Common Network Ports Flashcards
FTP – File Transfer Protocol Ports?
TCP – Transmission Control Protocol
port/20 (active mode data) and port/21 (control mode data)
• Transfers files between systems
SSH - Secure Shell Port?
TCP – Transmission Control Protocol
Encrypted communication link - port/22
What is Telnet?
TCP/IP port 23; Allows remote login.
Is NOT secure
Telnet Port?
TCP – Transmission Control Protocol
port 23
SMTP - Simple Mail Transfer Protocol Port?
TCP – Transmission Control Protocol
port/25 used to send email server to server
Can be accessed by multiple devices easily
DNS - Domain Name System Port?
UDP – User Datagram Protocol
port/53 serve DNS queries.
HTTP - Hypertext Transfer Protocol Port?
TCP – Transmission Control Protocol
•HTTP - port/80
•application layer protocol
•Web server communication
HTTPS - Hypertext Transfer Protocol Secure Port?
TCP – Transmission Control Protocol
•HTTPS - port/443
•Web server communication with Secure Sockets Layer (SSL) protocol encryption
What is Port 143 for?
used by IMAP4 protocol.
Default Port
Designed to view or download email
Email is stored on server.
What is Port 110 for?
used by POP3 -Post Office Protocol version 3.
Is NOT secure
Designed to download email from server
Email is NOT stored on server.
What is The Purpose of Port 25?
used by SMTP - Simple Mail Transfer Protocol.
Is NOT secure
Designed to send email between servers
Messaging Application Programming Interface (MAPI) usually uses what port?
TCP – Transmission Control Protocol
•port/135
Port 135 is used for what?
Messaging Application Programming Interface (MAPI)
Usually used to communicate with Microsoft Exchange Server.
What port is for Lightweight Directory Access Protocol (LDAP)?
TCP – Transmission Control Protocol
port/389
used for authentication on AD DS Active Directory Domain Service
What port is for Lightweight Directory Access Protocol Secure (LDAP)?
TCP – Transmission Control Protocol
port/636
