Methods
MICT blocks indirectly by informally “requesting” the blocking of websites by Thailand's 54 commercial and non-profit Internet Service Providers (ISPs). Although ISPs are not legally required to accede to these “requests”, MICT Permanent Secretary Kraisorn Pornsuthee wrote in 2006 that ISPs who fail to comply will be punitively sanctioned by government in the form of bandwidth restriction or even loss of their operating license. This is a powerful compulsion to comply.
Websites are blocked by Uniform Resource Locator (URL) and/or IP address. However, only about 20% of blocked sites are identified by IP address; the remaining 80% are unable to be identified at a specific physical location. If these sites could be identified as being located in Thailand, legal action could be taken against their operators. Thus, lack of IP address is a major oversight.
Several technologies are employed to censor the Internet such as caching, blacklisting domain name or IP address, or simply redirection to a government homepage. Blacklisting the website is beneficial for this kind of web censorship as the webmasters would be unaware that their websites are being blocked. This measure is said to be used to make unpleasant websites appear unavailable.
Many censored web sites previously redirected the user to a site hosted by the Ministry of Information and Communication Technology (MICT) which states that the requested destination could not be displayed due to improper content.
Censorship of the Internet in Thailand is currently for website access only. Unlike China's “Great Firewall”, which censors all Internet traffic including chat conversation via Instant Messaging, Thai Internet users are still able to interact with other users without being censored. However, current policy is to use a system of transparent proxies so that the user receives system, server, TCP and browser error messages when trying to access blocked sites leading the user to believe that the failure is caused in the Internet itself.
Search engine giants, Google and Yahoo!, were approached to investigate the potential capability for blocking access to their cached web pages in Thailand, a common technique used to circumvent blocking. The search engines were also asked about keyword search blocking which is used effectively in China to censor the Internet. Google, at least, has made public a statement that it has no intention of blocking any sites to users in Thailand.
Read more about this topic: Internet Censorship In Thailand
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