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October 12, 2007

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Dominic Wilde

Castan,

Thanks for the feedback, and let me address your comments:

1) The lack of performance for in-line security solutions has and always will be a concern for Enterprises. However, Nevis was founded with the vision of solving the compromise between deep security inspetion and multi-Gbps LAN performance. Our proprietary ASIC delivers on that vision (more than 10Gbps sustained full security throughput) and has been demonstarted and deployed in many highly demanding Enterprise environments running mission critical and latency sensitive apps.

As for the E.P. being a "cut of line", I assume you are referring to it being a single point of failure? Again, we designed our products to account for these issues and provide full active/active and active/passive HA along with fail-thru.

2) Endpoint to Endpoint contamination is certainly a concern as you've pointed out, and any solution that sits higher in the network won't be able to fully control and contain that, particularly out of band solutions. The right answer to this is the Nevis Secure Switch. A 48 Gigabit port wiring closet access switch that fundamentally integrates all of the different security elements (NAC, per port/user application intelligent firewall and full IPS) on every port at full switching speeds and latencies. We also have an appliance that sits higher in the network, but because it's in-line it can meaningfully detect and selectively block malware attempting to reach higher in the network. OOB NAC solutions claim that they can prevent endpoint to endpoint contamination by controlling downstream switch ports, but that approach while useful for some things is overly complex and flawed. First you have to hope they support your switches and firmware, then you have to configure everything (I should also mention you have to reconfigure them everytime you make a network change), but worst of all they fail on their claims to control pollution between endpoints. The simple reason for this is that by the time they detect an infection and attempt to block the port by contacting the switch, the malware has long gone, and worst of all, it is headed deeper into your network where your critical infrastructure and data assets lie. An in-line solution can prevent this happening.

Cheers, Dom

Castan

Congratulations for your analysis.
You wrote "Don't rely on enforcement on the endpoint, the network is the place to do it". I have two comments.
1)You recommend the in-band mode. But, there is a lack of performance. The Enforcement point is now a "cut of line".
2)There is also a security issue. Each station in front of the E.P. can now pollute the other stations of the VLAN.

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