[CentOS] Free and Robust Hotspot Management Software ?

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> - Linux-based solution: Endian Firewall -> 
> http://www.endian.com/en/solutions/technology/endianhotspot/

No hotspot functions in the free and open source version of Endian
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> - FreeBSD-based solution: pfSense (see Captive Portal) -> 
> http://www.pfsense.org/index.php?option=com_content&task=view&id=40&Itemid=43

This works well...
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