ZyXEL Communications ZyWALL5UTM 4.0 User Manual

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ZyWALL 5/35/70 Series User’s Guide
Chapter 52 Troubleshooting
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Figure 408   Security Settings - Java Scripting
52.5.1.3  Java Permissions
From Internet Explorer, click ToolsInternet Options and then the Security tab. 
Click the Custom Level... button. 
Scroll down to Microsoft VM
Under Java permissions make sure that a safety level is selected.
Click OK to close the window.