You want to use the Symantec Mobile Management Certificate Signing Request (CSR) Portal to request an Apple Push Notification Certificate (APNS).
The Symantec Mobile Management CSR Signing Portal is a secure web site hosted by Symantec, which is linked to the Symantec Mobile Management console. The portal simplifies the APNS certificate request process by guiding you through the steps.
The NS server and the client machine that will access the NS console must have HTTPS access to the Symantec Mobile Management CSR Signing Portal (csr.ext8.eme.symclab.com) directly or through a proxy server. If you use a proxy server, you must define the proxy settings in the NS console and also in the browser that you will use to access the portal. There are two channels to set the proxy: one channel is through the NS console and the second channel is through Internet Explorer.
To request an APNS certificate:
When finished, the APNS certificate will be automatically distributed to all MMS servers in your site environment.
Symantec Mobile Management 7.2 SP2.1 - SP3 MR1, MR2, MR3