ZyXEL Communications ZyWall ATP series - 17.3 White List Screen

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2 If you have uploaded a logo to show on the SSL VPN user screens but it does not
display properly, check if the logo graphic is in GIF, JPG, or PNG format. The
graphic should use a resolution of 103 x 29 pixels to avoid distortion when
displayed. The ZyWALL/USG automatically resizes a graphic of a different
resolution to 103 x 29 pixels. The file size must be 100 kilobytes or less. Transparent
background is recommended.
3 If users can log into the SSL VPN but cannot see some of the resource links, check
the SSL application object’s configurations.
4 If the ZyWALL/USG redirects the user to the user aware screen, check whether the
user account is included in an SSL VPN access policy or not.
5 If you have changed the HTTP/HTTPS configuration, the SSL VPN network
extension sessions will be disconnected. The sessions need to be reconnected if
this happens.