🪴 Anil's Garden

Networking and Computer Networks

12 Sept 20255 min read

See also Compression, Encoding, Codecs, Text Encodings and Communication

Tools

  • MAC Address Lookup - dnschecker.org
  • nslookup - query Internet name servers interactively
  • https://ipinfo.io/ - usable as e.g. curl -s ipinfo.io/$ip/country or any of the fields that appear on an IP’s page (example with 45.134.26.79)
  • No-IP - People and companies across the world use No-IP’s Dynamic DNS and Managed DNS services to access their computers and files remotely, monitor cameras or smart devices, and more
  • Duck DNS (install) - free dynamic DNS hosted on AWS
  • VPNBook
  • DNSCrypt is a protocol that encrypts, authenticates and optionally anonymizes communications between a DNS client and a DNS resolver. It prevents DNS spoofing. It uses cryptographic signatures to verify that responses originate from the chosen DNS resolver and haven’t been tampered with.

Concepts

Where concepts fit neatly under the OSI or TCP/IP Model, they can be found in the respective layer's subsection.

Resources & Articles 📚

Key Organisations

OSI and TCP/IP Model

Application Layer (“Layer 7”) inc. Presentation and Session Layers

Transport Layer (Layer 4)

Network Layer (Layer 3; also sometimes known as the “Internet layer”)

Physical Layer (Layer 1)

History of Computer Networking

Graph View

Backlinks