ZyXEL Communications ZyWALL Troubleshooting Manual page 21

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SSL VPN connection will not establish
SSL VPN connection will not connect or being redirected to a different
screen, try the following steps to troubleshoot the issue.
 Make sure you are using a USER account to establish the SSL VPN
connection. Users with ADMIN privileges cannot be part of the
SSL VPN rule/policy. Administrative users will automatically get
redirected to the configuration GUI. To verify the user account
type, login to the ZyWALL's WebGUI and go to Configuration 
Object  User/Group.
 Make sure the network connection is not "Disabled" on Windows.
To check this, click the Windows Logo key on your keyboard + the
"R" key. This will open the RUN dialog box. Type "ncpa.cpl"
and click OK or hit the Enter/Return key. On the Network
Connections screen look for the connection using the
TAP-Windows adapter for ZyXEL SecuExtender.
 Verify the server IP address the SecuExtender is dialing to and user
credentials.
Windows macOS
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