The 9000VPN contains the most robust and complete set of Content Filters that I've seen. Where as most of the URL filters found on SOHO routers are easily bypassed by entering the IP address for the website of interest, that trick won't get you by this router's URL Blocking feature.
Competing "keyword" filters usually just screen for the keyword in the website's URL, but the 9000VPN's Keyword Filtering (Figure 15) actually parses webpage content for the offending string, which can also be a regular expression! Other unique options for this feature include the ability to apply the filter to gzipped content and make the search case insensitive.
Figure 15: Keyword Filtering
You get 20 entries each for URL and Keyword filters and when they kick in, the user's browser just hangs.
For those users who can take everything the web has to dish out, you can use the Trusted IP feature to define IP and port ranges that will bypass the content filters. Finally, the Content Filter Port Checking page lets you specify the ports - in addition to the default 80 / HTTP - that that the filtering features are applied to.