The system administrator of each proxy server may select categories from these sections to block access to Web sites. "Exceptions" will override other categories and ALLOW access to sites that would otherwise be blocked.

Primary

• Adults Only:
  Material labeled by its author or publisher as being strictly for adults. (Examples: "Adults only", "You must be 18 to visit this site", "Registration is allowed only for people 18 or older", "You must be of legal drinking age to visit this site")
• Hate/Discrimination:
  Advocating discrimination against others based on race, religion, gender, nationality, or sexual orientation.
• Illegal:
  Advocating, promoting, or giving advice on carrying out acts widely considered illegal. This includes lock-picking, bomb-making, fraud, breaching computer security ("hacking"), phone service theft ("phreaking"), pirating software, or evading law enforcement.
• Pornography:
  Material intended to be sexually arousing or erotic. (See also Sex and Nudity)
• Sex:
  Images or descriptions of sexual activity. Any sexual merchandise. Sexual fetishism. (See also Pornography and Nudity)
• Violence:
  Graphic images or written descriptions of wanton violence or grave injury (mutilation, maiming, dismemberment, etc.). Includes graphically violent games.

Secondary

• Alcohol:
  Advocating or promoting recreational use of alcohol. (See also Adults Only)
• Chat:
  Chat sites, services that allow short messages to be sent to others immediately in real time. Downloadable chat software. (See also Moderated)
• Drugs:
  Advocating or promoting recreational use of any controlled substance. (Also see Illegal)
• Free Mail:
  Sites that offer e-mail accounts over the Web for free. Such sites can expose users to harmful content delivered via e-mail file attachments. Blocking such sites also helps to enforce local acceptable-use policies when e-mail is already provided locally to users.
• Free Pages:
  Sites where home page space is offered for free. These sites historically have done nothing to prevent capricious abuse of their services by users who post offensive content under multiple pseudonyms, making them difficult to track. Individual pages that have been reviewed by N2H2 on such sites are removed from this category, but filed under other categories as necessary.
• Gambling:
  Gambling services, or information relevant primarily to gambling.
• Tasteless/Gross:
  Bodily functions. Tasteless humor. Graphic medical photos. Some extreme forms of body modification (cutting, branding, genital piercing).
• Lingerie:
  Models in lingerie (except those that qualify for Nudity).
• Message/Bulletin Boards:
  Sites that permit semi-permanent messages to be posted and read by others. (See also Moderated)
• Nudity:
  Bare or visible genitalia, pubic hair, buttocks, female breasts, etc. (See also Swimsuits, Lingerie, Sex and Pornography)
• Personal Information:
  Sites that gather personal information (name, address, credit card number, etc.).
• Profanity:
  Crude, vulgar, or obscene language or gestures.
• Murder/Suicide:
  Information on committing murder or suicide.
• School Cheating Information:
  Any site that promotes plagiarism or similar cheating among students (such as by offering term papers, exam keys, etc.).
• Tobacco:
  Advocating or promoting recreational use of tobacco. (See also Adults Only)
• Weapons:
  Information on use of weapons, weapon collecting, or weapon making.

Distractions

• Games:
  Computer games and related information, whether playable on-line or downloadable. (Also see Gambling and Violence)
• Employment Search:
  Job-hunting and related employment resources.
• Jokes:
  Jokes and humor.
• News:
  News and current events.
• Personals:
  Personal advertisements, including "mail-order brides." (See also Adults Only)
• Recreation/Entertainment:
  Recreation and entertainment information other than Games, Jokes, or Sports.
• Sports:
  Sports information, especially professional sports.
• Stocks:
  Stock trading, stock quotes, stock market information, etc.
• Swimsuits:
  Models in swimwear, especially fashion swimwear photos.

Exceptions

The categories below are used to allow access to sites that may be otherwise blocked by one of the other categories above.

• Education:
  Material under another category (such as Sex, Nudity, or Violence) that has educational value (such as classic literature, history, sex education, etc.).
• For Kids:
  Sites that are designed specifically for kids.
• History:
  Material under another category (such as SEX or VIOLENCE) that is non-fictional and historically significant.
• Medical:
  Material under another category (such as Nudity or Tasteless/Gross) that relates to the study or practice of medicine.
• Moderated:
  A "Message/Bulletin Board" or "Chat" site that prevents offensive material from being posted.
• Text Only:
  Material under another category that contains no pictures. (Used mainly to distinguish written erotica from graphical porn sites.)

Special Rules

Below are special rules that the proxy uses. These are not necessarily based on the content of the page but will help prevent inappropriate ads and links to inappropriate sites from being displayed for your users.

• Block URLs Based on Key Words Contained in the URL:
  This feature blocks based on key words in the url itself. URLs that contain words such as "xxx" are blocked.
• Block Search Engine Results Based on Key Words:
  This feature does not block the use of any search engines but blocks search engine results based on a comprehensive list of terms such as "porn" and "xxx". This rule does not block any other pages based on these key words, only search result pages.
• Block Unfiltered Search Results:
  This feature blocks result pages of search engines that do not filter their results. It will only allow searches in search engines that claim to limit or filter their results.
  http://search.yahoo.com/bin/search?p=women
• Allow Only Trusted Search Results:
  This is the safest option. This feature blocks result pages of all search engines except those that have  powered filtering.