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Jul 24

DNAT Explained: Publishing an Internal Service Through One Public Address and Port

#nat #network #containerlab #iptables

7 min read

Jul 24

Split-Horizon DNS: One Name, Two Answers, and the Server Decides by Who's Asking

#dns #bind #network #containerlab

7 min read

Jul 24

DNS Round-Robin: The Cheapest Load Balancer Is Three A Records and a Rotating Answer

#dns #network #containerlab #bind

7 min read

Jul 23

TCP MSS Clamping: Fixing Path MTU Black Holes by Rewriting the SYN

#tcp #network #containerlab #mtu

7 min read

Jul 21

ECMP Explained: Two Equal Paths, and the Kernel Hashes Flows Across Them

#bgp #network #containerlab #ecmp

8 min read

Jul 18

DHCP Explained: How a Machine With No IP Address Gets One in Four Messages

#dhcp #network #containerlab #udp

7 min read

Jul 17

How traceroute Really Works: TTL, ICMP Time-Exceeded, and Mapping a Path Hop by Hop

#network #icmp #traceroute #containerlab

8 min read

Jul 17

VXLAN Explained: An Overlay You Can Read on the Wire

#vxlan #network #containerlab #overlay

8 min read

Jul 16

WireGuard, Seen From Both Sides: The Same Ping as Ciphertext and Cleartext

#wireguard #vpn #network #containerlab

9 min read

Jul 14

TLS 1.3 on the Wire: What an Eavesdropper Can Still See Before Encryption Kicks In

#tls #network #containerlab #openssl

8 min read

Jul 13

One TCP Connection, From SYN to FIN: Capture the Whole Lifecycle in tcpdump

#tcp #network #containerlab #tcpdump

10 min read

Jul 13

DNS Caching Explained: Watch TTLs Count Down and NXDOMAIN Get Cached Too

#dns #network #containerlab #bind9

10 min read

Jul 12

Competing Origins: When Two ASes Announce the Same Prefix, Who Do You Believe?

#bgp #network #containerlab #routeleak

9 min read

Syed Asif

Jul 6

Building Hybrid Network Labs with netlab: Combining Containerlab and Vagrant

#netlab #containerlab #vagrant #libvirt

11 min read

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