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Open Source Network Access Control Solutions

FreeNAC is a popular open source NAC solution and has the ability to integrate with and use 802.1x and Cisco's VMPS port security mode. Althouh freeNAC is a free and open source, you can optionally purchase support.

PacketFence is a free and open source NAC solution which provides a rich feature set including support for remediation via a captive portal, wireless network management, VOIP support and more.