Salah satu fitur menarik menggunakan draytek vigor adalah kemampuan untuk melakukan filtering terhadap akses ke jaringan, atau dikenal dengan web Content filtering.
Web Content Filtering
The Vigor 2710 Series also features Web Content Filtering, allowing you to block web sites or content by keyword matching, content file type or by using DrayTek's new GlobalView site cetegorisation system (subject to subscription). DrayTek Web Filtering allows you to block web content in three main ways:
By matching keyword / specific sites
By web site category (Subject to Subscription)
By digital content type
IP Filtering (Actually part of the firewall, along with many other security features.)
Features 1,3 and 4 above are included with the router. Feature 2 is included but requires an annual subscription to the external server which keeps a real-time contstantly updated database of web sites. More details of that later.
1. Keyword Matching
In Keyword Matching you can specify a list of either banned (blacklist)) or permitted sites (whitelist). The DrayTek method is 'object' oriented, which means that you create lists of keywords or sites, can then group them and then apply them into specific user groups or time periods Using a blacklist, all sites would be accessible by your users except those that match the keywords you specify. This would be useful, for example where there are specific sites known to be causing distuption or timewasting in your organsiation such as social networking or webmail. The example below would allow access to all sites except the ones listed:
A whitelist, on the other hand, is much more restrictive on what your users can access as it blocks all web sites by default and then only allows access to web sites which match your keywords. This is useful when you really want to lock down your Internet access to only allow very specific web site access. The example below would block access to all web sites except those listed:
The URL blacklist and whitelist feature is included as standard on all supported DrayTek routers.
2. Web Site Category (DrayTek GlobalView)
DrayTek's GlobalView allows you to select specific categories of web site which your router will allow access to. For example, an office may wish to block access to social networking or other company-time wasting sites or a home user might want to block adult sites from their children GlobalView covers 64 separate categories which you can select as blocked or permitted. Every time one of your users attempts to access a site, the router's automatically queries the central GlobalView server to ascertain its classification. This takes only milliseconds. If a site is blocked by GlobalView, according to the categories you have selected, instead of the requested web page, a warning message is displayed to the user (you can customise the message).
The GlobalView central database is continuously updated with new sites and changes to sites but also records normally legitimate sites which have become compromised or contain malware (a unique feature to GlobalView). Access to the GlobalView server requires an annual subscription. A free 30-day trial is included with all new routers so that you can try the feature out before subscribing. Scroll down the box below to see the 64 different categories which can be blocked by GlobalView, either permanently or at certain times of day/week according to your chosen schedule and for the PCs you choose.
GlobalView Categories :
Globalview requires an annual subscription, available from your dealer. The subscription covers any number of users connected to your router. For the Vigor 2110 series you need a 'b' type subscription.
3. Digital Content Type
DrayTek's Content filtering allows you to specify particular data types or web content to be blocked by the router. The vigor is pre-set with many different content types or protocols. You can select any or all of them for blocking. There are infinite combinations but some examples of commonly blocked content are:
Block download of executable (EXE) or compressed (ZIP) files to reduce the chance or virus infection or installation of untested software.
Block Peer-to-Peer (P2P) software such as BitTorrent, to avoid users using vast amounts of your bandwidth or engaging in media piracy.
Block HTTP/FTP upload or webmail to prevent theft/espionage of your company data
At Home, block Instant Messaging protocols to prevent your children from unsupervised chat with strangers.
Block SMTP from all devices other than your mail server to stop Trojan Zombies
