When other protocols are blocked by firewalls
Firewalls often restrict all
communication over the ports normally used by public timeservers. If it impractical to reconfigure the
firewall, then use the NIST-80 protocol that communicates over tcp
port 80, the same port used for web communication. Beagle Software maintains
an NIST-80 timeserver. It can be selected from the timeserver directory list
within ClockWatch. (see Options->Timeserver, Directory)
NIST-80 time setting format
Communicates via TCP/IP on port 80. After a setting is made, the
time string used in the setting is displayed in the timeserver log window.
ClockWatch translates this string. All times from NIST-80 are in UTC. This
time string is made up of a series of fields arranged end to end.
Format headings, with an actual sample time
string below it:
beaglesoft 02-03-06 22:01:22
- This identifies the host responding to the request, in this case
YYMMDD HHMMSS - The next 6
values give the Coordinated Universal date and time (formerly called Greenwich
Mean Time) as year, month, day, hour, minute and second.