FAQs on Homework 4

  • I am confused on what is question #2 in Ethereal Lab is asking, "Within the IP packet header, what is the value in the upper layer protocol field?". Which field is it asking to look for in ethereal, I can't find something that says upper layer protocol field?

    If you go throught the IP Header of a packet, it contains a field which says which transport protocol to deliver the packet to. The IP header in etheral too contains this information and is very much visible. Just see the packets closely.