1.1 Common Ports Flashcards
Memorize port numbers and uses (24 cards)
Port 20
FTP - File Transfer Protocol
Data transmission
Port 21
FTP - File Transfer Protocol
Control information
Port 22
SSH
Secure shell
Port 23
Telnet protocol
Unencrypted text messages
Port 25
SMTP
Simple Mail Transfer Protocol
Used for email routing between mail servers
Port 37
Time Protocol
Port 42
Host Name Server Protocol
Port 43
WHOIS protocol
Port 49
TACACS Login Host Protocol
Terminal Access Controller Access Control System
Port 53
DNS
Domain Name System
Port 80
HTTP
Hypertext Transfer Protocol
Port 88
Kerberos authentication system
Port 109
POP2
Post Office Protocol, Version 2
Port 110
POP3
Post Office Protocol, Version 3
Port 123
NTP
Network Time Protocol, used for time synchronization
Port 143
IMAP
Internet Message Access Protocol
Management of electronic mail messages on a server
Port 443
HTTPs
Hypertext Transfer Protocol over TLS/SSL (Transport Layer Security and Secure Sockets Layer)
Port 995
POP3s
Post Office Protocol version 3 over TLS/SSL
Port 5432
PostgreSQL database system
Port 5938
TeamViewer Remote Desktop Protocol
Port 389
LDAP
Lightweight Directory Access Protocol
Port 115
SFTP
Simple File Transfer Protocol
Port 118
SQL Services
Port 156
SQL Server
