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Home > Art, Film & Photography > Network Time-Related Software: Network Time Protocol, Unix Time, Ntp Server Misuse and Abuse, Precision Time Protocol, Openntpd, Ntpd
Network Time-Related Software: Network Time Protocol, Unix Time, Ntp Server Misuse and Abuse, Precision Time Protocol, Openntpd, Ntpd

Network Time-Related Software: Network Time Protocol, Unix Time, Ntp Server Misuse and Abuse, Precision Time Protocol, Openntpd, Ntpd


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About the Book

Purchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Chapters: Network Time Protocol, Unix Time, Ntp Server Misuse and Abuse, Precision Time Protocol, Openntpd, Ntpd, Time Protocol, Time Server, Ntp Pool, Daytime, Rdate, Ntpdate. Excerpt: The Internet Protocol Suite The DAYTIME service is an Internet protocol defined in 1983 in RFC 867. It is intended for testing and measurement purposes in computer networks . A host may connect to a server that supports the DAYTIME protocol, on either TCP or UDP port 13. The server then returns the current date and time as an ASCII string with an unspecified format. Inetd implementation of DAYTIME On Linux, FreeBSD, and other UNIX-like operating systems a daytime server is built into the inetd daemon . The daytime service is usually not enabled by default. It may be enabled by adding the following lines to the file /etc/inetd.conf and telling inetd to reload its configuration: daytime stream tcp nowait root internal daytime dgram udp wait root internal On OpenBSD, inetd is configured to support the DAYTIME service by default. An example output may be: Tuesday, February 22, 1982 18:45:59-PST See also (online edition) Websites (URLs online) A hyperlinked version of this chapter is at The NTP pool is a dynamic collection of networked computers that volunteer to provide highly accurate time via the Network Time Protocol to clients worldwide. The machines that are "in the pool" are part of the pool.ntp.org domain as well as of several subdomains divided by geographical zone and are distributed to NTP clients via round robin DNS . Work is being done to make the geographic zone selection unnecessary, via customized authoritative DNS servers that utilize geolocation software . As of October 2009, the pool consists of about 1850 active time servers. Because of the decentralization of this project accurate stati...


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Product Details
  • ISBN-13: 9781155850696
  • Publisher: Books LLC
  • Publisher Imprint: Books LLC
  • Height: 152 mm
  • Sub Title: Network Time Protocol, Unix Time, Ntp Server Misuse and Abuse, Precision Time Protocol, Openntpd, Ntpd
  • Width: 229 mm
  • ISBN-10: 1155850696
  • Publisher Date: 07 May 2010
  • Binding: Paperback
  • Spine Width: 4 mm
  • Weight: 100 gr


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