PacketFence是一个开放源代码的网络访问控制工具，它被积极的维护着并且已经被一些大的机构采用。它能够有效的保证网络的安全，包括从小的到非常大的不同种类的网络。
PacketFence具备的特色功能包括：注册登记新的网络设备，检测非正常的网络活动(与snort配合)，隔离有问题的网络设备，基于已登记注册的和有计划地漏洞扫描。PacketFence
1.9.0版增加了对64位系统的支持，新增对一些硬件的支持包括 Cisco, Foundry, HP和SMC，新增节点分类功能，提升了错误处理功能，升级了文档，提升了性能，改进了错
误报告和一些其它的东西。
工具更多信息及下载地址参见这里：http://www.packetfence.org/en/home.html
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PacketFence is a fully supported, trusted, Free and Open Source network access control (NAC) system. Boasting an impressive feature set including a
captive-portal for registration and remediation, centralized wired and wireless management, 802.1X support, layer-2 isolation of problematic devices,
integration with the Snort IDS and the Nessus vulnerability scanner; PacketFence can be used to effectively secure networks - from small to very large
heterogeneous networks. Among the different markets are :
•banks
•colleges and universities
•engineering companies
•manufacturing businesses
•school boards (K-12)
This release has 64 bit support, new hardware support from Cisco, Foundry, HP, and SMC, and a new node categorization feature. It has improved
error handling, improved documentation, performance improvements, improved error reporting, and many other things.
Get more from here:http://www.packetfence.org/en/home.html
[+]Reference:
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http://packetstormsecurity.org/filedesc/packetfence-1.9.0.tar-gz.html