"'Does anyone really know what time it is? Does anyone really
care?' It's a fine song lyric for Chicago, but when it comes to
computers, the answer is, 'Yes, we really care. We, really, really
care that our all are computers' servers logs, e-mail date and time
stamps, and our backups agree on the date and time.'
"How do you do that, though? The usual answer on SOHO (Small
Office/Home Office) networks is to have each PC call in over the
Internet to a NTP (Network Time Protocol) server. That's fine, but
it does waste a few bits of network bandwidth and with any modern
Linux you can set up your own personal NTP server for your
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