ports/protocols Flashcards
File Transfer Protocol (FTP)
Port 20/21; insecure file transfer
Secure Shell (SSH)
Port 22; secure remote control of another machine using a text-based environment
Secured File Transfer Protocol (SFTP)
Port 22; secured file transfer
Telnet
Port 23; 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)
Port 53; Converts domain names to ip addresses & ip addresses to domain names
Dynamic Host Control Protocol (DHCP)
Port 67 & 68; Automatic programming of network parameters like assigning ip addresses, subnet mask, default gateway & DNS server
Hypertext Transfer Protocol (HTTP)
Port 80; Used for insecure web browsing
Post Office Protocol Version 3 (POP3)
Port 110, Used for receiving incoming emails
Network Basic Input/Output System (NetBIOS)
Port 137 & 139; Used for file or printing sharing in a Windows network
Internet Mail Application Protocol (IMAP)
Port 143, Newer method of retrieving incoming emails which
improves upon the older POP3
Simple Network Management Protocol (SNMP)
Port 161 & 162; Used to collect data about network devices & 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 as a secured & encrypted version of web browsing (using secure socket layer & transport layer security)
Server Message Block (SMB)
Port 445; Used for Windows file & printer sharing services
