Lawful interception based on sniffers in next generation networks

Today, the function of Lawful Interception (LI) in IP service networks is typically performed by systems which are based on the use of traffic sniffers. These LI systems are typically used to determine when a target is attempting to use an Internet Service Provider’s (ISP) services and subsequently to intercept his/her traffic for formatting and transmission to a Law Enforcement Agency (LEA). This paper evaluates whether or not these sniffer based LI systems are suitable for deployment in next generation network such as IPv6 and Mobile IPv6 networks.