Ports Flashcards
20, 21
FTP (File Transfer Protocol)
Provides insecure file transfers
22
SSH (Secure Shell)
Provides secure remote control of another machine using a text-based environment.
SFTP (Secure File Transfer Protocol)
Provides Secure File Transfers
23
Telnet
Provides insecure remote control of another machine using a text-based environment
25
SMTP (Simple Mail Transfer Protocol)
Provides the ability to send emails over the network
53
DNS (Domain Name Service)
Converts domain names to IP addresses, and IP addresses to domain names.
67, 68
DHCP (Dynamic Host Configuration Protocol)
Automatically provides network parameters, like IPs, subnet mask, default gateway, and the DNS server
69
TFTP (Trivial File Transfer Protocol)
A connectionless protocol that uses UDP as its transport
80
HTTP (Hyper Text Transfer Protocol)
Used for insecure web browsing
110
POP3 (Post Office Protocol Version Three)
Used for receiving incoming emails
137, 139
NetBIOS (Network Basic Input/Output System)
Used for file or printer sharing in a Windows network
143
IMAP (Internet Mail Application Protocol)
A new method of retrieving incoming emails which improves upon POP3
161, 162
SNMP (Simple Network Management Protocol)
Used to collect data about network devices and monitor their status
389
LDAP (Lightweight Directory Access Protocol)
Used to provide directory services to your network
443
HTTPS (Hypertext Transfer Protocol - Secure)
Used as a secure and encrypted version of web browsing
445
SMB (Server Message Block)
Used for Windows file and printer sharing services
