FTP (File Transfer Protocol)
DNS (Domain Name System)
DHCP (Dynamic Host Configuration Protocol)
TACACS (Terminal Access Control Access Control System)
Telnet
Kerberos
HTTPS (Hyper Text Transfer Protocol Secure)
SSH, SFTP, SCP (Secure Shell, Secure File Transfer Protocol, Secure Copy)
67, 68
88
49
53
443
23
22
20, 21