Ports & Protocols Flashcards
FTP (File Transfer Protocol)
Port 20 & 21
Provides insecure file transfers
SFTP (Secure File Transfer Protocol)
Port 22
Provides secure file transfer
SSH (Secure Shell)
Port 22
Provides secure remote control of another machine using a text based environment
Telnet
Port 23
Provides insecure remote control of another machine using a text-based environment
Simple Mail Transfer Protocol (SMTP)
Port 25
Provides the ability to send emails over the network
DNS (Domain Name Service)
Port 53
Converts domain names to IP addresses, and IP addresses to domain names
DHCP (Dynamic Host Configuration Protocol)
Ports 67 & 68
Automatically provides network parameters to your clients, such as assigned IP address, subnet mask, default gateway, and the DNS server they should use
TFTP (Trivial File Transfer Protocol)
Port 69
Used as a lightweight file transfer method for sending configuration files or network booting of an operating system
HTTP (Hypertext Transfer Protocol)
Port 80
Used for insecure web browsing
POP3 (Post Office Protocol Version Three)
Port 110
Used for receiving incoming emails
NTP (Network Time Protocol)
Port 123
Used to keep accurate time for clients on a network
NetBIOS (Network Basic Input/Output System)
Port 139
Used for file or printer sharing in a Windows network
IMAP (Internet Mail Application Protocol)
Port 143
A newer method of retrieving incoming emails which improves upon the older POP3
SNMP (Simple Network Management Protocol)
Port 161, 162
Used to collect data about network devices and monitor their status
LDAP (Lightweight Directory Access Protocol)
Port 389
Used to provide directory services to your network
HTTPS (Hypertext Transfer Protocol - Secure)
Port 443
Used for secure web browsing via SSL (Secure Socket Layer) or TLS (Transport Layer Security)
SMB (Server Message Block)
Port 445
Used for windows file and printer sharing services
Syslog (System Logging Protocol)
Port 514
Used to send logging data back to a centralized server
SMTP TLS (Simple Mail Transfer Protocol Transport Layer Security)
Port 587
Secure and encrypted way to send emails
LDAPS (Lightweight Directory Access Protocol - Secure)
Port 636
Provides secure directory services
IMAP over SSL (Internet Message Access Protocol over SSL)
Port 993
Secure and encrypted way to receive emails
POP3 over SSL (Post Office Protocol V3 over SSL)
Port 995
Secure and encrypted way to receive emails
SQL (Structured Query Language Server Protocol)
Port 1433
Used for communication from a client to the database engine
SQLnet Protocol
Port 1521
Used for communication from a client to an Oracle database
MySQL
Port 3306
Used for communication from a client to the MySQL database engine
RDP (Remote Desktop Protocol)
Port 3389
Provides graphical remote control of another client or server
SIP (Session Initiation Protocol)
Port 5060, 5061
Used to initiate VoIP and video calls
