Re: Web filtering fails for IP of website but DNS is blocked
Keep in mind when rating URLs by IP address is some site may be hosted on "cloud" servers and/or may be classified as such or pulls page elements (e.g. images) from other domains, so you may run into rating issues.
Your best bet if you really want to nix users from browsing by IP address is to perhaps craft a URL using perl or regular expression that triggers on a IP-like addresses - I never tried this myself so do not know how effective it would be.
NSE4/FMG-VM64/FortiAnalyzer-VM/5.4/6.0 (FWF40C/FW92D/FGT200D/FGT101E)/ FAP220B/221C