Our next category is Protocols, and when you expand the Protocols category, you have a huge list of all the protocols supported by Wireshark, and all of their associated configuration options that you can tweak.
Now, most of these you can leave alone at their defaults and everything will work just fine. There are two that you're probably going to want to tweak at some point in your career, and that'll be IP and TCP; or three if you count IPv6 now. IPv4, IPv6, and TCP are probably the most common ones that you're going to adjust, if you adjust them at all. What we'll do is, we'll go to IPv4, and you'll see there's a checkbox called Validate the IPv4 checksum if possible that's actually disabled by default:
Now this used to be enabled ...
