Ports and Protocols Flashcards
File Transfer Protocol (FTP)
TCP 20/21, facilitates transfers between computers on a network. Share files with users. Unencrypted. Supports authentication, authorization, and directory browsing.
Secure Shell (SSH)
22, secure tunnel granting access to a computer or server from a remote location
Telnet
23, tool that permits remote access to devices.
Simple Mail Transfer Protocol (SMTP)
25, responsible for sending emails across the internet
Domain Name System (DNS)
53, translate domain names into IP addresses
Dynamic Host Configuration Protocol (DHCP)
67/68, dynamic address allocator for devices on a network
Hypertext Transfer Protocol (HTTP)
80, enables communication between web servers and web browsers
Post Office Protocol 3 (POP3)
110, retrieves emails from server to local device
Network Basic Input/Output System or NetBIOS over TCP/IP (NetBIOS/NetBT)
137/139, provides services related to sharing resources and communication between computers in a local network
Internet Message Access Protocol (IMAP)
143, manages and retrieves emails stored on a server
Simple Network Management Protocol (SNMP)
161/162, monitors and manages devices on a network
Lightweight Directory Access Protocol (LDAP)
389, provides way to access and manage directory information
Hypertext Transfer Protocol Secure (HTTPS)
443, secure version of HTTP encrypting data between web servers and browsers
Server Message Block (SMB) or Common Internet File System (CIFS)
445, allows shared access to files, printers, and other resources on a network
Remote Desktop Protocol (RDP)
3389, allows remote access and control of a computer or server from a different location
