Product Overview The Agilent Network Tester is the most powerful and flexible solution for testing the real-world performance and stress resilience of network security and application-aware devices and networks. Network Equipment Manufacturers, Service Providers and Network Operators use Network Tester to analyze application-aware device real- world performance characteristics under peak levels of load and stress expected in real network environments. This allows test engineers to confidently assess equipment’s ability to perform without disrupting service or compromising quality of user experience.