freeradius with pptp

[Alan DeKok]

Xu Tingting wrote:
> 1.What's the difference between radgroupcheck and radgroupreply table?

http://wiki.freeradius.org/modules/Rlm_sql

> 2.I have set  Idle-Timeout    attribute to users in the radreply table,
> but it seems not work. how can i make it works?

  Fix the NAS so that it pays attention to Idle-Timeout.

> 3.If there are same attribute in radgroupreply and radreply, which one
> works?

  It depends on the operator:

http://wiki.freeradius.org/config/Operators

> 4.I have installed freeradius(mysql moudule) with pptp vpn in different
> servers,they work fine,but in my vpn server( radiusclient server) , the
> log file shows that "pppd[3359]: rc_avpair_gen: received unknown
> attribute 85 of length 4: 0x0000003C". and the "radiusd -X" show nothing
> wrong. Does it matter?

  You're sending an attribute that the client doesn't understand.  It
generally doesn't cause any problems.

  Alan DeKok.