Though this article mainly deals with problems inherent to wireless networks, the principals apply equally well to wired networks. Also, though FreeBSD is the OS referenced, this may work equally well with other flavors of BSD . The version of FreeBSD used was 4.5-release.
I have the good fortune to have access to broadband Internet through an 802.11b wireless ethernet uplink. It is my good fortune because I live in a rural area where no other broadband services are available or are likely to be available any time soon. On the other hand, 802.11b wireless networks are inherently insecure. They can be made more secure using built in security features, such as the 802.11b Wireless Equivalency Protocol (WEP); but even these features are inadequate. Traffic broadcast over these networks is vulnerable to being intercepted by unscrupulous persons for their own nefarious purposes.
The link for this article located at BSDToday is no longer available.
