 for any ATM product or feature that can be defined without the need for programming. Nebula also offers an ATM-specific, web-based reporting and plotting capability, authenticated and encrypted network traffic, OSS for Telecom Networks confining SNMP traffic to secure domains, protection against IP spoofing, replaying and capturing and user ID and application access restriction on nodes. 14.4.1 Single Interface to Data and Voice Networks AT&T offers a suite of extranet-based network management capabilities that will make it easier for business customers to monitor and control their corporate data and voice networks. AT&T Interactive Advantage provides a secure integrated plat- form where business customers can access network management tools through a single interface. Security features enable customers to restrict employee access so that the infor- mation can be protected within their own organization. For instance, the voice net- work manager might have access limited to voice services only, or the data manager might have access limited according to the employee's security authorization. Businesses can obtain information about their corporate networks from a single source, including details on performance, maintenance, repairs, provisioning and service orders. Interactive Advantage also offers collaborative tools where customers can communicate with their AT&T support teams through electronic bulletin boards where reports and messages can be posted. Voice Network Services management tools are available through Interactive Advantage. Customers can monitor their corporate networks' real-time call attempts, and call-completion data online to manage their toll-free facilities and resources better. Network and traffic data reports can be electronically retrieved for proactive network planning to help managers achieve optimal circuit performance. Potential network problems or even opportunities can be quickly identified using online per- formance analysis tools for on-network and off-network calling patterns and tru