The RUCKUS ICX device must authenticate Network Time Protocol sources using authentication that is cryptographically based.

If Network Time Protocol (NTP) is not authenticated, an attacker can introduce a rogue NTP server. This rogue server can then be used to send incorrect time information to network devices, which will make log timestamps inaccurate and affect scheduled actions. NTP authentication is used to prevent this tampering by authenticating the time source.

View NTP configuration:

SSH@ICX# show running-config | begin ntp

ntp disable authenticate md5 authenticate authentication-key key-id 1 sha1 2 $VWlkRGkt server x.x.x.x key 1 server y.y.y.y key 1

If the NTP servers are not configured for authentication that is cryptographically based, this is a finding.

Configure NTP for authentication using SHA1:

SSH@ICX(config)# ntp SSH@ICX(config-ntp)# disable authenticate md5 SSH@ICX(config-ntp)# authenticate SSH@ICX(config-ntp)# authentication-key key-id 1 sha1 [password]