This server is acting as a Tor exit node. The server is probably not compromised and is most likely acting as expected of a Tor node. Tor is network software that helps users to enhance their privacy, security, and safety online. It does not host or make available any content. Rather, it is part of a network of nodes on the Internet that simply pass packets among themselves before sending them to their destinations, just as any Internet host does. The difference is that Tor tunnels the connections such that no hop can learn both the source and destination of the packets, giving users protection from nefarious snooping on network traffic. Tor protects users against hazards such as harassment, spam, and identity theft. In fact, initial development of Tor, including deployment of a public-use Tor network, was a project of the U.S. Naval Research Laboratory, with funding from ONR and DARPA. (For more on Tor, see http://tor.eff.org/.)
MIT only: usage information