Proxy server programs like Tor and Psiphon could also mask the source of changes on the site.

FORBES: Magazine Article

He is also accused of using a proxy server to further avoid detection.

BBC: 'Lulzsec hacker' latest to be arrested in US

Users find themselves bouncing from proxy server to proxy server to get around the firewalls put up by China.

CNN: ASIANOW - TIME Asia | Asia Buzz: Cat and Mouse

And I'll also include a guide on setting up a Proxy server, this step is optional for those without static or semi-static IP's.

ENGADGET: How-To Hacks finalist: How to set up your own PSP web portal

Many of those posting messages said they could not connect directly to World of Warcraft but could get access when they used a proxy server outside Iran.

BBC: Blizzard cuts off Iranian access to World of Warcraft

According to the Swiss security researcher who runs Abuse.ch, the use of free proxy services like Glype, Tor, and others have an option which allows administrators to log the traffic flowing through their proxy server on the Glype network.

FORBES: Use A Proxy Server, Feed An Intel Service

In a patent app made public this month, RIM's lab geeks describe setting up a proxy server right on the phone that would intercept the browser's web requests and bundle, compress, and send them to a gateway on the other end (BIS, we presume) that would know how to deal with the packet.

ENGADGET: RIM patent app will have you barely browsing the web at incredible speeds

Features include name-and-password log-in support, file and directory caching for quick access, firewall and proxy-server support, and UNIX file attribute support.

CNN: Downloads to improve your Web experience

The MobileSpan Gateway is a central server application that acts as a transparent browser and document proxy on the corporate network.

FORBES: Advantages of the MobileSpan Approach