Enter   the   IP   address   of   the   primary   RADIUS   server   and,   if   applicable,   the 
 secondary RADIUS server. 
 Enter   the   RADIUS   shared   secret   for   the   primary   server   and,   if   applicable,   the 
 secondary RADIUS server. 
 In  the  field,  enter  the  UDP  authentication  port(s)  used  by  your  RADIUS  server(s)  or 
 click the  Default  button to enter  1812  . 
 In   the   field,   enter   the   UDP   accounting   port(s)   used   by   your   RADIUS   server(s)   or 
 click the  Default  button to enter  1813  . 
 Choose   between   Device   Name  ,   LAN   MAC  address  ,  Device  Serial  Number  and 
 Custom Value 
 Check this box to deny all connection attempts by private IP addresses. 
 To   create   a   custom   subnet   for   guest   access,   enter   the   IP   address   and   choose  a 
 subnet mask from the drop-down menu. 
 To  block  access  from  a  particular  subnet,  enter  the  IP  address  and  choose  a  subnet 
 mask from the drop-down menu.