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Tel: +44 (0) 1902 897400
Fax: +44 (0) 870 123 1844 Email: Info@TimeTools.co.uk |
Using NTP \ SNTP Software with Windows XP / 2003 Firewall
Windows XP SP2 and Windows Server 2003 SP1 has an enhanced firewall that blocks NTP \ SNTP requests and responses. In order to maintain NTP \ SNTP server or client operation, you will need to configure the firewall to allow network time protocol UDP messages. Network time protocol operates on UDP port 123, this is the port that needs to exempt from the firewall protection. How to configure Windows XP firewall. From the Control Panel, select Windows Firewall. Ensure 'Windows Firewall' is 'On (recommended)' Ensure 'Don't allow exceptions' is unchecked. On the Windows Firewall 'Exceptions' tab, select 'Add Port' In the 'Add Port' window, type 'SNTP' as port name and port 123 as port number. Also check UDP port. Click OK. 'SNTP' should now appear in the list of exceptions. Now that NTP \ SNTP port 123 is exempt from the firewall, any NTP \ SNTP application should operate correctly.
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Support - GPS Timing
- What is the coverage of the GPS signal ?
- Where is the best place to locate the GPS antenna ?
- That are the advantages of the GPS timing solutions ?
- What is the maximum cable length of the GPS antenna ?
- GPS signal issues.
- What is Galileo ?
- NTP Time Server GPS Amplifier
- Windows 2000 GPS Clock
- Windows XP GPS Clock
- Windows 2003 GPS Clock
- Linux GPS Clock
- NMEA GPS Clock
- Sharing a single GPS antenna with multiple GPS NTP Server
Support - MSF \ DCF-77 Radio Time Code Timing
- MSF Timing Advantages.
- DCF-77 Timing Advantages.
- What is the coverage of the MSF signal ?
- What is the coverage of the DCF-77 signal ?
- Where is the best place to locate a MSF radio antenna ?
- Where is the best place to locate a DCF-77 radio antenna ?
- What is the maximum cable length of the MSF radio antenna ?
- What is the maximum cable length of the DCF-77 radio antenna ?
- MSF Radio Signal Issues.
- MSF Signal Outages
- NTP Time Server MSF Accuracy
- NTP Time Server DCF77 Accuracy
- NTP Time Server GPS Accuracy
- NTP Time Server - Is the MSF Signal Affected By Weather
Support - NTP - Network Time Protocol
- NTP Authentication Example
- Linux NTP Client Configuration
- Windows 2000 NTP Time Server
- Windows 2003 NTP Time Server
- Windows XP NTP Time Server
- NTP Time Server Accuracy
- NTP and SNTP
- Using NTP \ SNTP Software with Windows XP / 2003 Firewall
Support - NTP s5000 Series NTP Time Servers
- What is the maximum NTP s5000 NTP requests per second ?
- What are SysLog messages ?
- Dual NTP Time Server
- NTP Time Server BTU
Support - MSF Radio FAQ
Support - Atomic Clock FAQ
- MSF Atomic Clock information
- DCF Atomic Clock information
- GPS Atomic Clock information
- Atomic Clock UTC Time
- TimeTools Atomic Clock Synchronisation Devices
Support - Digital Wall Clock
- How do the Ethernet Digital Wall Clocks display accurate time ?
- How are the Digital Wall Clocks configured ?
- How is PoE used on the Digital Wall Clocks ?
- Digital Wall Clock Mounting options.
- Digital wall clock display formats.
- Digital Wall clock time zones
- Daylight saving
Support - Windows XP / Server 2003
Support - Revision
- Index
- NTP s5000 Firmware Revisions
- NTP s5100 Firmware Revisions
- NTP s5500 Firmware Revisions
- TrustTime NT/2000/XP
- TrustTime NTP
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Ethernet Networked NTP Time Displays |
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