When I am working with libnet, libpcap
or trying to troubleshoot network applications with Wireshark, I
consistently refer to the web for information on packet headers. I
thought that it may be a helpful to put all that information on one
page to make it easy to find. I hope others will find this quick
reference useful as well.
If you have any suggestions on how to present the headers better than the images below, please let me know.
If the images are too small to read, you can download the image or enlarge them in your browser.
If you have any suggestions on how to present the headers better than the images below, please let me know.
If the images are too small to read, you can download the image or enlarge them in your browser.
Ethernet Header:
IPv4 Header:
TCP Header:
UDP Header:
ICMP Header:
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