How TCP really works: Top 3 things you need to know!
YouTube video with the amazing Chris Greer: https://youtu.be/Auwn3RWapRE
TCP/IP Model: Where are the devices and protocols?
This is part of my FREE CCNA 200-301 Course (2025 edition)
YouTube video: https://youtu.be/0vgUkk-WzcU
TCP/IP Model vs OSI Model (FREE CCNA 200-301 Course 2025)
YouTube video: https://youtu.be/a0UIbw1MsUM
Is there a standardised (or vaguely common) hostname akin to localhost that either a) only resolves to the IPv4 127.0.0.1, or only resolves to the IPv6 [::1]? In my experience, whether localhost resolves to an IPv4 or IPv6 address seems to be somewhat OS-dependent (or even system-dependent), I am wondering if there's a standard way to specify that I do want either the IPv4 version or the IPv6 version?
Why, you ask? I have a service on localhost that only listens on IPv4, but today localhost resolved to [::1] and it broke. Now I fixed it easily by specifying 127.0.0.1 as the server address instead of localhost in the upstream proxy, but it did make me start wondering.
@nonfedimemes Seeing the mention of carrier pigeons has me think that sure, any step towards an independent, interoperable RFC1149 implementation would be welcome (see https://www.bsdly.net/~peter/rfc1149_ten_years_of_in-flight_internet.html for some relevant links), but that would perhaps run the risk of being somewhat distruptive in a school or at least classroom environment #rfc1149 #pigeons #tcpip #cpip
If you're not running your own DNS resolver, and/or not running PiHole, changing your DNS from 8.8.8.8 to 9.9.9.9 is a good first step
Let's code a TCP/IP stack, 1: Ethernet and ARP — https://www.saminiir.com/lets-code-tcp-ip-stack-1-ethernet-arp/
#HackerNews #TCPIP #Stack #Ethernet #ARP #Networking #Coding
Blast from the past: I digitized and uploaded a 1993 VHS video tape that was included with my trainer kit for teaching Internetworking with Microsoft Windows NT 3.5.
I assume the audience for this one is pretty niche, but for me it provided a welcome dose of healthy nostalgia.
With #IPv6 there's no reason for ISPs to be stingy with public IPs. Over-provisioning shared IPs and #CGNAT are now archaic workarounds for a problem that no longer exists.
#internetaccess #networking #tcpip
Be like me and go and learn about TCP fundamentals
https://www.youtube.com/watch?v=xdQ9sgpkrX8
#bash #sh #zsh #ksh #csh #WomenWhoCode #100DaysOfCode #1000DaysOfCode #POSIX #Programming #networking #TCP #TCPIP
From Arpanet to the Internet: The Untold Story of Britain's First Connection
In the 1970s, a pioneering effort led by Professor Peter Kirstein connected the UK to Arpanet, the precursor to the modern internet. This groundbreaking achievement not only introduced the first passw...
From Arpanet to the Internet: The Untold Story of Britain's First Connection
In the 1970s, a pioneering effort led by Professor Peter Kirstein connected the UK to Arpanet, the precursor to the modern internet. This groundbreaking achievement not only introduced the first passw...