Nominum blocks adult content on Virgin Media's Tube Wi-Fi network

Virgin Media has chosen Nominum to support its London Underground wireless broadband service by deploying Domain Name System-based content filtering across the network.

Nominum's content filtering application will be used to prevent passengers on the Tube connecting to the cable company's Wi-Fi infrastructure to access adult material.

A pilot programme utilising existing hardware and software components in the network was conducted ahead of the rollout, with Nominum claiming the trial revealed a high level of integration with Virgin's architecture was "evident from the start".

Jon James, executive director of broadband at Virgin Media, said Nominum was able to meet the network operator's "ambitious and demanding timeline" and is now delivering a high-quality solution for its Wi-Fi service.

"After carefully considering our options, we decided that Nominum's solution woven into our existing technology would be a successful implementation and help set us up for future applications and services," he explained.

Earlier this month, Virgin announced the wireless internet proposition - which has been deployed to more than 40 Tube stations - saw over 100,000 passengers log on during its first four weeks in operation.

By the end of the year, it is thought that around 120 stations will be connected.