From: cong818@gmail.com   
      
   Hi,   
      
   I am trying to set up a vpn service using radius+mysql+pptpd+pppd, so   
   far everything is right that user in table radcheck can login using the   
   config'ed password. Now I want to control the behavior of a ppp   
   connection from the server side, e.g. forcing disconnecting a user.   
      
   pptpd is not a decent NAS that supports CoA (correct me?). So I can't   
   use radclient to send a CoA disconnect message.   
      
   Then people say using Acct-Interim-Interval and Session-Timeout in   
   radius accounting reply message to inform the NAS to timeout a   
   connection. As a start, I tried to set the Acct-Interim-Interval value   
   to 5 secs in auth reply message. I can see from the log that the   
   Acct-Interim-Interval message is successfully sent but seems pppd-radius   
   plugin doesn't respect it.   
      
   Am I doing right?   
      
   I failed to find the whole list of attributes that pppd-radius supports.   
   Can anyone please point me to?   
      
   Or if pptpd/pppd/pppd-radius combination is incapable to do simple CoA,   
   what alternative NAS should I turn to?   
      
   Thank you!   
      
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