What kinds of security threats does the Internet pose? Some, like password attacks and the exploiting of known security holes, have been around since the early days of networking. And others, like the distributed denial of service attacks that crippled Yahoo, E-Bay, and other major e-commerce sites in early 2000, are in current headlines.
Firewalls, critical components of today's computer networks, effectively protect a system from most Internet security threats. They keep damage on one part of the network--such as eavesdropping, a worm program, or file damage--from spreading to the rest of the network. Without firewalls, network security problems can rage out of control, dragging more and more systems down.
The book's complete list of resources includes the location of many publicly available firewall construction tools.
Simon Cooper grew up in Hampshire, where he first fell in love with fly fishing. Only after moving away did he realise how little people knew about the secret world of the chalkstreams.
Chalkstreams are nearly exclusive to England, ranging from Dorset to Yorkshire and including the famous River Test in Hampshire. Every river is special in its own right. Life of a Chalkstream is a lyrical and revealing voyage through the yearly cycle of this unique waterway.
From the remarkable spectacle of salmon, sea trout and brown trout spawning in winter, to the emergence of water voles in spring and the explosion of mayflies in the early days of summer, the author evocatively describes the natural wonders of the chalkstream. He introduces us to the fascinating diversity of life that inhabits its waters and environs – the fish, the angling community, the plant life and the wildlife. We learn how neglect threatens these inhabitants and why the fight to save the chalkstreams is so vital, not only for fishermen, but for anybody who values the beauty of rural England.
Examining the philosophy of writers such as Heidegger, Benjamin, Lyotard, Virilio, and Zizek, and cultural movements such as Italian Futurism, this book marks a timely intervention in critical theory debates. The broad scope of the book will be of vital interest to those in the fields of philosophy, critical theory, cultural studies, politics and communications.