This article is from a FAQ concerning SCO operating systems. While some of the information may be applicable to any OS, or any Unix or Linux OS, it may be specific to SCO Xenix, Open There is lots of Linux, Mac OS X and general Unix info elsewhere on this site: Search this site is the best way to find anything.
A collection of network tools, including the tcpdump packet sniffer, can be found at ftp://ftp2.sco.com/pub/skunkware/osr5/net/nettools/. Pay particular attention to the requirements mentioned in the README file. For example, you will need a dedicated NIC to make this work.
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