How does the popular Nmap scanner identify holes in network security? In this article, we examine some Nmap analysis techniques.

A busy proxy server is something that no self-respecting admin should leave to its own devices. The Squid logfile analyzer, dubbed Sarg by its author, helps you keep your Squid servers on track.

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

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.

Like a poison apple, a Web program that is tasty on the surface may contain a highly dangerous core. Admins who do their own programming need to follow secure programming practices to avoid the bitter taste of insecurity.

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.

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

The resolver is the window from your computer to the global DNS system. Simply typing a URL awakens a link to computers all over the world.