Networking Protocols and Ports

DHCP Server - A network protocol used to automatically assign IP addresses to devices on a network.

Port 67 (UDP)

DHCP Client - A network protocol used by a client to request IP configuration from a server.

Port 68 (UDP)

NTP - A protocol used to synchronize the clocks of computer systems over packet-switched data networks.

Port 123 (UDP)

SNMP Query - A protocol used for managing and monitoring network devices and their functions.

Port 161 (UDP)

SNMP Trap - A protocol mechanism used by network devices to send unsolicited alerts to a management system.

Port 162 (UDP)

LDAP - A protocol used for accessing and maintaining distributed directory information services.

Port 389 (TCP/UDP)

LDAPS - A secure version of LDAP that uses SSL or TLS for encrypted directory access.

Port 626 (TCP/UDP, secured with SSL/TLS)

SMB - A network file sharing protocol used for providing shared access to files, printers, and serial ports.

Port 446 (TCP)

SIP (Unsecure) - A signaling protocol used for initiating, maintaining, and terminating real-time communication sessions.

Port 5060 (TCP/UDP)

SIP (Secure) - A secure version of the SIP signaling protocol using TLS for encrypted communication.

Port 5061 (TCP/UDP, secured with TLS)

Syslog - A standard protocol for sending system log messages across an IP network.

Port 514 (UDP/TCP)

PTP Event - A protocol used to synchronize clocks throughout a computer network with high precision.

Port 319 (UDP)

PTP General - A protocol used for general clock synchronization messages in a precision time network.

Port 320 (UDP)

NTS - A secure extension of NTP that provides cryptographic security for time synchronization.

Port 4460 (TCP/UDP, secured with TLS)

HTTP - An application protocol for distributed, collaborative, and hypermedia information systems.

Port 80 (TCP)

HTTPS - A secure extension of HTTP that uses SSL or TLS for encrypted web communication.

Port 443 (TCP, secured with SSL/TLS)

FTP Data - A protocol used for transferring file data between a client and a server.

Port 20 (TCP)

FTP Control - A protocol used for sending control commands and establishing the FTP session.

Port 21 (TCP)

SSH - A cryptographic network protocol for operating network services securely over an unsecured network.

Port 22 (TCP, secured with encryption)

Telnet - An application protocol used for bidirectional interactive text-oriented communications.

Port 23 (TCP, unencrypted)

SMTP - An internet standard protocol for transmitting electronic mail.

Port 25 (TCP)

DNS - A hierarchical decentralized naming system for computers, services, or other resources connected to the internet.

Port 53 (TCP/UDP)

POP3 - An application layer protocol used by email clients to retrieve emails from a mail server.

Port 110 (TCP)

IMAP - An internet standard protocol used by email clients to retrieve email messages from a mail server.

Port 143 (TCP)

RDP - A proprietary protocol developed by Microsoft that provides a user interface to another computer.

Port 3389 (TCP/UDP)