Content Filter FAQ
Device Related
Cerberian Related
Device Related
1. What's the operation between ZyXEL appliance and Cerberian data center?
Whenever a PC behind ZyXEL appliance issues HTTP requests to some public WEB server. ZyXEL appliance will forward the request to the targeted WEB server, but also issue an categorization query to Cerberian data center. When the HTTP response is back to ZyXEL appliance, the appliance will hold the response for a while, and wait for the query result from the Cerberian data center. If the query is not back within 10 seconds (by default setting), ZyXEL appliance will block (by default setting) the HTTP response to the PC. If the query is back, ZyXEL appliance will drop or forward the request according to the Content Filtering policy set in the appliance. The result of categorization query will be cached in ZyXEL appliance. Later on, HTTP requests to the same WEB server will be inspected by local cache.
2. How many entries can the cache of Web Site Auto Categorization keep at most?
ZyXEL appliance can keep 1024 entries in the cache at most. Entries that are used less frequently will be overwritten first when the cache is full. Contents inside the cache will be cleared out after rebooting.
3. Can I specify the time out value of the query response from Cerberian data center?
Yes, you can change it on ZyXEL appliance. The default value of the time out is 10 seconds.
Yes, you can set the policy, drop or forward, when query is timed out. The default policy is block.
5.
How to register for Cerberian service?
Either for free trial purpose or if you get PIN code by purchasing iCard, you
need to initiate registration process from ZyXEL appliance by clicking Registration
and Reports button from content Filter-> Categories page.
6.
Why can't I make registration successfully?
Since the Registration job is between ZyXEL appliance and myzyxel.com (or my.zyxel.com)
server (http://myzyxel.com (or my.zyxel.com).zyxel.com.tw).
Please make sure your Internet connection from ZyXEL appliance is ok first, and
keep the connection between them online during the registration process. Since
once the registration is granted on the myzyxel.com (or my.zyxel.com) server, myzyxel.com (or my.zyxel.com)
needs to feedback the
result (either Successful or Fail) to ZyXEL appliance.
7. What services can I get with Trial Registration?
With Trial Registration, you can get Web Site Auto Categorization, and Content Filtering Report services.
8. What types of content filter does ZyWALL provide?
ZyWALL supports three types of content filtering.
-
Restrict Web Data including ActiveX, Java Applet, Cookie, Web proxy
- URL keywords blocking
- Cerberian filter list
9. What are the primary features of ZyXEL Content Filtering ?
- Blocking or Forwarding Policy
Management (ZyXEL appliance)
- Monitoring (Cerberian)
- Real-time URL Rating (Cerberian)
- Real-Time Reporting (Cerberian)
All businesses, can benefit from using
the ZyXEL Content Filtering solution
ZyXEL Content Filtering helps organizations manage, monitor, and report on
users’ Internet activity regardless of their location within the organization.
Almost any organization — business, government, or school — can benefit from
Cerberian’s centrally managed, web-based filtering service. Consider the
following:
- 30 to 40% of Internet surfing during
work hours is not business related.
- In some companies as much as 70% of bandwidth is consumed by non-productive
pursuits.
- 68% of all Internet porn traffic occurs during the 9 to 5 workday.
- 53% of teens have encountered offensive Web sites that include pornography,
hate, or violence. Of these, 91% unintentionally found the offensive sites while
searching the Web.
ZyXEL Content Filtering is helpful to improve productivity, minimize legal
liability, and conserve costly Internet bandwidth within the organization.
Cerberian provides the most complete and accurate Internet filtering solution of
any Internet management provider and enables companies to better manage, secure
and protect their Internet investment.
11. Can I have different policies in effect for different times of the day or week?
Yes, but only one blocking period of time is supported currently on ZyXEL appliance.
12.
How many policies can I create?
Two. One is for all users, the other is exempting zone. With exempting zone, you
can define a specific range of IP exempting from the policy for all users.
13.
Can I create my own categories?
No, you can't create your own policies other than the 52 categories Cerberian
provides.
14.
Can I override (block or allow) certain URLs regardless of the rating?
Yes, you can use key word blocking to override ratings in the Cerberian
database.
15.
How many URL keywords does ZyWALL support?
64 keywords are supported.
16.
Where can I buy the iCARD and how much does it cost?
You can buy the iCard from the local dealer or distributor, please contact them for the price. Please check http://www.zyxel.com for ZyXEL global contact information.
17. How many kinds of iCard does ZyXEL provide?
3 types.
18. Is each type of iCard device specific?
Yes. Each type of iCard has is device specific. And the related info. is printed on the iCard. Users need to check the supported model names before purchasing.
Cerberian Related
1. What is Cerberian Filter list?
Cerberian (http://www.cerberian.com) provides Internet content filtering service through an outsourced model to original equipment manufacturers (OEMs) and service providers. With the Cerberian Integration Kit, ZyXEL integrates the Cerberian content filtering service into ZyXEL appliances, such as ZyWALL, Prestige, ZyAir series.
2.
How many ratings does the Cerberian database contain?
Cerberian database contains 4.3 million ratings.
The Cerberian database contains about 4.3 million ratings. Because Cerberian
rates sites at the domain or directory level, the database actually covers
hundreds of millions of unique web pages.
3.
How often does Cerberian update the database?
Cerberian continuously updates the ratings database, but Cerberian's outsourced
model does not require customers to update a local database.
Unlike other Internet content filtering solutions, Cerberian's outsourced
solution does not require clients to receive large database updates daily or
weekly. Instead, Cerberian customers all access the same ratings database. When
a user requests a URL not contained in the database, the Cerberian solution uses
Dynamic Real-time Rating to assign a rating to that page. All unrated URLs are
further analyzed by background technologies and human raters.
4. How do I locate sites to block?
Cerberian provides category ratings for Web sites. Based on the category rating from Cerberian, users of ZyXEL appliances then define blocking/forwarding policy in WEB GUI.
5.
Do humans review the web sites?
Cerberian uses expert Web content raters to train the ratings technology.
Initially, category experts create a list of URLs that represent good content
for each category. The ratings technology then uses this initial set of pages to
recognize content similar to those initial pages. Through Cerberian's internal
processes, the ratings technology learns to better categorize pages as it rates
more and more user requests. The Cerberian staff also continually adds new pages
to all categories and evaluates any pages that the rating process could not
recognize. Users can request Cerberian staff to rate specific new pages or
review automatic ratings assigned by the technology. Through this process, the
ratings technology becomes more accurate at categorizing future user requests.
6.
Do humans review the ratings?
Cerberian's Web content raters periodically review each content area. They also
examine pages based on categorization requests from end-users.
Cerberian periodically reviews certain content areas to fine tune the ability of
the ratings technology to recognize specific types of content. Also, when users
believe a page has received an incorrect rating, Cerberian rating experts will
review the categories assigned and make changes as necessary. Cerberian also
uses the human-rated sites to further train and improve the content analysis
system.
7. How can I do if I find a WEB site is mis-categorized?
When you find a web site is not
categorized as you expect, you can report to either support@zyxel.com.tw
or Cerberian Site Submissions.
8.
How many and what categories do you provide?
ZyXEL Content Filtering provides 52 categories.
We currently recognizes the following 52 categories:
Potential Liable & Objectionable Content Categories
· Adult/Mature Content
· Alcohol/Tobacco
· Gambling
· Hacking/Proxy Avoidance Systems
· Illegal Drugs
· Illegal/Questionable
· Intimate Apparel/Swimsuit
· Nudity
· Pornography
· Sex Education
· Violence/Hate/Racism
· Weapons
Potential Non-Productive Categories
· Abortion
· Arts/Entertainment
· Auctions
· Brokerage/Trading
· Business & Economy
· Chat/Instant Messaging
· Computers/Internet
· Cult/Occult
· Cultural Institutions
· Education
· Email
· Financial Services
· For Kids
· Games
· Gay & Lesbian
· Government/Legal
· Health
· Humor/Jokes
· Job Search/Careers
· Military
· News & Media
· Newsgroups
· Pay to surf sites
· Personals & Dating
· Political/Activist Groups
· Real Estate
· Reference
· Religion
· Restaurants/Dining/Food
· Search Engines and Portals
· Shopping
· Society & Lifestyle
· Software Downloads
· Sports/Recreation/Hobbies
· Streaming Media/MP3
· Travel
· Vehicles
· Web Advertisements
· Web Communications
· Web Hosting
9.
How does the ZyXEL content filtering handle dynamically generated sites?
We use Cerberian's Dynamic Real-Time Rating service to accurately categorize
dynamic content.
Because Cerberian provides Dynamic Real-Time Rating technology, most dynamic
sites receive the correct rating. Cerberian's database continually reviews the
ratings of stored URLs to ensure that the content has not changed.
10.
Does Cerberian have more than one data center? Is the Cerberian Web Filter
geographically load balanced?
Yes, Cerberian provides several, geographically distributed data centers to meet
the demand of users around the world.
11.
Who can generate and view reports on Cerberian WEB site?
Anyone with the administration username and password can view and generate reports.
12. How can I get Content Filtering report?
You can get report for content filtering by clicking Register button from ZyXEL appliance's WEB GUI, and then you will be redirected to myzyxel.com (or my.zyxel.com) web server. By clicking Content Filtering Report, the WEB interface of Cerberian reporting system will pop out. By entering the MAC address you registered to myzyxel.com (or my.zyxel.com) web server, which you can check from Registration Status of myzyxel.com (or my.zyxel.com) server, and password you specified when doing registration, you can log into Cerberian reporting system.
13. Can I change the password for Cerberian service?
Yes, you can click Register button from ZyXEL appliance's WEB GUI, then a myzyxel.com (or my.zyxel.com) web page would be popped out. You can change password in Registration Status -> Click here to update your Registration details
14. Which User Name & Password should I input for Content Filtering report?
The User Name is the smallest Ethernet MAC address of your device. To identify check the sticker in the bottom of the device as below,
password is the password to login myzyxel.com (or my.zyxel.com).
1. Please check the Internet Access is ok via launching Internet Browser and connect to a public WEB site. If the connection works, then check item 2.
2. If your ZyWALL is using Static (or Fixed) WAN IP address, please make sure that you have configured DNS server's IP address for the device in "System->General->System DNS Servers" or "Maintenance->General->System DNS Server".