To set the duration of Endpoint Security (HX) certificates:
Enable CLI configuration mode.
hostname > enable
hostname # configure terminal
Specify the certificate duration, in days:
hostname (config) # hx pki server cert-days <days>
where <days> is the number of days that the Endpoint Security (HX) certificate remains active. Valid values range from 0 and 65535 days. The default is 1825 days (5 years).
To set the duration back to the default, use the no form of this command: