Specifications
14-6
Cisco NAC Appliance - Clean Access Manager Configuration Guide
OL-28003-01
Chapter 14 Administering the CAM
Set System Time
To manually modify the system time:
1. In the System Time form, either:
2. Type the time in the Date & Time field and click Update Current Time. The time should be in the
form:
mm/dd/yy hh:ss PM/AM
3. Or, click the Sync Current Time button to have the time updated by the time servers listed in the
Time Servers field.
To automatically synchronize to the time server:
The default time server is the server managed by the National Institute of Standards and Technology
(NIST), at time.nist.gov. To specify another time server:
1. In the System Time form type the URL of the server in the Time Servers field. The server should
provide the time in NIST-standard format. Use a space to separate multiple servers.
2. If you want to authenticate the server to get the time, check the Authentication checkbox to enable
NTP authentication. Once this option is enabled, you will be able to enter the following:
–
Key Id—Specify a key number.
–
Key Type—Currently, only MD5 is supported. The key type MD5 specifies that message
authentication support is provided by using the Message Digest 5 hashing algorithm.
–
Key Value—For MD5 authentication, this is a password consisting of a string of one to eight
characters. If the string is longer than eight characters, only the first eight will be used.
Note The NTP Authentication is not available for FIPS-compliant CAMs/CASs.
3. Click Sync Current Time.
If more than one time server is listed, the CAM tries to contact the first server in the list when
synchronizing. If available, the time is updated from that server. If it is not available, the CAM tries the
next one, and so on, until a server is reached.
Note If the NTP Authentication has been enabled, the same Key Id, Key Type, and Key value are used for all
the servers.
To poll the time server periodically, edit the
ntp.conf file and then start ntpd as follows:
[root@cam1 init.d]# ./ntpd
Usage: ./ntpd {start|stop|restart|condrestart|status}
[root@cam1 init.d]# ./ntpd start
Starting ntpd: [ OK ]
To change the time zone of the server system time:
1. In the Current Time tab of the Administration > CCA Manager page, choose the new time zone
from the Time Zone drop-down list.
2. Click Update Time Zone.