Ports and Protocols Flashcards
File Transfer Protocol (FTP)
Ports 20, 21; provides insecure file transfers
Secure Shell (SSH)
Port 22; provides secure remote control of another machine using a text-based environment
Secure File Transfer Protocol (SFTP)
Port 22; provides secure file transfers
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
Domain Name Service (DNS)
Converts domain names to IP addresses, and IP addresses to names
Dynamic Host Control Protocol (DHCP)
Ports 67, 68; Automatically provides network parameters to your clients, such as their assigned IP address, subnet mask, default gateway, and the DNS server they should use
Trivial File Transfer Protocol (TFTP)
Port 69; Used as a lightweight file transfer method for sending configuration files or network booting of an operating system
Hypertext Transfer Protocol (HTTP)
Port 80; Used for insecure web browsing
Post Office Protocol Version Three (POP3)
Port 110; used for receiving incoming emails
Network Time Protocol (NTP)
Port 123; used to keep accurate time for clients on a network
Network Basic Input/Output System (NetBIOS)
Port 139; Used for file or printer sharing in a Windows Network
Internet Mail Application Protocol (IMAP)
Port 143; a newer method of retrieving incoming emails which improves upon the older POP3
Simple Network Management Protocol (SNMP)
Ports 161, 162; Used to collect data about network devices and monitor their status
Lightweight Directory Access Protocol (LDAP)
Port 389; used to provide directory services to your network
Hypertext Transfer Protocol - Secure (HTTPS)
Port 443; used for secure web browsing
Server Message Block (SMB)
Port 445; used for Windows file and printer sharing services
System Logging Protocol (Syslog)
Port 514; used to send logging data back to a centralized server
Simple Mail Transfer Protocol Transport Layer Security (SMTP TLS)
Port 587; secure and encrypted way to send emails
Lightweight Directory Access Protocol - Secure (LDAPS)
Port 636; provides secure directory services
Internet Message Access Protocol over SSL (IMAP over SSL)
Port 993; secure and encrypted way to receive emails
Post Office Protocol Version 3 over SSL (POP3 over SSL)
Port 995; Secure and encrypted way to receive emails
Structure Query Language Server Protocol (SQL)
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; open source and used for communication from a client to the MySQL database engine
Remote Desktop Protocol (RDP)
Port 3389; Provides graphical remote control of another client or server
Session Initiation Protocol (SIP)
Ports 5060, 5061; used to initiate VoIP and video calls
