ipredirectd has functionality similar to netcat but with some extra features. Multiple clients and full logging of network traffic are supported. It can also manipulate incoming and outgoing text traffic. Manipulation is based on pattern files that support regular expressions. This feature is probably most useful with HTTP. The software is smart enough not to apply regular expressions on non-HTML data by reading the content-type header. One possible usage is redistribution of pre-authenticated Web pages in foreign domains by replicating authentication and session cookies.