Apache is the most popular webserver on the Internet, quite possibly the best in terms of security, functionality, efficiency, and speed.
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Prelude is a Network Intrusion Detection system which captures packets and performs data analysis and reporting. Important and current features of Prelude include an IP defragmentation stack and detection plugins with persistent state.
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Network Associates Security Advisory COVERT-2001-01 - BIND v8.2.2 to 8.2.3-T9B contains buffer overflows that allows a remote attacker to execute arbitrary code. The overflow is in the initial processing of a DNS request and therefore does not require an attacker to control an authoritative DNS server. This vulnerability not dependent upon configuration options and affects both recursive and non-recursive servers. Additional remote format string and buffer overflows affect v8.2 through 8.2.3-T9B and v4.9.3 to v4.9.7. ISC's description of the problems available here.
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