The customer has been warned about possible vulnerabilities on their Juniper devices

No symptoms detected yet as this is just a vulnerability

generic-tcp-timestamp vulnerability has been addressed via CVE-2016-1269.

NTP server amplification denial of service attack vulnerability has been addressed via CVE-2013-5211

https://supportportal.juniper.net/s/article/2016-04-Security-Bulletin-Junos-Manipulating-TCP-timestamps-can-lead-to-resource-exhaustion-denial-of-service-CVE-2016-1269?language=en_US

https://supportportal.juniper.net/s/article/2014-07-Security-Bulletin-Junos-NTP-server-amplification-denial-of-service-attack-CVE-2013-5211?language=en_US