Hello Mohudoom Faluludeen,
Thank you for using our services.
SiteMenu control is populated from the SiteMap so if a user does not have permissions to view a page this page will not appear in the site map for the current user. This means that you cannot use the SiteMenu to show deny anonymous pages. You will have to develop a custom menu which gets pages through the Pages API. You can find samples for this in the link - Sitemenu Builder
. Or something like the sample bellow.
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