In last month’s issue of Admin Workshop, we introduced tools that help admins get services up and running. This month, we will show how you can use the Ident protocol to associate a user name with a TCP connection.

Anonymous remail protects the sender’s identity against potential eavesdroppers. The Mixmaster protocol gives users a mature technology for anonymous remail, and the text-based Mixmaster client is an example of a free remailer application.

Socks is a universal proxy protocol for TCP and UDP that allows internal hosts to securely pass the firewall and authenticates users. This article describes the latest version of the Socks proxy protocol and shows how to implement it.

Content filters protect a web user’s privacy and keep the flood of unsolicited advertising at bay. We’ll show you a pair of popular Open Source content filters.

A new form of phishing attack deposits an HTML tag on the vulnerable service to trap users into authenticating.

A proxy server provides safer and more efficient surfing. Although commercial proxy solutions are available, all you really need is Linux and an old PC in the attic.

Many Websites log IP addresses and access times to identify users. If you don’t want to wind up as data in someone’s market research, the Java Anonymous Proxy will keep your surfing secret.

Some people don’t mind leaving traces of their IP address wherever they go, others prefer to use a tool like The Onion Router.