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O'Reilly Network: Using Ethereal

Aug 27, 2000, 15:06 (0 Talkback[s])
(Other stories by Dru Lavigne)


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"One of my favorite utilities in the ports collection is the network analyzer, Ethereal. I've used NT's Network Monitor and Novell's Lanalyzer, but I've found that neither matches the functionality of Ethereal."

"If you've never used a network analyzer before, you may wonder why you'd want to use such a utility. If a network administrator is experiencing slow network performance, a network analyzer can help him pinpoint which NICs, cable segments, and protocols are generating the most traffic. The results can be used to determine if he needs to upgrade his cabling, change a faulty NIC, install a bridge, reorder his network bindings, consider using less chatty protocols, etc."

"A security engineer can use the results to determine if his firewall system is responding to requests according to his security policy."

"And finally, the results of a network analyzer provide the best learning environment to gain a practical understanding of the OSI model and how protocols actually interact with each other."

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