That value is the id of the next protocol header right after Ethernet. The Ip4 header has a reserved id value of 0x800 for it. So anyone reading that packet has to look into that type field in order to determine the next protocol. When he does, 0x800 in that field tells him the next header is Ip4.
1 The Constitution contains no reference to any right to privacy. 2  However, over more than 100 years, courts have found a fundamental (but somewhat vague) right to privacy implicit in the Constitution.
Most of us believe that our medical and other health information is private and should be protected, and we want to know who has this information. The Privacy Rule, a Federal law, gives you rights over your health information and sets rules and limits on who can look at and receive your health information. The Privacy Rule applies to all forms of individuals' protected health information, whether electronic, written, or oral. The Security Rule is a Federal law that requires security for health information in electronic form.