Mac address filtering

Hi all,

I am a italian student (sorry for my bad english) and I'm trying to use nocat for my project of thesis.
I have installed nocat on the same machine (I have used Mysql for database authentication) and after setting all, I have no problem.

I'd like filter user based on Mac address; what's about it?

I think that is possible, changing database table and this parameters in "authserv.conf":

###### Auth service user table settings.
#
# UserTable names the table containing the user ID data.
#
# UserIDField names the column containing the ID that the
#    client uses to uniquely identifying themselves, i.e. their
#    e-mail address or username.
#
# UserPasswdField stores the user's MD5-hashed password.
#
# UserAuthField is deprecated and will go away.
#
UserTable	member
UserIDField	login
UserPasswdField pass
UserAuthField   status
UserStampField	created

GroupTable      network
GroupIDField    network
GroupAdminField admin
 
But I don't know how to use this parameter and what's the meaning of several tables!

Furthermore I see this command in the "gateway.conf":

###### Other Common Gateway Options. (stuff you probably won't have to change)
#
# ResetCmd, PermitCmd, DenyCmd -- Shell commands to reset,
#   open and close the firewall. You probably don't need to
#   change these.
#
# ResetCmd	initialize.fw
# PermitCmd	access.fw permit $MAC $IP $Class 
# DenyCmd	access.fw deny $MAC $IP $Class 

I don't know how to use this!
Can anyone help me please?  

Thanks for interesting!

[email protected]


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