of Electrical & Computer Engineering, UIUC Giang T. We built a proof-of-concept prototype that uses encrypted VoIP for this downstream channel and demonstrated the feasibility of using the CensorSpooferĬensorSpoofer: Asymmetric Communication using IP Spoofing for Censorship-Resistant Web Browsing Qiyan Wang Dept.
The upstream channel hides the request contents using steganographic encoding within Email or instant messages, whereas the downstream channel uses IP address spoofing so that the real address of the proxy is not revealed either to legitimate users or censors.
CensorSpoofer de-couples the upstream and downstream channels, using a low-bandwidth indirect channel for delivering upstream messages (URLs) and a high-bandwidth direct channel for downloading web content. We propose a new framework for censorship-resistant web browsing called CensorSpoofer that addresses this challenge by exploiting the asymmetric nature of web browsing traffic and making use of IP spoofing. of Electrical & Computer Engineering, UIUC ABSTRACT A key challenge in censorship-resistant web browsing is being able to direct legitimate users to redirection proxies while preventing censors, posing as insiders, from discovering their addresses and blocking them. of Computer Science, UIUC Nikita Borisov Amir Houmansadr Dept. Houmansadr, Amir Borisov, NikitaĬensorSpoofer: Asymmetric Communication using IP Spoofing for Censorship-Resistant Web Browsing Qiyan Wang Dept. CensorSpoofer: asymmetric communication using IP spoofing for censorship-resistant web browsing CensorSpoofer: asymmetric communication using IP spoofing for censorship-resistant web browsing