Lawful intercept is a specific method of viewing traffic passing through a network device.
It would be straightforward to build something, without it being a standard feature of vendor network devices, using a different standard feature of literally any enterprise level network device: port mirroring.
https://en.wikipedia.org/wiki/Port_mirroring
Port mirroring exists for many reasons and is widely available on switches for things like IDS, troubleshooting, and performance monitoring (e.g. generating netflow on an different device than the switch).
To use Cisco lawful intercept, you must already hold the highest admin privileges on the device.
Cisco almost certainly built this feature for the US agencies. The ones it has been supplying internet routers to since the commercialisation of routers, a short time after the creation of the internet by... US agencies.
Lawful intercept is a specific method of viewing traffic passing through a network device.
It would be straightforward to build something, without it being a standard feature of vendor network devices, using a different standard feature of literally any enterprise level network device: port mirroring. https://en.wikipedia.org/wiki/Port_mirroring
Port mirroring exists for many reasons and is widely available on switches for things like IDS, troubleshooting, and performance monitoring (e.g. generating netflow on an different device than the switch).
To use Cisco lawful intercept, you must already hold the highest admin privileges on the device.
Cisco almost certainly built this feature for the US agencies. The ones it has been supplying internet routers to since the commercialisation of routers, a short time after the creation of the internet by... US agencies.