This read-create INTEGER (noAuthNoPriv(1)/authNoPriv(2)/authPriv(3)), defaulting to noAuthNoPriv, specifies, per its source description, the SNMPv3 security level for this IPv6-capable notification host's messages: none, authentication only, or both authentication and encryption. Admins raise this to authPriv for an IPv6 notification host reached over a network path that isn't otherwise secured, ensuring both the authenticity and confidentiality of the notification content. For example, setting this to authNoPriv(2) would verify the sender's identity via authentication without encrypting the notification payload itself.