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