If you go into the stickies at the top of this FW forum, (I just did it) there are dozens upon dozens of protocols. Many seem obscure to me as to why they exist at all. So, in our FW rules which ones do I have to allow? I propose to block them all except TCP and UDP? If I do that task what do you guys think would be the consequences? Here is one I don't like 12:22:59 PM Allow IN Ethernet 00-xx-6vv-f1-vv-0g 00-2hh-11-22-22-22 No Rule And I have IPv6 IP Helper service disabled!!!!! .