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Protocols

Common Protocols and their Functions

QuestionAnswer
What ports and protocol is used for FTP? What is FTP? 20 & 21 - TCP - File Transfer Protocol - Used to exchange and manipulate files
What ports and protocol is used for SSH? What is SSH? 22 - TCP - Secure Shell - allows data to be exchaned using a secure channel between two network devices.
What ports and protocol is used for SMTP? What is SMTP? 25 - TCP - Simple Mailing Transfer Protocol - Used for SENDING Mail
What ports and protocol is used for TACACS? What is TACACS? 49 - Terminal Access Controller Access-Control System - remote authetication protocol that is used to communicate with an authenticaiton server. Commonly used in UNIX networks.
What ports and protocol is used for DNS? What is DNS? 53 - TCP & UDP - Domain Naming System - serves as a 'phone book' for the network by translating human-friendly node names into IP addresses
What ports and protocol is used for DHCP? What is DHCP? 67 & 68 - UDP - Dynamic Host Configuration Protocol - used by hosts to retrieve IP address assignments and other configuration information.
What ports and protocol is used for SNMP? What is SNMP? 161 - UDP - Simple Network Management Protocol - used in network management system to monitor network attached devices.
What ports and protocol is used for Kerberos? What is Kerberos? 500 - UDP - A network authentication protocol designed to provide strong authentication for client/server application by using secret-key cryptography.
What ports and protocol is used for L2TP? What is L2TP? 1701 - UDP - L2TP - Layer 2 Tunneling Protocol - used to support virtual private networks. It relies on an encryptio protocol that is passed within the tunnel to provide privacy.
What ports and protocol is used for HTTP? What is HTTP? 80 - TCP - Hypertext Transfer Protocol - used to retrieve inter-linked resources called hyper text documents.
What ports and protocol is used for POP? What is POP? 110 - TCP - Post Office Protocol - used for receiving email
What ports and protocol is used for IMAP? What is IMAP? 143 - TCP - Internet Message Access Protocol - used for receiving email
What ports and protocol is used for HTTPS? What is HTTPS? 443 - TCP - Hypertext Transfer Protocol Secure - creates a secure channel over an insecure network.
What ports and protocol is used for RDP? What is RDP? 3389 - TCP - Remote Desktop Protocol - provides graphical interface to another computer.
What ports and protocol is used for LDAP? What is LDAP? 389 - TCP - Lightweight Directory Access Protocol - for querying and modifying directory services.
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