Connecting Windows 10 Clients to IPSec VPN using Security

What is the "shared secret" used for in IPSec VPN? What if someone jailbreaks the phone and gets access to the shared secret? Would they be able to do a man in the middle attack on the entire VPN server? Right now my iOS VPN client doesn't use any IKEV2 shared secret. I wonder how important it is to use one. Thanks for your advice. $\endgroup$ – Houman Oct 29 '17 at 8:26 UniFi - USG/UDM: Configuring L2TP Remote Access VPN 8. Select Remote User VPN and add the following information: Name: l2tp Purpose: Remote User VPN VPN Type: L2TP Server Pre-Shared Key: Gateway IP/Subnet: 192.168.2.1/24 Name Server: Auto WINS Server: Unchecked Site-to-Site VPN: Unchecked RADIUS Profile: Default MS … Configure and Use L2TP on Windows 8.1 To prepare a Windows 8.1 computer to make an L2TP VPN connection, you must configure the L2TP connection in the network settings. The exact steps could be slightly different, depending on your Control Panel view, and your existing configuration. In the Windows 8.1 Start page, type control panel. Click Control Panel in the search results. VPN shared secret? [Solved] | MacRumors Forums

8. Select Remote User VPN and add the following information: Name: l2tp Purpose: Remote User VPN VPN Type: L2TP Server Pre-Shared Key: Gateway IP/Subnet: 192.168.2.1/24 Name Server: Auto WINS Server: Unchecked Site-to-Site VPN: Unchecked RADIUS Profile: Default MS …

Apr 16, 2018 IPSEC VPN with pre-shared key not worki - Cisco Community

Nov 06, 2012

Configure and Use L2TP on Windows 8.1 To prepare a Windows 8.1 computer to make an L2TP VPN connection, you must configure the L2TP connection in the network settings. The exact steps could be slightly different, depending on your Control Panel view, and your existing configuration. In the Windows 8.1 Start page, type control panel. Click Control Panel in the search results. VPN shared secret? [Solved] | MacRumors Forums