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IIS Anti-Leech Sniffer Dog creates 64-encryption system to encrypt URL. The Dog will verify if the encryption code is illegal, if not it will be regarded as leeching link. The encrypt code includes client IP, file name and other visiting info, so every encrypt is unique. The encrypted URL displays like http://www.domain.com/movie.rm?urlid=XXXXXXXXXXXXXXXXXXXXXXXX, and “urlid=XXXXXXXXXXXXXXXXXXXXXXXX” is the encrypt code. <br>
Encryption parameters are required in the process of encryption. You can set up in this page.

The following table explains the function of each item.
| Encryption Key | Input an encryption key. Modify the default value is suggested. Please attention that the encryption key here should be the same as the one in the web host list. |
| URL expire option | URL expires after the interval time. And the URL IDs are different after each re-flash |
| Verify file name | Choose this option if you want file name information to be included in the encryption code. Sniffer Dog will verify if the file name is illegal. An encryption code is correspondent to a file name |
| Only encrypted URL can be visited. URL without encryption code is regarded as illegal leeching link | Check this box to define only encrypted URLs can be visited |
| Parameter name | To prevent the name of parameter conflicts with the existing program, you can modify it. (e.g. modify http://domain.com/movie.rm?urlid=XXXXXXXXXXXXXXXXXXXXXXXX to http://domain.com/movie.rm?movielid=XXXXXXXXXXXXXXXXXXXXXXXX) |