| Providing good internetwork security and remaining current on new
hardware and software products is a never-ending task. Every network
security manager aims to achieve the best possible security because
the risks are real and the stakes are high. An enterprise must decide
what level of security is required, taking into account which assets to
protect as well as the impact of the measures on costs, personnel, and
training. Perfect security is an impossibility, so one must aim for the
best possible security by devising a plan to manage the known risks
and safe-guard against the potential risks. Defining the enterprise security
policy is the first step in implementing good security.
Many security tools are available to help reduce the vulnerability of
your network. For example, a firewall can be deployed at the network
perimeter to offer an effective protection against many attacks. But a
firewall is only one piece in the network security infrastructure. Good
host security, regular assessment of the overall vulnerability of the network
(audits), good authentication, authorization, accounting practices,
and intrusion detection are all valuable tools in combatting network
attacks and ensure a network security manager’s “peace of mind.”
Cisco Systems is the worldwide leader in IP networking solutions.
They offer a wide array of market-leading network security products:
dedicated appliances, routers, and switches, most of which come with
some form of security software. Currently, Cisco products comprise
much of the Internet’s backbone. An in-depth knowledge of how to configure
Cisco IP network security technology is a must for anyone
working in today’s internetworked world. This book will provide you
with the hands-on Cisco security knowledge you need to get ahead, and
stay ahead. |
