If you look at the many fields in a typical IP packet, you might hesitate when you see there are several error check fields. In the Ethernet part of the packet we ...

Miss Parts I and II? No need to search or stress–they're right here:Part I Part II. IPv6 Packet Format br>The structure of the IP packet header was modified in IPv6. These changes reflect some of the ...

In Part 1 of this article, we talked about security issues related to sending and receiving IP packets and the function of IP Security, or IPSec. We also discussed different levels of security and ...

A typical User Datagram Protocol/Internet Protocol (UDP/IP) header contains 20 bytes of IP header and eight bytes of UDP header. While UDP headers contain source and destination UDP port addresses, ...

In the last issue we started following a packet's journey from the wire up to the higher levels of network stack processing. We left the packet at the end of layer 3 processing, where IP has ...