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Anti-Censorship URL Justify Port Scanning?
posted by scubacuda on Wednesday March 19, @02:25PM
from the nmap-sS-O-www.whitehouse.gov dept.
Censorship According to Wired, the University of Toronto's Internet Censorship Explorer permits people test the limits of national and organizational Internet-blocking schemes. Users enter a target URL (and a country), and the software then scans the ports of available servers in that country, looking for open ones to connect on from behind that country's firewall. Many consider port scanning a gray area, as it's often used by various hackers to find vulnerabilies that can be exploited. (I guess it all depends how invasive you think port scanning is in the first place.) Update: /. responds

According to ICE's webpage:

1. The ICE browser does not port scan anyone, it issues a request for a URL to a proxy server and returns the results to the user. There is no scanning of any kind.

The process of scanning occurs when open, publicly accessible proxies are identified by researchers in the Citizen Lab. The only ports checked are 80, 8080, and 3128, no others.

In many cases proxies are identified based on the fact that they are listed on websites that catalog lists of open, publicly accessible proxy servers. In such cases NO scanning is done.

2. The result is determined by the behavior of the proxy and/or the censoring technology in place in a given country. It may result in generic 404 or gateway timeout errors or it may return a "this is blocked" type page. The results will vary.

3. There are bugs in the ICE browser, it does not deal will all proxy behaviour, yet. Also, a proxy may be down at any given time -- the result you get may be a result of ICE's inabilty to connect to the proxy server.

4. The author of the wired article should have spoken with the person who designed and coded the ICE browser.

Profile of Average Virus Writer | The Adventures of Wendy Willcox and Her Dog Willis  >

 

 
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