Port Numbers Flashcards
Learn Port Numbers
What port number is DHCP? It automatically assigns an IP address to a device.
udp 67 / udp 68
What port number is SNMP Trap? It receives an interface alert from a switch.
Udp 162
What port number is DNS? It determines the IP address associated with a domain name. Remember (Dad No Salt! You’re ___)
udp/ 53
What port number is SMTP? It transfer messages between two email servers.
tcp 25
What port number is SMB? It can send a job to a windows network printer.
tcp 445
What port number is FTP? It facilities file transfers between computers.
Tcp 20 / tcp 21 remember that Data is 20 and control is 21. (Date? when I was 20 I was partying, until I turned 21 and I got control).
What port number is SSH? It is a secure access to a computer through remote access.
tcp 22, remember that the 22 looks like two backwards S’s.
What port number is Telnet? It provides direct access to remote devices, but is less secure than SSH.
Tcp 23, remember Jordan’s number, and that he hits nothing but net.
What port number is HTTP? It enables communication between web servers and browsers.
tcp 80
What port number is POP3 (Post Office Protocol 3)? It retrieves email from a server to your local devices.
tcp 110, remember that P = 1 and O = 0
What port number is NetBIOS? It allows applications on different computers to communicate and share resources over a local area network (LAN)
udp 137 / udp 139
What port number is IMAP (Internet Message Access Protocol)? It manages and retrieves emails stored on a server.
tcp 143
What port number is SNMP? It is used to monitor and manage devices across a network remotely. SNMP managers use port 161 to send commands to SNMP agents on network devices
udp 161
What port number is LDAP (Lightweight Directory Access Protocol) it provides a way to access and manage directory information, such as user profiles and permissions.
tcp 389
What port number is HTTPS? It encrypts data between web servers and browsers
tcp 443
