Solutions for Internet Service Providers
Across the world, national governments are mandating, and law enforcement agencies are demanding, similar interception capabilities for Internet based services as they are common for circuit-switched communication networks. Utimaco LIMS provides several solutions for monitoring Internet access as well as individual IP-based services.
Email Interception
As illustrated in the example above, e-mail interception is commonly realized with network probes that are connected to the network via taps or switch span-ports (passive interception). The probes monitor the entire e-mail traffic of a provider and forward intercepted e-mails to the LIMS Mediation Device. Encrypted e-mail protocols (e.g. POP3s, SMTPs, IMAPs) can be decrypted by a LIMS Decoder if the server certificate is known.
Active interception is feasible with some e-mail servers that provide integrated interception capabilities.
VoIP Interception
Lawful interception of Voice-over-IP (VoIP) generally follows a two step process as VoIP signaling is separated from the VoIP content. At first, call signaling needs to be monitored by the VoIP call agent (softswitch) for the interception of call events of a person under surveillance. With the addresses and routing information detected a network router or media gateway can then be provisioned to capture the call content of the interception target.