ntpsec

Network Time Protocol suite, refactored

A reimplementation of the NTP protocol daemon and tools in a secure way. A major new feature is that it implements IETF's Network Time Security standard for strong cryptographic authentication of time service. Security improvements: * Network Time Security is implemented. * The deprecated ntpdc utility, long a chronic locus of security vulnerabilities, has been removed * Autokey is not supported; that code has been removed, as it was chronically prone to security vulnerabilities. * Peer mode has been removed. The keyword peer in ntp.conf is now just an alias for keyword server. * Broadcast- and multicast modes, which are impossible to secure, have been removed. * The authentication requirement for remote configuration commands (e.g., via ntpq) can no longer be disabled. * The deprecated and vulnerability-prone ntpdate program has been replaced with a shell wrapper around ntpdig.