Studied by 22 people
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File Transfer Protocol (FTP)
20/21
Secure Shell (SSH)
22
Secure File Transfer Protocol (SFTP)
22
Telnet
23
Simple Mail Transfer Protocol (SMTP)
25
Domain Name System (DNS)
53
Dynamic Host Configuration Protocol (DHCP)
67/68
Trivial File Transfer Protocol (TFTP)
69
Hypertext Transfer Protocol (HTTP)
80
Post Office Protocol v3 (POP3)
110
Network Time Protocol (NTP)
123
Internet Message Access Protocol (IMAP)
143
Simple Network Management Protocol (SNMP)
161/162
Lightweight Directory Access Protocol (LDAP)
389
Hypertext Transfer Protocol Secure (HTTPS) [Secure Sockets Layer (SSL)] HTTPS [Transport Layer Security (TLS)]
443
Server Message Block (SMB)
445
Syslog
514
SMTP TLS
587
Lightweight Directory Access Protocol (over SSL) (LDAPS)
636
IMAP over SSL
993
POP3 over SSL
995
Structured Query Language (SQL) Server
1433
SQLnet
1521
MySQL
3306
Remote Desktop Protocol (RDP)
3389
Session Initiation Protocol (SIP)
5060/5061
Note 
Flashcard (245)