Amer Networks E5Web GUI - Manual (Page 543)

Specifying the MAC Address on a Server
The MAC address is entered as a text string in the database of the authenticating server. This text
string must follow the format sent by cOS Core and this is a series of six hexadecimal two
character lower-case values separated by a hyphen ("-") character. For example:
00-0c-19-f9-14-6f
Dealing with Duplicate MAC Addresses
If there is a router between the security gateway and connecting clients, cOS Core will receive
the same MAC address from the router instead of the original client MAC address. This causes
problems because cOS Core is set up by default to not allow clients to duplicate MAC addresses.
The problem is solved by enabling the property Allow clients behind router to connect for the
relevant authentication rule.
Chapter 8: User Authentication
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