Matching Pairs Ports 2/4Online version Another portion of common ports by Garry Kelso 1 POP3 2 DNS name queries 3 SNMP trap 4 HTTP 5 SNMP 6 TFTP 7 Kerberos 8 DNS zone transfers TCP 80 TCP 110 UDP 88 UDP 161 UDP 53 TCP 53 UDP 69 UDP 162