Green Sea Turtle·2d agoHow to Set Up a Secure Firewall Using iptables (IPv4)This tutorial details how to setup a default deny all firewall using the iptables utility on Linux over IPv4
Susovan Mahapatra·Oct 21BGP Is Established, but Traffic Isn’t Flowing — What’s Missing?1. The Problem: Routing Looks Healthy, but Traffic Does Not
Subhadip Mishra Eng·Sep 23Mastering the Network Layer: IP Addressing, Subnetting, CIDR, NAT, and ICMP1. MAC vs. IP: Why Layer 3 Needs Logical Addressing
DIVYANSHU SINGH·Sep 19Where Do the Dots Go?Addresses have always been a little hard for me to understand.
Roshan Khadka·Sep 18An Open Letter to IANA: You Gave Away the Internet’s Address Space and Left Us With the BillHow a 1981 design decision cost us 2.1 billion addresses we’ll never get back.
Yonatan Lumbantoruan·Sep 17Tag 9 — Subnetting und IP-Adressierung: Die Netzwerkkarte für die Untersuchung verstehenIP-Adressen wie ein SOC-Analyst lesen
Mihindi Gunawardana·Sep 16How IP Addresses Actually Work? (Very Simple Edition)Before talking about IP addresses, Let’s take a look at number systems.A response icon2A response icon2
Artem Kohanevich·Sep 3Three Companies, One /24, and Nobody LyingA guy emailed me last year about a block he was about to lease. Nice /24, RIPE region, price was fine. He’d done what he thought was the…
Dawid Kowalski·Aug 22The Packet X-Ray: Analyzing the DNA of an IPv4 HeaderI built a multi-hop network and looked “under the hood” to see how a packet actually lives and dies.
