Embodiments of the invention relate to methods and apparatus for establishing a secure connectivity for WiFi calling service to the EPC over a trusted or managed WLAN by establishing an IPSec tunnel over the WLAN with a gateway in the EPC (ePDG) through an HTTP server and logging to the HTTP server that may be co-located with the ePDG. The disclosure could enable internet traffic to be routed through the WLAN or through the HTTP server itself while routing WiFi calling service related traffic through the HTTP server and ePDG. The UE authentication used to establish the IPSec tunnel is used as a common authentication for the secure connectivity for WiFi calling service and local routing of internet traffic as permitted.