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10th August 2009
Network Time Protocol (NTP) provides algorithms and defines messages for the synchronisation of time clients to an accurate time reference. This article discusses how to configure a Linux NTP Time Server to synchronise time with an Internet based public N... Read >
Author: Geeta09th August 2009
Network Time Protocol (NTP) provides algorithms and defines messages for the synchronisation of time clients to an accurate time reference. This article discusses how to configure a Linux NTP Time Server to synchronise time with an Internet based public N... Read >
Author: geeta109th August 2009
Network Time Protocol (NTP) provides algorithms and defines messages for the synchronisation of time clients to an accurate time reference. This article discusses how to configure a Linux NTP Time Server to synchronise time with an Internet based public N... Read >
Author: geeta116th July 2009
Timing is very important to the proper functioning of a computer network of any kind. Many computer transactions use a time stamp but it is not as important that a single computer have perfect timing (although it is desirable, after all we all like our wa... Read >
Author: Graham Gallagher16th July 2009
Linux based operating systems are increasing in popularity all the time. Commercial operating systems like Windows and OS X are constantly being bombarded by viruses and security breaches. There are few viruses that can touch a Linux system and they are o... Read >
Author: Graham Gallagher09th April 2009
All computers maintain system time from an internal real-time clock chip. These devices are generally relatively low-cost and as a consequence tend not to keep good time. In fact, computers are notorious for providing inaccurate time and can drift by seve... Read >
Author: Dave26th February 2009
Do you regularly need to correct the time on your PC? The answer is probably "Yes!". This is because computers have very poor time-keeping hardware. Often, the system clock in a regular PC can drift by minutes each day. However, help is at hand. It is ver... Read >
Author: Dave08th January 2009
NTP is an acronym for Network Time Protocol. NTP is used throughout the computing industry to maintain synchronisation of computers and network infrastructure to an accurate time reference, or NTP Time Server. This article attempts to clearly and simply d... Read >
Author: Dave18th December 2008
NTP, or Network Time Protocol, is a standard protocol for synchronising time on computers and network equipment. NTP allows client computers to synchronise with a reference NTP server over a computer network. The protocol was originally developed for the ... Read >
Author: Dave16th October 2008
Atomic clocks use an atomic resonance frequency standard as their timekeeping element and are by far the most accurate chronometers possible with the latest Strontium based atomic clocks boasting a precision of a less than a second lost in several hundred... Read >
Author: Richard N Williams08th October 2008
What is a time server?
A time server is a device that utilises a single time source and distributes it amongst a network. This enables all machines on a LAN (or WAN) to be synchronised together.
What is NTP?
Network Time Protocol is a protocol ... Read >
Author: Richard N Williams08th October 2008
All PC’s and networking devices use clocks to maintain an internal system time. These clocks, called Real Time Clock chips (RTC) provide time and date information. The chips are battery backed so that even during power outages, they can maintain time.
... Read >
Author: Richard N Williams02nd October 2008
What is a network time server?
A network time server is a hardware device that utilises a single time source and distributes it amongst a network to ensure all computers and devices are telling the same time.
What is NTP?
Network Time Protocol ... Read >
Author: Richard N Williams30th September 2008
In today’s Cisco practice exam, we’ll take a look at Frame Relay traffic congestion indicators, Network Time Protocol, and other important exam topics. Let’s get started!
CCNA And CCENT Certification:
What purposes do the BECN, FECN, and DE... Read >
Author: Chris Bryant24th September 2008
Q. What is NTP?
A. NTP – Network Time Protocol is an Internet protocol for time synchronisation, whilst other time synchronisation protocols are available NTP is by far the most widely used having been around since the mid 1980’s when the Internet wa... Read >
Author: Richard N Williams23rd September 2008
Network Time Protocol seems to have been around for ever. In fact it is indeed one of the Internet’s oldest protocols having been developed in the 1980’s by Professor David Mills and his team from Delaware University.
In a laid-back world it perhap... Read >
Author: Richard N Williams23rd September 2008
A NTP Server connects to a computer network with the purpose of synchronising all computers, routers and other devices to the exact same time. NTP servers use Network Time Protocol to adjust the drift of different machines to match the reference time.
... Read >
Author: Richard N Williams09th September 2008
The way a computer deals with time is totally different to the ways humans perceive it. We arrange time into seconds, minutes, hours, days, weeks, months and years, while computers on the other hand arrange time as a single number representing the seconds... Read >
Author: Richard N Williams08th September 2008
Even when the Internet when was its infancy, with no more than a few computers connected together it became apparent that there was a need for time synchronisation. Computers are easily confused particularly with time which can only travel in one directio... Read >
Author: Richard N Williams08th September 2008
Just as your computer is only as good as the software it is running, a time server is only as useful as the timing source it uses. Time servers are similar to other servers in that they are located on a network but the primary function of a time server is... Read >
Author: Richard N Williams05th September 2008
Atomic clocks are the most accurate timekeeping devices developed by man. Modern atomic clocks are so accurate that even in 100 million years less than a second of time would be lost.
This accuracy makes them ideal references for a NTP server (Network ... Read >
Author: Richard N Williams05th September 2008
Time synchronization is vital in modern computer networks. Having one machine running a slower clock than another can cause a myriad of all sorts of problems. From the benign, such as emails arriving before they were sent, to the more serious such as bei... Read >
Author: Richard N Williams28th August 2008
When you set your watch by the speaking clock or the radio beeps have you ever wondered who is responsible for setting that time and how they can be sure it is accurate.
This may seem like a straightforward question but their is no master clock that th... Read >
Author: Richard N Williams29th July 2008
Ensuring a computer is not only displaying the correct time but that it is being maintained accurately is not as straight-forward as it first sounds.
Most Linux systems have two clocks. The hardware clock, also known as the CMOS of Bios clock, is usual... Read >
Author: Richard N Williams29th July 2008
Many people are probably familiar with the Internet Time tab when setting their clock in Windows. This is a basic form of NTP (Network Time Protocol) called SNTP (Simple Network Time Protocol) that polls a NTP server every so often to synchronize time to.... Read >
Author: Richard N Williams24th July 2008
Computers systems have internal real-time clocks that are notoriously poor at keeping accurate time. Hence, the time on all computers and network devices can drift away from one another at different rates. This can be a real headache when trying to synchr... Read >
Author: Dave24th July 2008
To help you prepare for success on your Cisco certification exams, here are some complimentary practice exam questions. Enjoy!
CCENT Exam:
Name the header fields that a UDP segment and TCP segment have in common.
Answer: Source port, destinat... Read >
Author: Chris Bryant23rd July 2008
Linux operating systems are becoming increasingly popular partly due to the many advantages they have over commercial systems like Windows or OS X. Linux offers increased security (as there are only a handful of viruses that can infect a Linux based syste... Read >
Author: Richard N Williams18th July 2008
Network Time Protocol (NTP) is an Internet protocol used for the transfer of accurate time, providing time information so that a precise time can be obtained and maintained on a network
Most UNIX and Linux operating systems provide built-in time synchr... Read >
Author: Richard N Williams17th July 2008
Microsoft Windows has a built in time synchronisation facility called windows time (w32time.exe). Windows time is based on Network Time Protocol (NTP) an Internet protocol designed to synchronise computers on a network.
Using Windows Time service it is... Read >
Author: Richard N Williams17th July 2008
Network Time Protocol (NTP) is an Internet standard protocol designed over 25 years ago and still under constant development. NTP synchronises devises on a network to a single timing source. If time on a network is not synchronised when applications are c... Read >
Author: Richard N Williams16th July 2008
This article explains how you can synchronise your computer with an absolute time source and can be kept accurate using NTP.
Clocks are essential for computers. Everything from sending and email to turning a PC on will involve a timestamp. Computers ar... Read >
Author: Richard N Williams13th July 2008
Since the early 1990’s the Global Positioning system (GPS) has been the worlds’ only fully functioning Global Navigational Satellite System (GNSS). Run by the American military, GPS (sometimes referred to as NAVSTAR) has allowed accurate timing and lo... Read >
Author: Richard N Williams10th July 2008
Precision and time synchronisation is highly important for modern computer networks, without synchronisation many time sensitive transactions would be impossible to carry out.
The internal clock in computers does keep time and date information but these ... Read >
Author: Richard N Williams04th July 2008
NTP servers (Network Time Protocol) are devices that can synchronise a computer network to an authoritative UTC time source. UTC (Coordinated Universal Time) is a global time scale used throughout the world and provided by atomic clocks.
NTP servers ca... Read >
Author: Richard N Williams04th July 2008
Time synchronisation in modern computer networks is essential, all computers need to know the time as many applications, from sending an email to storing information are reliant on the PC knowing when the event took place.
Microsoft Windows Server from... Read >
Author: Richard N Williams03rd July 2008
Time synchronisation in modern computer networks is essential, all computers need to know the time as many applications, from sending an email to storing information are reliant on the PC knowing when the event took place.
Microsoft Windows XP has a ti... Read >
Author: Richard N Williams03rd July 2008
NTP servers or Network Time Protocol are devices that connect to a computer network and synchronise all machines to a single time source. Of course most Windows operating systems have an inbuilt NTP program called Windows Time that can synchronise to an I... Read >
Author: Richard N Williams02nd July 2008
Nearly all a computers activity involves time whether logging a timestamp for when a network was accessed to sending an email, knowing the time is crucial for computer applications.
All computers have an on-board clock that provides time and date infor... Read >
Author: Richard N Williams01st July 2008
It can be really annoying. You have just got off the plane, booted up your lap top and set the clock to local time. Yet all your appointments suddenly move, not just the ones on that side of the ocean either, when you return home and reset the clock the a... Read >
Author: Richard N Williams01st July 2008
Network Time Protocol (NTP) is probably the Internet’s oldest protocol. Developed at the University of Delaware, it has been in use and continually updated for the last 25 years. In short it is a protocol designed to synchronize the clocks on computers ... Read >
Author: Richard N Williams01st July 2008
Time is certainly a concept most of us take for granted, it passes us by and we only notice it when we catch a glimpse of a grey hair in the mirror or arrive late for that important meeting. Yet keeping track of the time has occupied mankind for millennia... Read >
Author: Richard N Williams26th June 2008
All PC’s and networking devices use clocks to maintain an internal system time. These clocks, called Real Time Clock chips (RTC) provide time and date information. The chips are battery backed so that even during power outages, they can maintain time. H... Read >
Author: Richard N Williams25th June 2008
Network Time Protocol has been developed to keep computers synchronized. All computers are prone to drift and accurate timing is essential for many time critical applications.
A version of NTP is installed on most versions of Windows (although a stripp... Read >
Author: Richard N Williams23rd June 2008
The world is becoming an ever smaller place. Modern technology means that it is just as easy to make a purchase from the other side of the world as it is buy something from our local high street.
Everything from hotels and airline tickets to jewellery ... Read >
Author: Richard N Williams20th June 2008
Knowing the time is an essential part of our daily lives. We all need to know what time to start work, what time to leave and even when to get up in the morning. We have a multitude of different devices for telling us the time; from our mobile phones to o... Read >
Author: Richard N Williams18th June 2008
Precision and time synchronisation is highly important for modern computer networks, without synchronisation many time sensitive transactions would be impossible to carry out.
The internal clock in computers does keep time and date information but thes... Read >
Author: Richard N Williams10th June 2008
Computers are now part and parcel of our daily lives and we often take them for granted. Whether we are starting our car, loading the washing machine or taking cash out of the bank, a computer is behind it.
We are also used to computers talking to each... Read >
Author: Richard N Williams30th May 2008
Copyright (c) 2008 Richard Williams
Time synchronisation in modern computer networks is essential. It not only provides the only frame of reference between all devices, it is critical in everything from securing, planning and debugging a network to pro... Read >
Author: Richard N Williams27th May 2008
Copyright (c) 2008 Richard Williams
On occasion we all need to know the time and we have a multitude of different devices to tell us it; from our mobile phones and wrist watches to the office wall clock or the chimes on the radio news.
But how accur... Read >
Author: Richard N Williams26th May 2008
Copyright (c) 2008 Richard Williams
NTP (Network Time Protocol) synchronises networks to a single time source using timestamps to represent the current time of the day, this is essential for time sensitive transactions and many system applications such... Read >
Author: Richard N Williams25th May 2008
Copyright (c) 2008 Richard Williams
Time servers are like other computer servers in the sense they are usually located on a network. A time server gathers timing information, usually from an external hardware source and then synchronises the network to... Read >
Author: Richard N Williams15th May 2008
Network Time Protocol (NTP) is one of the Internet’s oldest protocols still used, invented by Dr David Mills from the University of Delaware, it has been in utilized since 1985. NTP is a protocol designed to synchronize the clocks on computers and netwo... Read >
Author: Richard N Williams15th May 2008
Network Time Protocol (NTP) is one of the Internet’s oldest protocols still used, invented by Dr David Mills from the University of Delaware, it has been in utilized since 1985. NTP is a protocol designed to synchronize the clocks on computers and netwo... Read >
Author: Richard N Williams15th May 2008
Time servers are like other computer servers in the sense they are usually located on a network. A time server gathers timing information, usually from an external hardware source and then synchronises the network to that time.
Often time servers are s... Read >
Author: Richard N Williams15th May 2008
A Guide to NTP and Computer Network Time Synchronisation
This article explains Network Time Protocol (NTP) and how it is used in the synchronisation of networks.
Network Time Protocol (NTP) is one of the Internet’s oldest protocols. In use for ov... Read >
Author: Richard N Williams09th May 2008
Network Time Protocol (NTP) is one of the Internet’s oldest protocols and is still the standard for time synchronisation. The success of NTP stems from its constant development (version 4 is currently in progress) and the accuracy that an NTP time serve... Read >
Author: Richard N Williams08th May 2008
The Network Time Protocol (NTP) was developed more than 25 years ago to synchronise Internet servers to the correct time. NTP is now one of the oldest protocols still in operation today. The protocol is widely used to synchronise Internet and intranet inf... Read >
Author: Dave06th May 2008
All computers need to know the time. Many applications, from sending an email to storing information are reliant on the PC knowing when the event took place. In some environments timing is even more crucial where a single second can make all the differenc... Read >
Author: Richard N Williams06th May 2008
Computer time synchronisation is highly important in modern computer networks, precision and time synchronization is critical in many applications, particularly time sensitive transactions. Just imagine buying an airline seat only to be told at the airpor... Read >
Author: Richard N Williams06th May 2008
Time synchronisation in modern computer networks is essential. It not only provides the only frame of reference between all devices, it is critical in everything from securing, planning and debugging a network to providing a time stamp for applications su... Read >
Author: Richard N Williams06th May 2008
NTP (Network Time Protocol) synchronises networks to a single time source using timestamps to represent the current time of the day, this is essential for time sensitive transactions and many system applications such as email.
NTP is therefore vulnerab... Read >
Author: Richard N Williams06th May 2008
Copyright (c) 2008 Richard Williams
On occasion, we all need to know the time and we have a multitude of different devices to tell us it, from our mobile phones and wrist watches to the office wall clock or the chimes on the radio news. But how accurat... Read >
Author: Richard N Williams02nd May 2008
Atomic Clocks have been around for over fifty years or so. They are clocks that use an atomic resonance frequency as its timekeeping element rather than conventional oscillating crystals such as quartz.
Most atomic clocks use the resonance of the atom ... Read >
Author: Richard N Williams02nd May 2008
Network Time Protocol (NTP) is one of the Internet’s oldest protocols still in use. Invented by Dr David Mills from the University of Delaware it has been utilized since 1985. NTP is designed to synchronize the clocks on computers and networks across th... Read >
Author: Richard N Williams02nd May 2008
Time synchronisation in modern computer networks is essential. It not only provides the only frame of reference between all devices, it is critical in everything from securing, planning and debugging a network to providing a time stamp for applications su... Read >
Author: Richard N Williams02nd May 2008
All PC’s and networking devices use clocks to maintain an internal system time. These clocks, called Real Time Clock chips (RTC), provide time and date information. They are battery backed so that even during power outages, they can maintain time. Howev... Read >
Author: Richard N Williams02nd May 2008
Network Time Protocol (NTP) is one of the Internet’s oldest protocols still utilised today. Developed by Dr David Mills from the University of Delaware, it has been in constant use and continually updated since 1985. NTP is a protocol designed to synchr... Read >
Author: Richard N Williams02nd May 2008
On occasion we all need to know the time and we have a multitude of different devices to tell us it; from our mobile phones and wrist watches to the office wall clock or the chimes on the radio news.
But how accurate are all these clocks and does it ... Read >
Author: Richard N Williams01st May 2008
Network Time Protocol (NTP) is one of the Internet’s oldest protocols still utilised. Invented by Dr David Mills from the University of Delaware it has been in use since 1985. NTP is a protocol designed to synchronize the clocks on computers and network... Read >
Author: Richard N Williams01st May 2008
On occasion, we all need to know the time and we have a multitude of different devices to tell us it, from our mobile phones and wrist watches to the office wall clock or the chimes on the radio news. But how accurate are all these clocks and does it matt... Read >
Author: Richard N Williams07th April 2008
Many networks in organisations suffer from a lack of time synchronisation between servers, workstations and other network components. This can lead to problems processing time critical information and transactions. However, a solution has been available f... Read >
Author: Dave22nd January 2008
Computer servers and workstations have integrated real-time clocks that are based on simple, cheap, crystal oscillators. The real-time clock is battery backed and maintains system time even when the computer is switched off. However, crystal oscillators c... Read >
Author: Dave07th November 2007
PC's maintain system time with relatively inexpensive crystals and real time clock chips. The low-cost and specification of the timing devices utilised means PC's can often keep very poor time. However, there are a number of hardware and software solution... Read >
Author: Dave18th September 2007
Copyright (c) 2007 Galleon SystemsThis article demonstrates the implication of poor network time synchronisation and how significant it is to have network time in your Companies.Every Computer has a clock that sustains the internal system time. PC clocks ... Read >
Author: galleon02nd September 2007
The Network Time Protocol (NTP) was developed to provide a way of synchronising Internet clients to an accurate network time reference. NTP allows the time on client computers to be set to within a fraction of the correct time. The NTP protocol is a suite... Read >
Author: Dave29th August 2007
Copyright (c) 2007 Galleon Systems
An accurate time reference is a fundamental requirement to many computer software applications. Although every Personal Computer incorporates an internal clock, it pays to check that the date and time settings are cor... Read >
Author: galleon13th August 2007
The Network Time Protocol (NTP) was developed over 25 years ago as a means of distributing accurate time across the Internet. It is one of the oldest Internet protocols still in use today. NTP is a client-server based protocol for the distribution of accu... Read >
Author: Dave24th July 2007
The GPS system is a US military system to provide worldwide positioning information for navigational purposes. The system is maintained for the military by USNO, the United States Naval Observatory. The system is implemented by 24 orbiting satellites, eac... Read >
Author: Dave23rd July 2007
NTP is a suite of algorithms and specifications developed as an Internet protocol to ensure accurate synchronisation of client computers. Network Time Protocol specifies an agreed message structure to pass time from an accurate reference to a time client.... Read >
Author: Dave01st July 2007
Computers maintain time and date information using internal real-time clock chips. These chips are battery-backed and maintain time even when the power to the computer is switched off. However, the components utilised are relatively low-cost devices and h... Read >
Author: Dave29th June 2007
NTP, or Network Time Protocol, was originally developed for ensuring the synchronisation of client machines across the Internet. NTP is one of the oldest Internet protocols still widely used today. The protocol is still widely used to ensure time synchron... Read >
Author: Dave26th June 2007
Network Time Protocol (NTP) is a standard protocol for synchronising the time of client computers on the Internet and computer networks. The protocol operates in a hierarchical manner, each level or stratum serving the next level in the hierarchy. At the ... Read >
Author: Dave23rd May 2007
Network Time Protocol (NTP) is a standard Internet protocol for the dissemination of time around a computer network. The protocol operates in a hierarchical manner, each level or stratum serving the next level in the hierarchy. At the top of the hierarchi... Read >
Author: Dave17th May 2007
Most computer systems have integrated Real Time Clocks (RTC) used to maintain time and date information. Invariably, real time clocks are battery backed so that time and date information can be maintained even when the PC is powered down. The PC clock pro... Read >
Author: Dave03rd May 2007
The Network Time Protocol (NTP) was developed to distribute time around a computer network to network time clients. It is one of the oldest Internet protocols still in operation. Simple Network Time Protocol (SNTP) was developed as a simplified version of... Read >
Author: Dave02nd May 2007
Network Time Protocol is utilised by NTP server systems to distribute accurate time around a computer network. NTP is an Internet protocol solely used for the dissemination of time. By utilising a GPS or radio external reference clock, you can build a hig... Read >
Author: Dave10th April 2007
NTP or Network Time Protocol is an Internet protocol used to disseminate time across a computer network. It is widely used to synchronize time critical applications to an accurate reference time source.
This article describes the Network Time Protocol ... Read >
Author: Dave04th April 2007
Network Time Protocol (NTP) is a standard protocol for the transfer of time across the Internet and computer networks. The NTP protocol source code is ?open source' and can be freely downloaded from the NTP web site. The NTP primary development platform i... Read >
Author: Dave26th March 2007
NTP or Network Time Protocol to give it its full name is an internet protocol designed to distribute precise time around a network. NTP is a UDP based protocol used to synchronize system time on network infrastructure, such as servers, workstations and ne... Read >
Author: Dave05th March 2007
Each PC has an integral real-time clock that maintains internal system time. PC clocks have low-cost crystal oscillators that are notoriously prone to drift. With time each computer in an organisation drifts at different rates. After a relatively short pe... Read >
Author: Dave02nd March 2007
NTP or Network Time Protocol servers are network devices that are designed to distribute accurate time to network time clients and other network infrastructure. This article describes how to configure and install NTP server systems on a network and discus... Read >
Author: Dave01st March 2007
The Global positioning System (GPS) is a US military system primarily intended for global navigation. The system provides highly accurate positioning information for navigation. The GPS system consists of a constellation of 24 orbiting satellites. Each sa... Read >
Author: Dave28th February 2007
Network Time Protocol (NTP) is used to advertise time to network time clients on an IP network. NTP is a UDP based protocol that is used to synchronise system time on network devices. This article describes how to utilise NTP authentication to authenticat... Read >
Author: Dave10th February 2007
PC's have internal real time clocks designed to maintain system time. The internal clocks rely on relatively low-cost crystal oscillators, which are notoriously inaccurate. In many cases PC system time can drift by several minutes each day. This article d... Read >
Author: Dave02nd February 2007
Network Time Protocol (NTP) provides algorithms and defines messages for the synchronisation of time clients to an accurate time reference. This article discusses how to configure a Linux NTP Time Server to synchronise time with an Internet based public N... Read >
Author: Dave31st January 2007
The Network Time Protocol (NTP) is utilised by NTP Server systems to distribute accurate time information to network time clients. The NTP protocol is widely used throughout the Internet to provide synchronisation of computers and processes. This article ... Read >
Author: Dave20th April 2006
While routers accept and generate broadcasts, they do not forward them. This can be quite a problem when a broadcast needs to get to a device such as a DHCP or TFTP server that's on one side of a router with other subnets on the other side.
If a PC... Read >
Author: Chris Bryant10th October 2005
New time PC clock synchronization suite works with all common types of proxy servers.
Advanced Time Synchronizer is a small software application that synchronizes PC clock with atomic time severs to make sure it's never off by more than a few millise... Read >
Author: Southsoftware. com
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