What Can Go Wrong - ZyXEL Communications ZyWALL 110 Handbook

Figure 581 System Preferences... > Network

5.5.4 What Can Go Wrong?

If you see [alert] log message such as below, please check ZyWALL/USG L2TP Allowed User or
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User/Group Settings. Apple MAC OS X El Capitan operating system users must use the same
Username and Password as configured in ZyWALL/USG to establish the L2TP VPN.
Figure 582
If you see [info] or [error] log message such as below, please check ZyWALL/USG Phase 1 Settings.
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Apple MAC OS X El Capitan operating system users must use the same Pre-Shared Key as
configured in ZyWALL/USG to establish the IKE SA.
Figure 583
If you see that Phase 1 IKE SA process has completed but still get [info] log message as below,
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please check ZyWALL/USG Phase 2 Settings. ZyWALL/USG unit must set correct Local Policy to
establish the IKE SA.
Figure 584
Ensure that the L2TP Address Pool does not conflict with any existing LAN1, LAN2, DMZ, or WLAN
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zones, even if they are not in use.
If you cannot access devices in the local network, verify that the devices in the local network set
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the USG's IP as their default gateway to utilize the L2TP tunnel.
Chapter 5 Create Client-to-Site VPN Tunnels
ZyWALL/USG Series User's Guide
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