How to Create/Modify NACLs and SGs in AWS
In AWS, Network Access Control Lists (NACLs) and Security Groups (SGs) are used to control traffic to and from your resource, much like a firewall….
Networking
How to Connect AWS Instance and S3 Bucket with PrivateLink
AWS PrivateLink, not to be confused with peering, offers a simple solution to connect to different AWS cloud resources. It enables you to establish private…
How to Configure User-Defined Routes in AWS
In Amazon Web Services (AWS), creating User-Defined Routes (UDRs) is a crucial networking task that allows you to customize the routing behavior for specific subnets…
How to Create AWS VPC Peering Connection Step-by-Step
VPC peering allows you to connect two VPCs in the same or different AWS accounts. It operates over the AWS network backbone, ensuring low-latency and…
How to Configure & Renew SSL Certificate on F5 BIG-IP
SSL certificates are a key part of any modern web traffic. They play a big role in establishing secure communication channels between clients and the…
How to Setup an AWS Client VPN Using OpenVPN on EC2
In this tutorial, we will explore how to set up a basic client VPN on Amazon Web Services (AWS) EC2 using OpenVPN Access Server. The…
How to Enable SSH on a Cisco Catalyst Switch or Router
In this tutorial, we’ll cover the steps to enable SSH access on a Cisco switch or router running IOS, IOS-XE, or IOS-XR. Secure Shell (SSH)…
How to Create a VPC on AWS Step-by-Step
In this guide, I’ll walk you through the step-by-step process for creating a Virtual Private Cloud (VPC) on Amazon Web Services (AWS). A VPC enables…
F5 BIG-IP CLI Commands Cheat Sheet
Many F5 engineers almost solely use the GUI (graphical user interface via browser, in F5 terms: Configuration Utility) because F5 has a really good and…
How to Write F5 iRules with Examples
If you’ve ever seen an F5 BIG-IP configuration page, you know it has a lot of different options. There are dozens of settings just for…
How to Upgrade F5 BIG-IP Software
Life doesn’t stop once you buy your network equipment and install it in your network. You need to monitor your vendor software update notices since…
CIDR Subnet Mask Cheat Sheet
We know it can be pain trying to remember which CIDR notation to use or what subnet mask to enter for a specific subnet. That’s…