Barbarians at the Gate

Tuesday, 27 August 2002, 10:07 AM EST

When discussing network security, many IT professionals associate security technologies with network access control mechanisms such as firewalls, proxy servers and router access control lists. They’re designed to restrict the flow of traffic into and out of corporate networks to reduce the risk of compromise by malicious individuals on the Internet. However, even the best filtering devices do very little to protect a network if Internet-accessible devices are vulnerable to attacks. Malicious individuals can use open communications channels (such as HTTP, e-mail and DNS) to compromise a system on a network remotely, and use that compromised system as a launching pad to attack and compromise other “trusted” systems on the network.

Many of today’s IT infrastructures have become so large, complex and geographically dispersed that IT managers may not learn about the defacement of their Web page in a foreign data center for several days. In the case of one organization, an IT manager learned of a system compromise after a user notified the corporate public relations office. Public relations notified a top corporate officer, who relayed the information to the manager. This isn’t how most of us would like to learn about such occurrences.

The good news is that intrusion detection systems (IDS) can fill such security gaps by providing a way to monitor networks for the presence of active exploits and misuse. This article provides a brief overview of network-based intrusion detection that can help you evaluate your current security infrastructure.

[ Read more ]

Related items




Spotlight

Staples customers likely the latest victims of credit card breach

Posted on 21 October 2014.  |  Multiple banks say they have identified a pattern of credit and debit card fraud suggesting that several Staples Inc. office supply locations in the Northeastern United States are currently dealing with a data breach.


Weekly newsletter

Reading our newsletter every Monday will keep you up-to-date with security news.
  



Daily digest

Receive a daily digest of the latest security news.
  

DON'T
MISS

Wed, Oct 22nd
    COPYRIGHT 1998-2014 BY HELP NET SECURITY.   // READ OUR PRIVACY POLICY // ABOUT US // ADVERTISE //