Port Numbers Flashcards
What is FTP? What is it’s port number?
TCP 20 and 21
File Transfer Protocol (used for file transfers)
What is SSH? What is it’s port number?
TCP 22
Secure Shell Protocol (Allows encrypted communication. Used for secure remote access and file transfers).
What is TELNET? What is it’s port number?
TCP 23
(Allows unencrypted communication. Used for unsecure remote access).
What is SMTP? What is it’s port number?
TCP 25
Simple Mail Transfer Protocol (Used for E-mail delivery. Abused by scam marketers).
What is DNS? What is it’s port number?
TCP/UDP 53
Domain Name System (Used for host name resolution)
What is DHCP? What is it’s port number?
TCP 67 and 68
Dynamic Host Configuration Protocol (Used for IP address assignment).
What is HTTP/HTTPS? What is it’s port number?
TCP 80 and 443
Hyper Text Transfer Protocol/Secure Hyper Text Transfer Protocol (Used to access web content)
What is POP3? What is it’s port number?
TCP 110
Post-Office Protocol (Used for E-mail download).
What is SMB? What is it’s port number?
TCP 137-139 and 445
Server Message Block (Used for Windows file sharing. It can be abused.)
Also called CIFS (Common internet File System). CIFS is the newer name for it, but most people still say SMB.
What is IMAP? What is it’s port number?
TCP 143
Internet Message Access Protocol (Used for sending and receiving E-mails).
What is SNMP? What is it’s port number?
161 and 162
Simple Network Management Protocol (Used for Network Device Management.)
What is LDAP? What is it’s port number?
389 and 636
Light-weight Directory Access Protocol (Active directory services)(Active directory lets you manage entities like users and machines).
What is AFP? What is it’s port number?
427 and 548
Apple Filing Protocol (Used to be used for file sharing on apple computers. Now they use SMB).
What is RDP? What is it’s port number?
3389
Remote Desktop Protocol (Used for remote desktop sharing)
