ASCII NUL in NAS-Filter-Rule

[Phil Mayers]

On 04/15/2011 09:05 AM, Ruslan Pustovoytov wrote:
> Hi All
>
> My nas box can use attribute NAS-Filter-Rule from radius server to
> construct filter rules per subscriber "on the fly".
> Accodingly to rfc 4849 this attribute should contain ascii NUL (0x00) as
> a delimiter between individual filter rules and at the end of rules.
> Freeradius define this attribute as a string and I do not know how to
> create valid string with nul character.
> I changed attribute type to octets and successfully add null character
> but a whole string converted to hex also and attribute was not readable.
> How to send nul character without changing attribute type ?

Try this:

  update reply {
    NAS-Filter-Rule = "string1\000string2"
  }