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I currently use cisco 6000 switches &amp;&nbsp;2600 routers. I also have 'real secure' IDS but it's not yet implemented.<br />
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There are contractors working on our compound who require network access. We supply them with PCs however we recently discovered that they also plug in their personal laptops onto our lan ports. <br />
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Is there any system available that can detect &amp;&nbsp;prevent such an occurence? Is this a feature available in the switches or do I require software
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I currently use cisco 6000 switches & 2600 routers. I also have 'real secure' IDS but it's not yet implemented.

There are contractors working on our compound who require network access. We supply them with PCs however we recently discovered that they also plug in their personal laptops onto our lan ports. 

Is there any system available that can detect & prevent such an occurence? Is this a feature available in the switches or do I require software

Intrusion Detection System

A vulnerability is a weakness which allows an attacker to reduce a system's information assurance. Vulnerability is the intersection of three elements: a system susceptibility or flaw, attacker access to the flaw, and attacker capability to exploit the flaw. To exploit a vulnerability, an attacker must have at least one applicable tool or technique that can connect to a system weakness, known as the attack surface. Vulnerability management is the cyclical practice of identifying, classifying, remediating, and mitigating vulnerabilities. Other vulnerabilities include security risks, security defects and constructs in programming languages that are difficult to use properly.