ZyXEL Communications ZyWALL Troubleshooting Manual page 23

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Connection issues with SSL VPN
If you have successfully established an SSL VPN connection to the
ZyWALL and are experiencing issues, please try the following.
 Can't access local network resources when VPN connection is
established? Please make sure there are no IP conflicts between
the remote and local network. If both sites are using the same IP
scheme, 192.168.1.0/24 for example, routing will not work properly.
Once the VPN tunnel is established all traffic destined for a
192.168.1.0/24 address will flow through the VPN tunnel. This is
because the route the computer operating system created to
send traffic through the VPN tunnel has a higher priority/metric
that the regular route.
 Disable the ZyWALL's firewall if you are having problems getting
traffic through the tunnel.
To disable the ZyWALL's firewall/policy control, go to:
Configuration  Firewall
Policy  Policy Control
 Disable the computers firewall if you are having problems getting
traffic through the tunnel to make sure it is not blocking.
Windows:
box. You can access this by pressing the Windows + R keys on the
keyboard.
To disable the Windows firewall, open a RUN dialog
OR Configuration  Security
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