"PS" <[EMAIL PROTECTED]> wrote:
> ... if a nas sends invalid shared secret I still get it's access
> request packet processed, but only the User-Password is modified
> (with trash).

  That's the way RADIUS works.

> As I found out, there is no such problem for accounting packets -
> they are automatically rejected.

  That's the way RADIUS works.

> Can I make freeradius reject (or even better leave without a
> responce) registration packets that do not come from specified ip
> address and don't have correct shared secret?

  You can filter by IP, but not by incorrec shared secret.  There is
*nothing* in the protocol for Access-Requests that would let you
discover that the shared secret is wrong.

  Alan DeKok.


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