Domain Fronting Vs Proxy
You could connect to a proxy server located within the.
Domain fronting vs proxy. This way you can circumvent censorship as long a the cdn isn t blocked because the real destination is unknown to a observer. New access log fields. Mon 11th feb 19.
For those that are relying on either a transparent proxy for example azure firewall or aviatrix or an http connect proxy squid being a popular open source product this can be a major. Fronting hides its address from the censor and allows parties to evade blocks and access it. This behaviour is controlled by the hardware proxy option associated with a bridge domain.
In the course of this research it quickly became clear that domain fronting is currently possible despite news reports from a year ago claiming that it had been disabled by the major cloud providers. It send internet traffic to a cdn in this case google over an encrypted connection and the cdn then passes back this info to the proxy. To read more about domain fronting.
In circumvention scenarios the domain in the hosts header will be a proxy. You can add the following new access log fields to an access log format to help track possible domain fronting attempts. Let s say for example you are physically located in new york city and you want to log into a website that is geographically restricted to only people located in the united kingdom.
The utility of domain fronting is not limited to https communication nor to accessing only the domains of a specific web service. Hardware proxy by default layer 2 unknown unicast traffic is sent to the spine proxy. This policy would block any request if the http connect host differs from the host in the url.
The hosts header domain being a proxy would be blocked by the censor if accessed directly. Domain fronting other sub techniques of proxy 4 id name. Domain fronting has been around for years and i ve always understood the concept but never actually looked at exactly how it works.