Matching Pairs Network ProtocolsOnline version CompTIA A+ Common Network Protocols by Joe King 1 AFP 2 SLP 3 SMB 4 DNS 5 SNMP 6 DHCP 7 SSH 8 LDAP UDP/161 TCP/548 TCP/427 UDP/427 UDP/67-68 TCP/445 TCP/22 TCP/389 UDP/389 UDP/53