The LG Android 5.0 platform must disable split-tunneling on the VPN client.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-58821	LGA5-20-001500	SV-73251r1_rule		Medium

Description
Spilt-tunneling allows multiple simultaneous remote connections to the mobile device. Without VPN split-tunneling disabled, malicious applications can covertly off-load device data to a third-party server or set up a trusted tunnel between a non-DoD third-party server and a DoD network, providing a vector to attack the network. SFR ID: FPT_BBD_EXT.1.1

STIG	Date
LG Android 5.x Interim Security Configuration Guide	2015-09-22

Details

Check Text ( C-59665r6_chk )
This validation procedure is performed on both the MDM Administration Console and the LG Android device. Check whether the appropriate setting is configured on the MDM Administration Console: 1. Ask the MDM administrator to display the "Allow VPN Split Tunneling" setting in the MDM console. 2. Verify the setting for the VPN Split Tunneling is disabled. On the LG Android device: 1. Unlock the device. 2. Open the device settings. 3. Navigate to the VPN Split Tunneling setting: Settings >> Tethering & Networks (or Wireless & Networks) >> VPN >> LG VPN >> add LG VPN network >> select "Show advanced options" popup >> "Disable Split Tunneling". Verify it is checked. If the "Allow VPN split tunneling" setting is enabled, or if the user is able to change the "Disable Split Tunneling" setting on the device, this is a finding.

Check Text ( C-59665r6_chk )

This validation procedure is performed on both the MDM Administration Console and the LG Android device.

Check whether the appropriate setting is configured on the MDM Administration Console:
1. Ask the MDM administrator to display the "Allow VPN Split Tunneling" setting in the MDM console.
2. Verify the setting for the VPN Split Tunneling is disabled.

On the LG Android device:
1. Unlock the device.
2. Open the device settings.
3. Navigate to the VPN Split Tunneling setting:
Settings >> Tethering & Networks (or Wireless & Networks) >> VPN >> LG VPN >> add LG VPN network >> select "Show advanced options" popup >> "Disable Split Tunneling". Verify it is checked.

If the "Allow VPN split tunneling" setting is enabled, or if the user is able to change the "Disable Split Tunneling" setting on the device, this is a finding.

Fix Text (F-64205r1_fix)
Configure the mobile device to disable VPN split tunneling. On the MDM Administration Console, disable the "Allow VPN split tunneling" setting.