400
| Administrator Tasks
ClearPass Guest 3.9 | Deployment Guide
To ensure that authentication, authorization, and accounting (AAA) is performed correctly, it is vital that
the server maintains the correct time of day at all times. It is strongly recommended that you configure one
or more NTP servers to automatically synchronize the server’s time.
NTP can interfere with timekeeping in virtual machines. The default virtual machine configuration will
automatically synchronize its time with the host server, and so you should not configure NTP if you are
using virtualization for ClearPass Guest. However, make sure that the host is configured to keep its clock in
sync with a suitable time source.
If one is available, it is strongly recommended that you use an NTP server that is available on your local
network. This will improve timekeeping and will eliminate the need for additional Internet traffic for the
time server.
To use a public NTP server, enter the following hostnames:
0.pool.ntp.org
1.pool.ntp.org
2.pool.ntp.org
You can also use NTP pool servers located in your region. For more information, refer to the NTP Pool
Project Web site
: http://www.pool.ntp.org
.
Select the
Set server’s clock using NTP server
check box to perform a single clock synchronization with
the specified time servers. The synchronization will take place when you click the Save Changes button.
To set the server’s time manually, enter a value in the Server Time field using the recommended format, or
click the
…
button to display a date/time chooser.
Click the
Save Changes
button to apply the new time and date settings.
You should provide a local NTP server. Do not use the default setting as this may be unreliable.
Summary of Contents for ClearPass Guest 3.9
Page 1: ...ClearPass Guest 3 9 Deployment Guide ...
Page 32: ...32 Management Overview ClearPass Guest 3 9 Deployment Guide ...
Page 178: ...178 RADIUS Services ClearPass Guest 3 9 Deployment Guide ...
Page 316: ...316 Guest Management ClearPass Guest 3 9 Deployment Guide ...
Page 410: ...410 Administrator Tasks ClearPass Guest 3 9 Deployment Guide ...
Page 414: ...414 Administrator Tasks ClearPass Guest 3 9 Deployment Guide ...
Page 423: ...ClearPass Guest 3 9 Deployment Guide Hotspot Manager 423 ...
Page 440: ...440 High Availability Services ClearPass Guest 3 9 Deployment Guide ...
Page 518: ...518 Index ClearPass Guest 3 9 Deployment Guide ...