# lsof -i:88
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
krb5kdc 36392 root 6u IPv4 306361 0t0 UDP *:kerberos
krb5kdc 36392 root 7u IPv6 306366 0t0 UDP [fe80::21a:4aff:feea:8e9c]:kerberos
krb5kdc 36392 root 8u IPv6 306369 0t0 TCP *:kerberos (LISTEN)
krb5kdc 36392 root 9u IPv4 306370 0t0 TCP *:kerberos (LISTEN)
krb5kdc 36393 root 6u IPv4 306361 0t0 UDP *:kerberos
krb5kdc 36393 root 7u IPv6 306366 0t0 UDP [fe80::21a:4aff:feea:8e9c]:kerberos
krb5kdc 36393 root 8u IPv6 306369 0t0 TCP *:kerberos (LISTEN)
krb5kdc 36393 root 9u IPv4 306370 0t0 TCP *:kerberos (LISTEN)
# lsof -i:389
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
ns-slapd 36344 dirsrv 6u IPv6 306289 0t0 TCP *:ldap (LISTEN)