The battle for secure remote access to the corporate network is dominated by two contenders -in one corner are IPsec VPNs and in the other SSL VPNs. IPsec VPNs are frequently included with general-purpose security appliances and so are relatively cheap to implement. But they can be complex to operate and this is where SSL VPNs win out; a key feature is the minimal client configuration - users simply connect via a standard web browser. Aventail moved into the SSL VPN market two years ago and now offers a pair of appliances. The EX-1500 on review is aimed firmly at enterprises and supports up to 1,000 concurrent connections.
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