Your workstation, upon you telling your browser you wish to view this website, has to form a connection with the webserver running that site. Of course prior to this we have to make a DNS request so find the IP of the webserver, but that’s out of the context of this article. So, what is a connection? When we use TCP protocol, we have to create a connection to send and receive data. Unlike UDP that we can just “send” data and hope it gets there, TCP does not do this. For instance, let’s say we wish to get the webpage right. But first, let me go into what it is, and why is it important! While the world keeps going around with many firewall vendors on the market, let’s take a look at just one of the many facilities in the MikroTik RouterOS system. RouterOS will use connection tracking if you turn on specific features. While connection tracking is not required for the most basic routing, it is useful if you need to do specific things.
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