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    Home Cybersecurity
    • Cybersecurity

    VPN Tools Aid WLAN Security

    By
    Francis Chu
    -
    May 6, 2002
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      VPN Tools Aid WLAN

      Security”>

      The latest security gateway appliances from SMC Networks Inc. help ease 802.11x security concerns by using standard VPN technologies to secure and encrypt wireless communications.

      The SMC EliteConnect 2.0.31 system, released in March, comprises two security appliances: The $5,600 EliteConnect WLAN Secure Server provides a central management point for wireless client authentication and access control; the $2,300 EliteConnect Access Manager enforces the user rights and policies from the Secure Server. Both servers can bolster WLAN (wireless LAN) security by using standard IP Security, Layer 2 Tunneling Protocol and Point-to-Point Tunneling Protocol tunnels to encrypt wireless data transmissions.

      Each EliteConnect appliance has an identical 1.75-inch chassis, with four 10/100M-bps Ethernet interfaces for directly attaching wireless access points and a single 10/100M-bps Ethernet uplink port for connection to the wired LAN. Each unit also has a single hard drive, and both run an optimized FreeBSD operating system.

      Organizations that have a complex WLAN topology will want to deploy multiple Access Managers to handle authentication and rights enforcement at different subnetworks, while a single Secure Server or multiple devices can be used to manage the entire system.

      During tests, eWeek Labs installed the EliteConnect Secure Server and Access Manager on a wired network with a Dynamic Host Configuration Protocol server. We used SMCs 802.11a EZ Connect access points and installed SMC wireless PC Cards on Windows 2000 Professional-based laptop clients. We also used an 802.11b-based 3Com Corp. Access Point 6000 and the matching wireless PC Card on another client.

      We found it easy to set up the EliteConnect appliances using the intuitive Web interface. The appliances can be managed via the command line or the console port.

      The EliteConnect appliances provided wireless client access to the wired network without a hitch, and we were impressed with how quickly we could gain access—without having to configure the access points. Setting up VPN (virtual private network) security on the appliances was a straightforward process, but we would like to see some kind of a utility to help facilitate the client VPN configuration process at larger sites. A tool to automate client VPN security configuration will be a value-add for sites with many wireless clients.

      Secure Server handles client authentication using its own internal database or can authenticate users via LDAP, RADIUS (Remote Authentication Dial-in User Service), Kerberos or Windows 2000/NT Domain servers. The EliteConnect system does not support authentication via digital certificates.

      Secure Server has a Web-based Rights Manager that handles the security and access control policies of all wireless users connecting to the network behind the EliteConnect system. Secure Server runs Apache to host the Web pages used for rights configuration.

      The Rights Manager allows IT managers to set up granular security and access control policies by user, group and location. The rights configuration process can be complex, but the flexibility it affords will be invaluable for sites with multiple users across multiple locations.

      The EliteConnect appliances have no hardware redundancy or failover support, so IT managers will need to purchase a second Secure Server and export the rights to it to preserve company policies. An SMC official said that the next release of the system will include failover support.

      SMC is not the only vendor to offer WLAN security gateways. Vernier Networks Inc. offers several appliances designed for securing WLANs in large enterprises. In fact, SMC and Vernier co-wrote the system software and announced a joint partnership last month.

      ReefEdge Inc. also offers a WLAN security appliance, which uses IP Security to secure wireless traffic. The ReefEdge Connect system costs $7,500 for the server appliance and $1,800 to $5,000 for the bridging devices, depending on access point support. ReefEdge products can be more expensive than SMCs, but ReefEdge supports more access points per appliance and also offers built-in encryption accelerators to enhance performance.

      Technical Analyst Francis Chu can be reached at francis_chu@ziffdavis.com.

      EliteConnect WLAN Secure Server

      and Access Manager”>

      EliteConnect WLAN Secure Server and Access Manager

      USABILITY

      Good

      CAPABILITY

      Fair

      PERFORMANCE

      Fair

      INTEROPERABILITY

      Fair

      MANAGEABILITY

      Good

      SCALABILITY

      Fair

      SECURITY

      Fair

      The EliteConnect WLAN security system from SMC Networks bridges some of the gaps in WLAN security by using standard VPN technology to secure and encrypt wireless transmissions. The EliteConnect system will be well-suited to sites with many wireless clients roaming in large or complex WLAN topologies.

      COST ANALYSIS
      The EliteConnect Secure Server costs $5,600, and the Access Manager costs $2,300. SMCs pricing is aggressive compared with competitors such as ReefEdge and Vernier. The SMC system offers no redundancy or failover features, so enterprises that need such assurance will have to double up.

      + A complete solution for securing and managing WLANs; easy to set up; supports VPN protocols with strong encryption; provides granular rights management.

      – Lacks hardware redundancy and failover support; doesnt support digital certificates for authentication; lacks client VPN configuration utility.

      EVALUATION SHORT LIST

      • ReefEdge Connect
      • Vernier Networks System
      • Bluesocket Inc. WG-1000 Wireless Gateway
      • NetMotion Inc. Mobility

      elite.smc.com/index.cfm

      Francis Chu
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