IPsec is a critical element in building a scalable and secure SD-WAN fabric. The right IPsec is key to making it happen. Robert Sturt published an article title “SD-WAN vs. VPN: How do they compare?” While Robert tried to illustrate when and how to use SD-WAN vs. VPN, the objective of this blog is to look deeper into existing IPsec approaches and challenges in building and securing an SD-WAN fabric, and how IPsec UDP can help address these challenges. At the end of this blog, I have included a link to a Silver Peak white paper that provides a detailed explanation of IPsec options.
Firewalls are becoming increasingly important in today’s world. Hackers and automated scripts are constantly trying to invade your system and use it for Bitcoin mining, botnets or other things. To prevent these attacks, you can use a firewall on your system. IPTables is the strongest firewall in Linux because it can filter packets in the kernel before they reach the application. Using IPTables is not very easy for Linux beginners. We have created easywall - the simple IPTables web interface . The focus of the software is on easy installation and use. Access this neat software over on github: easywall