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OSI-model

Description

Important

This liste of Ports/Protocols is organized using the OSI model.

If you want a more detailled document go visite osi-model.com

source: b1nary

OSI LAYER 1 - Physical Layer

  • Copper Cables Ethernet cables that transfer electricity pulses to transfer messages.
  • Optical Fiber Glass tube equiped with LED/LASER technologie to transfer light signals
  • Wireless Wireless technologie uses antenas to transfer a signal threw the air.

OSI LAYER 2 - Data Link Layer

  • IEEE 802.3: Defines Ethernet standards.
  • MAC (Media Acces Control): Unique physical ID.
  • ARP (Address Resolution Protocol): Maps IP addresses to MAC addresses.

OSI LAYER 3 - Network Layer

  • IPv4: The fourth version of the Internet Protocol, using 32-bit addresses.
  • IPv6: The sixth version of the Internet Protocol, using 128-bit addresses.

OSI LAYER 4 - Transport Layer

TCP (Transmission Control Protocol):

  • Port 80 - HTTP Used for web traffic.
  • Port 443 - HTTPS Secured version of HTTP.
  • Port 21 - FTP (File Transfer Protocol): Used for file transfers.
  • Port 25 - SMTP (Simple Mail Transfer Protocol): Used for email transmission.
  • Port 110 - POP3 (Post Office Protocol version 3): Retrieves emails from a server.
  • Port 143 - IMAP (Internet Message Access Protocol): Manages and retrieves email messages.

UDP (User Datagram Protocol):

  • Port 53 - DNS (Domain Name System): Resolves domain names to IP addresses.
  • Port 67/68 - DHCP (Dynamic Host Configuration Protocol): Assigns IP addresses dynamically.
  • Port 161/162 - SNMP (Simple Network Management Protocol): Monitors and manages network devices.
  • Port 514 - Syslog: Event logging on a network.

TCP & UDP:

  • Port 414 - InfoSeek: Infoseek was a web search engine that gained popularity in the mid-1990s.

OSI LAYER 5 - Session Layer

  • NetBIOS (Network Basic Input/Output System): Manages sessions and provides session establishment, maintenance, and termination functions.

OSI LAYER 6 - Presentation Layer

  • SSL/TLS (Secure Sockets Layer/Transport Layer Security): Ensures the secure exchange of data by providing encryption and decryption services for application layer protocols.

OSI Layer 7 - Application Layer

  • Port 80 - HTTP (Hypertext Transfer Protocol) Used for transmitting hypermedia.
  • Port 443 - HTTPS (Hypertext Transfer Protocol Secure): A secure version of HTTP.
  • Port 21 - FTP (File Transfer Protocol): Used for transferring files.
  • Port 25 - SMTP (Simple Mail Transfer Protocol): Sends email messages.
  • Port 110 - POP3 (Post Office Protocol version 3): Retrieves emails from a server.
  • Port 143 - IMAP (Internet Message Access Protocol): Manages and retrieves email messages.
  • Port 53 - DNS (Domain Name System): Resolves domain names to IP addresses.
  • Ports 67/68 - DHCP (Dynamic Host Configuration Protocol): Assigns IP addresses dynamically.
  • Ports 161/162 - SNMP (Simple Network Management Protocol): Monitors and manages network devices.
  • Port 514 - Syslog: Event logging on a network.