Which section of the IP header defines the entire packet size in bytes, including header and data?
- Total length
- IP address
The total length field in the IP header indicates the entire packet size in bytes, including header and data. While this is not the most useful field in intrusion analysis, it is good to know what it describes.
The first header field in an IP packet is the four-bit version field. For Pv4, this is always equal to 4. The source and destination IP address fields contain the source and destination IP addresses. The identification field is primarily used for uniquely identifying the group of fragments of a single IP datagram.