Seattle-based Lockdown Networks and switching and routing firm Foundry Networks said Thursday that Lockdown has joined FOundry's Ironshield 360 Security Alliance. The alliance is a group of companies organized by FOundry to provide a comprehensive security solution. Lockdown's Network Access Control (NAC) products will be integrated with Foundry's infrastructure products. Lockdown's NAC products are used by enterprise IT firms to ensure that rogue and unwanted devices are not allowed on networks, and that endpoints conform with IT and security policy.