RUN TCP/IP | Morgan Lucas is Tech Blogging

Let's briefly look at some virtual firewalls in Linux. This is Iptables, running in my Ubuntu Server. Remember that? What is CHAIN in this context? My best guess is 'the route a packet takes'. Think "At this point in the process, what should happen to this packet?" [ 1 ] Here, it's saying "Forward everything!". At which point, you may as well not have a firewall at all. So let's set some rules on this bad boy;