What Is Ethereal?

Ethereal is a free network protocol analyzer for Unix and Windows that lets users examine data from 1) a live network or 2) a capture file on disk. Users can interactively browse the capture data, viewing summary and detail information for each packet. Ethereal features include a rich display filter language and the ability to view the reconstructed stream of a TCP session. For more information, see: http://www.ethereal.com/.


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t is a cakebox? It is a small, inexpensive PC running Linux. It is configured such that, when you plug it into a DHCP-enabled Ethernet port and give it power, it registers its presence with an LDAP server where it logs its current IP address so you can “find” it. You can then connect to it remotely and run a series of network utilities (like Iperf, traceroute, and pchar). Cakeboxes were developed by Internet2 to test H.323 video conferencing capabilities and have been used for a variety of other end-to-end performance tests. Instructions on “building” a cakebox are available to member institutions upon request.
DHCP-enabled Ethernet port and give it power, it registers its presence with an LDAP server where it logs its current IP address so you can “find” it. You can then connect to it remotely and run a series of network utilities (like Iperf, traceroute, and pchar). Cakeboxes were developed by Internet2 to test H.323 video conferencing capabilities and have been used for a variety of other end-to-end performance tests. Instructions on “building” a cakebox are available to member institutions upon request.