Understand Firmware External Access

Overview

Certain system services in the terminal access external services, typically via specific IP ports.

Services List

TMS (wizarview)

The major TMS servers: TMS_Server_IP_Addresses_and_Port_Configuration

• www.wizarview.com

204 Pages

These servers are used to check internet connectivity by pinging an empty HTTP(S) page (204 response), and commonly use HTTP port 80 and HTTPS port 443. For example: http://connectivitycheck.gstatic.com/generate_204

• connectivitycheck.gstatic.com

• www.google.com

• www.qualcom.com

A-GPS Location Services

TMS agent use these services for GPS data, which can be disabled through TMS agent configuration.

• location.services.mozilla.com(associated with the Micro-G project)

• locprod2-elb-us-west-2.prod.mozaws.net(associated with the Micro-G project)

• xtrapath2.xboxprod.izatcloud.net(associated with the Qualcomm izat)

• time.izatcloud.net(associated with the Qualcomm izat)

• izattime.xboxprod.izatcloud.net(associated with the Qualcomm izat)

• xtrapath1.izatcloud.net(associated with the Qualcomm izat)

• xtrapath2.izatcloud.net(associated with the Qualcomm izat)

NTP Services

The Android system utilizes these servers for automatic time adjustment when set to 'AutoTime', and typically uses UDP port 123 for time synchronization.

• asia.pool.ntp.org (old default)

• cn.pool.ntp.org (old backup)

• hk.pool.ntp.org (old backup)

• 2.android.pool.ntp.org (new default from aosp)