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 11, 2024Dec 11, 2024
Why use DNS ALIAS record instead of CNAME in the Cloud?Having a custom domain on top of a cloud resource is essential.May 4, 20248May 4, 20248
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 28, 20241Apr 28, 20241
How to Rename enX0 to eth0 on Ubuntu/Debian?The interface name in the latest Ubuntu/Debian versions is determined by the hypervisor.Apr 26, 2024Apr 26, 2024
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 13, 2024Apr 13, 2024
How can an EC2 instance call itself via Internal NLB?Imagine that you have an application running on multiple EC2 instances.Apr 7, 20241Apr 7, 20241
How to fix conntrack: table full, dropping packets in Kubernetes?The Kubernetes network stack has many levels.Mar 30, 20241Mar 30, 20241
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 17, 2024Mar 17, 2024
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 12, 2024Mar 12, 2024
How to Write a Simple Linux Kernel Module?Kernel module development can be challenging. Let’s write our first simple Linux Kernel Module.Mar 9, 2024Mar 9, 2024
