Who creates the software for real-time IP traffic monitoring? Narus is a company named in a Wired story about Whistle-Blower Outs NSA Spy Room. The page about NarusInsight says they provide,
CALEA- and ETSI-compliant modules for lawful intercept featuring a robust warrant management system. Capabilities include playback of streaming media (for example, VoIP), rendering of Web pages, examination of e-mails and the ability to analyze the payload/attachments of e-mail or file transfer protocols.
The Wired story is about an EFF Class-Action Lawsuit Against AT&T that accuses “the telecom giant of violating the law and the privacy of its customers by collaborating with the National Security Agency (NSA) in its massive and illegal program to wiretap and data-mine Americans’ communications.”