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StealthWatch employs a completely different approach to traditional IDS, based on signature recognition. Instead of looking for signatures, it 'learns' what kind of activity is normal on your network and looks for abnormal events. Behavior-based IDS has some advantages over signature-based IDS, because less processing power is required and previously unknown attacks can be detected.

This product concentrates on hard disk data encryption. However , it does include a VPN client integration for IPCrytor VPN gateways, which is a remote access solution. Encryption may be in relation to your own local hard drive, or a specific directory or folder on the corporate LAN.

If you are looking for a little more than simple content filtering, it is worth taking a look at WebWasher. Aimed at the medium to large business, it provides extensive content filtering and a number of other valuable features.

We've looked at PoliVec Builder in the past, a policy development tool from the same stable. Part of the PoliVec suite, PoliVec Enforcer integrates seamlessly with its policy development tool counterpart to keep the enterprise secure.

Therefore, policy can be locked down to stop system changes and policy non-compliance from weakening the protected network infrastructure. Extensive reporting enables a precise picture of your network and real-time monitoring ensures that notification of problems can be dealt with in a timely fashion.

Policy enforcement is only as good as your management system allows, so a serious vulnerability could go unnoticed without prior knowledge of the problem.

Security Expressions allows deployment using no-agent technology to ensure that, once installed on either Windows NT or 2000 systems, the administrator can add machines within a group, that are required to adhere to the policies that pertain to that group.

Cobion's OrangeBox Web is a very similar product to DynaComm i:filter. Designed to integrate with a proxy server (for example, Microsoft ISA on Windows 2000/XP), it is also happy to sit on a number of popular Linux and Unix platforms. It can also be used as a proxy server in its own right if you have a small or medium-sized intranet network.

NetIQ MailMarshal was the sleeper hit of the recent email security Group Test. Can this New Zealand-based software development center make it two in a row with its WebMarshal browser control? The answer is a resounding yes.

First there was Sniffer, Network Associates' traffic capture and analysis tool, which rapidly carved itself a position as the tool of choice for network engineers of all kinds. Then there was Sniffer Wireless, bringing the capabilities of the Sniffer engine to 802.11 wireless networks, a logical extension to the Sniffer brand which already supported a range of environments including LANs, remote networks and telecom networks. Now we have Sniffer Wireless PDA, porting that wireless analysis suite to a handheld platform, targeting network managers and security professionals with an overriding need for portability.

Last year we looked at the LapLink Gold solution, which has continued to improve over the years. This year is no exception. Now integrating three products into one to deliver LapLink Everywhere DELUXE, LapLink, Inc. is determined to improve remote access capabilities for the user without compromising on security.

With the first product in this suite you can access your PC from anywhere using a web browser to retrieve email, files or folders. LapLink Everywhere is a service that is provided for one year after purchase as a part of the LapLink Everywhere DELUXE suite.

EnCase from Guidance Software has established itself as the leading tool for forensic investigators. Perceiving a need for similar tools in the enterprise space, the company announced EnCase Enterprise Edition, bringing most of the functionality enjoyed by criminal forensic investigators to corporate users.

Last year a flaw in the way Microsoft applications process JPEG image files caused widespread alarm. The exploits could create a jpeg file formatted to trigger an overflow in a common Windows component and open a command shell on a vulnerable Windows system.

Famatech's Remote Administrator provides a simple, uncomplicated remote control and file transfer facility between Windows systems.

Hardware located in the main office on your LAN can allow remote workers punctual and user-specific access to work areas that need to remain secure during any remote communication periods. The ability to use this type of access improves productivity and ensures that employees are able to work remotely without compromising your network security.

One very important area of email security is encryption. Unless you are using leased lines or virtual private networks (VPNs) to transmit information, the moment an email leaves your firewall it is at the mercy of the internet. Emails can be intercepted and read without your even knowing about it, which poses a terrible risk for corporate information. However, encrypting the email does give you a high degree of ­ reassurance.

PC Guardian provides a nifty little program called Encryption Plus Email that allows you to encrypt email body text and any attachments. The email product is very easy to install - full installation of the administration program takes less than a minute. The product is designed for individual use, so the administrator installs it on each workstation, then configures it centrally and rolls out the user files across the network. Encryption Plus Email is only available for Lotus Notes and Microsoft Outlook, but since these two cover a large proportion of companies this shouldn't be a problem.

One of the major headaches for network administrators is bandwidth consumption. However big your pipe into the internet happens to be, it's the last few feet from the server to the desktop that is the killer. A few years ago, people took their eye off the ball where bandwidth is concerned, as it was assumed that everyone would be migrating to the fatter cables of category 6. However, standards issues and an unwillingness to spend money in today's uncertain times means bandwidth is still at a premium. Files have not stopped growing, with multimedia data bringing many networks grinding to a halt.

Matters would be considerably worse if it weren't for the godsend that is PKZIP. Files are compressed by as much as 90 percent, allowing hefty files to shrink to more manageable and less bandwidth-hungry sizes. Probably the most ubiquitous non-Microsoft application around, PKWARE's PKZIP is probably the best compression program available - well, they did invent the Zip format.

This solution is probably more suited to the smaller business model as it requires separate installation at every workstation, unless you utilize the separate deployment console BitDefender Enterprise. This allows the installation, scanning, uninstall or the change of settings on all machines in the network. It can also be deployed across the larger network using wireless application protocol (WAP).

Kaspersky Anti-Virus supports a number of environments, which include Linux, Unix (Free­ BSD, BSDi, OpenBSD, Solaris), Novell NetWare, MS Exchange, Lotus Notes, Domino, Sendmail, Qmail, Exim, Postfix and all the Windows versions.

This solution is probably more suited to the smaller business model as it requires separate installation at every workstation, unless you utilize the separate deployment console BitDefender Enterprise. This allows the installation, scanning, uninstall or the change of settings on all machines in the network. It can also be deployed across the larger network using wireless application protocol (WAP).

Kaspersky Anti-Virus supports a number of environments, which include Linux, Unix (Free­ BSD, BSDi, OpenBSD, Solaris), Novell NetWare, MS Exchange, Lotus Notes, Domino, Sendmail, Qmail, Exim, Postfix and all the Windows versions.

I suppose this review may be thought of as two. The SecuGen EyeD Hamster fingerprint biometric reader and the SecuIBAS 'internet' authentication suite software.