How to Setup Transit Gateway + Site to Site VPN and NAT Gateway?I have previously published two articles explaining the separate installation of Transit Gateway and IPSec.Dec 11Dec 11
Why use DNS ALIAS record instead of CNAME in the Cloud?Having a custom domain on top of a cloud resource is essential.May 48May 48
Two Network Interfaces on the Same Subnet: ARP Flux IssueIt might be necessary to utilize several network interfaces within a single subnet. Separating application traffic from replication traffic…Apr 281Apr 281
How to Rename enX0 to eth0 on Ubuntu/Debian?The interface name in the latest Ubuntu/Debian versions is determined by the hypervisor.Apr 26Apr 26
How to Mirror Traffic to Another Pod in Kubernetes?Mirroring network traffic in production has a lot of benefits, such as debugging, troubleshooting, testing, monitoring, etc.Apr 13Apr 13
How can an EC2 instance call itself via Internal NLB?Imagine that you have an application running on multiple EC2 instances.Apr 71Apr 71
How to fix conntrack: table full, dropping packets in Kubernetes?The Kubernetes network stack has many levels.Mar 301Mar 301
How to Develop a Firewall in C as a Linux Kernel Module?Part 1: Understanding Network Packets: IP Header, UDP Header Part 2: How To Use IPTables to Block a Specific DNS Request?Mar 17Mar 17
Understanding SPF and CNAME Records for EmailsSending email from a subdomain can be difficult. This can be more difficult if there is a CNAME on the subdomain.Mar 12Mar 12
How to Write a Simple Linux Kernel Module?Kernel module development can be challenging. Let’s write our first simple Linux Kernel Module.Mar 9Mar 9
