 root 17u IPv4 24730 0t0 TCP *:sieve (LISTEN)
dovecot 2506 root 28u IPv4 24748 0t0 TCP *:pop3 (LISTEN)
dovecot 2506 root 29u IPv4 24749 0t0 TCP *:pop3s (LISTEN)
dovecot 2506 root 41u IPv4 24772 0t0 TCP *:imap (LISTEN)
dovecot 2506 root 42u IPv4 24773 0t0 TCP *:imaps (LISTEN)
master 2669 root 13u IPv4 24865 0t0 TCP *:smtp (LISTEN)
master 2669 root 17u IPv4 24868 0t0 TCP *:submission (LISTEN)
master 2669 root 20u IPv4 24871 0t0 TCP *:urd (LISTEN)
master 2669 root 101u IPv4 24951 0t0 TCP localhost:10025 (LISTEN)
cache-mai 2856 varnish 3u IPv4 25823 0t0 TCP *:xfer (LISTEN)
cache-mai 2856 varnish 5u IPv6 25824 0t0 TCP *:xfer (LISTEN)
named 3104 named 21u IPv4 26120 0t0 TCP localhost:domain (LISTEN)
named 3104 named 22u IPv4 26122 0t0 TCP localhost.localdomain:domain (LISTEN)
named 3104 named 23u IPv6 26124 0t0 TCP localhost:domain (LISTEN)
named 3104 named 24u IPv4 26857 0t0 TCP localhost:rndc (LISTEN)
named 3104 named 25u IPv6 26858 0t0 TCP localhost:rndc (LISTEN)
named 3104 named 512u IPv4 26856 0t0 UDP localhost:domain
named 3104 named 513u IPv4 26856 0t0 UDP localhost:domain
named 3104 named 514u IPv4 26856 0t0 UDP localhost:domain
named 3104 named 515u IPv4 26856 0t0 UDP localhost:domain
named 3104 named 516u IPv4 26856 0t0 UDP localhost:domain
named 3104 named 517u IPv4 26856 0t0 UDP localhost:domain
named 3104 named 518u IPv4 26856 0t0 UDP localhost:domain
named 3104 named 519u IPv4 26121 0t0 UDP localhost.localdomain:domain
named 3104 named 520u IPv4 26121 0t0 UDP localhost.localdomain:domain
named 3104 named 521u IPv4 26121 0t0 UDP localhost.localdomain:domain
named 3104 named 522u IPv4 26121 0t0 UDP localhost.localdomain:domain
named 3104 named 523u IPv4 26121 0t0 UDP localhost.localdomain:domain
named 3104 named 524u IPv4 26121 0t0 UDP localhost.localdomain:domain
named 3104 named 525u IPv4 26121 0t0 UDP localhost.localdomain:domain
named 3104 named 526u IPv6 26123 0t0 UDP localhost:domain
named 3104 named 527u IPv6 26123 0t0 UDP localhost:domain
named 3104 named 528u IPv6 26123 0t0 UDP localhost:domain
named 3104 named 529u IPv6 26123 0t0 UDP localhost:domain
named 3104 named 530u IPv6 26123 0t0 UDP localhost:domain
named 3104 named 531u IPv6 26123 0t0 UDP localhost:domain
named 3104 named 532u IPv6 26123 0t0 UDP localhost:domain
netdata 3308 netdata 11u IPv6 30967 0t0 UDP localhost:8125
netdata 3308 netdata 14u IPv4 30968 0t0 UDP localhost:8125
netdata 3308 netdata 15u IPv4 30969 0t0 UDP localhost:8125
netdata 3308 netdata 16u IPv6 30973 0t0 TCP localhost:8125 (LISTEN)
netdata 3308 netdata 17u IPv4 30974 0t0 TCP localhost:8125 (LISTEN)
netdata 3308 netdata 18u IPv4 30975 0t0 TCP localhost:8125 (LISTEN)
python 3342 netdata 6u IPv6 22340 0t0 TCP localhost:47892->localhost:memcache (ESTABLISHED)
python 3342 netdata 15u IPv4 86251884 0t0 TCP localhost:41722->localhost:6379 (ESTABLISHED)
smtpd 23160 postfix 6u IPv4 24871 0t0 TCP *:urd (LISTEN)
local 23590 postfix 17u IPv4 86555479 0t0 UDP *:44853
sshd 32968 root 3u IPv4 84751035 0t0 TCP localhost.localdomain:stvp->*.196.69:44180 (ESTABLISHED)
cwpsrv 39394 root 6u IPv4 69140922 0t0 TCP *:device2 (LISTEN)
cwpsrv 39394 root 7u IPv4 69140923 0t0 TCP *:gnunet (LISTEN)
cwpsrv 39394 root 8u IPv4 69140924 0t0 TCP *:mobrien-chat (LISTEN)
cwpsrv 39394 root 9u IPv4 69140925 0t0 TCP *:eli (LISTEN)
cwpsrv 39394 root 10u IPv4 69140926 0t0 TCP localhost:binderysupport (LISTEN)
cwpsrv 39394 root 11u IPv4 69140927 0t0 TCP *:infowave (LISTEN)
cwpsrv 39394 root 12u IPv4 69140928 0t0 TCP *:radsec (LISTEN)
cwpsrv 39394 root 13u IPv4 69140929 0t0 TCP *:nbx-ser (LISTEN)
cwpsrv 39394 root 14u IPv4 69140930 0t0 TCP *:nbx-dir (LISTEN)
cwpsrv 39455 root 6u IPv4 69140922 0t0 TCP *:device2 (LISTEN)
cwpsrv 39455 root 7u IPv4 69140923 0t0 TCP *:gnunet (LISTEN)
cwpsrv 39455 root 8u IPv4 69140924 0t0 TCP *:mobrien-chat (LISTEN)
cwpsrv 39455 root 9u IPv4 69140925 0t0 TCP *:eli (LISTEN)
cwpsrv 39455 root 10u IPv4 69140926 0t0 TCP localhost:binderysupport (LISTEN)
cwpsrv 39455 root 11u IPv4 69140927 0t0 TCP *:infowave (LISTEN)
cwpsrv 39455 root 12u IPv4 69140928 0t0 TCP *:radsec (LISTEN)
cwpsrv 39455 root 13u IPv4 69140929 0t0 TCP *:nbx-ser (LISTEN)
cwpsrv 39455 root 14u IPv4 69140930 0t0 TCP *:nbx-dir (LISTEN)
cwpsrv 39456 root 6u IPv4 69140922 0t0 TCP *:device2 (LISTEN)
cwpsrv 39456 root 7u IPv4 69140923 0t0 TCP *:gnunet (LISTEN)
cwpsrv 39456 root 8u IPv4 69140924 0t0 TCP *:mobrien-chat (LISTEN)
cwpsrv 39456 root 9u IPv4 69140925 0t0 TCP *:eli (LISTEN)
cwpsrv 39456 root 10u IPv4 69140926 0t0 TCP localhost:binderysupport (LISTEN)
cwpsrv 39456 root 11u IPv4 69140927 0t0 TCP *:infowave (LISTEN)
cwpsrv 39456 root 12u IPv4 69140928 0t0 TCP *:radsec (LISTEN)
cwpsrv 39456 root 13u IPv4 69140929 0t0 TCP *:nbx-ser (LISTEN)
cwpsrv 39456 root 14u IPv4 69140930 0t0 TCP *:nbx-dir (LISTEN)
sshd 62434 root 3u IPv4 85989401 0t0 TCP localhost.localdomain:stvp->*196.69:54102 (ESTABLISHED)
smtpd 65198 postfix 6u IPv4 24865 0t0 TCP *:smtp (LISTEN)