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January 31, 2006 (Network World) -- Mirage Networks this week updated its network access control appliance, adding the ability to scan LAN- and WLAN-attached devices running banned network applications or protocols.
The Mirage NAC device attaches to a LAN switch and inspects PCs and laptops by working with end-point security software vendors, such as FoundStone and NetForensics. The device then re-routes traffic from clients that contain dangerous software or settings, or client traffic that is suspicious or violates access policies.
Industry watchers predict explosive growth for NAC technology. Infonetics Research says sales of NAC appliances will increase by more than 3,000% over the next several years.
The latest release of Mirage NAC, version 3.0, builds some of the end-point inspection tasks done by partner software products into the device, the vendor says. The device can now detect commonly banned traffic types running on clients, such as peer-to-peer networking or the presence of FTP or Web servers. The NAC appliance can either block the devices' access to the network, or quarantine suspicious traffic into secured virtual LAN segments.
Mirage says that third-party software is still required for deeper client inspection, such as detecting unpatched operating system or antivirus software.
The Mirage says its box works by tinkering with the Address Resolution Protocol (ARP) tables on PCs and LAN switches. ARP provides the link between Layer 2 media access control (MAC) addresses and Layer 3 IP addresses on clients attaching to a LAN. Manipulating ARP allows Mirage appliances to control what clients can do on a network by blocking access, redirecting traffic to quarantined VLANs (where unpatched machines can safely update required software), or moving traffic to authentication servers.
Mirage says it also plans to release a new application programming interface (API) for its NAC product. Vendors of client inspection, antivirus and compliance software can integrate their client software faster with Mirage products. The API is expected to be available in the third quarter.
Reprinted with permission from
For more information about enterprise networking, go to NetworkWorld.comStory copyright 2006 Network World, Inc. All rights reserved.
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