Citrix Systems has bought QuickTree, a software developer focused on
improving security and performance for XML and Web services. QuickTree
software can be added to network gear to guard against attacks carried
within XML traffic. The company's XML Security Module (XSM) processes
and inspects XML traffic as it passes through these devices, such as
firewalls, load balancers and SSL VPN gateways. Competitors include
Layer 7, Cisco with its purchase of Reactivity and Forum Systems.
Citrix argues that while stand-alone XML appliances are one way to
boost XML processing speeds and secure XML traffic, it is more efficient
to integrate these features in existing network infrastructure; such
equipment would reduce the number of devices in the network and
ultimately scale better than appliances. Citrix says it will integrate
XSM into its AppExpert Policy Builder platform, a GUI tool for creating
policies for applications and users that are translated into rules that
are enforced by Citrix network infrastructure. The company says XSM
will be integrated first with NetScaler, which typically sits between
Web servers and the larger private or public IP network.
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