PORKINet: Proxy Network Integrator

The authors present PORKINet, a scalable peer-to-peer network of web proxy servers integrated to allow transparent access to websites that restrict access based on source domain. This allows security policies to be structured around content rather than domains. A client can connect to any PORKINet web proxy and access all content that is available to the network. It maintains acceptable performance and high availability by caching routes to eligible web proxy servers while falling back to a distributed hash table in the event of server failures. Periodic heartbeat messages and timeouts are used to ensure that nodes with proper access capabilities can be found when needed.