Questions regarding trimming User-Name attribute via filter.

Matthew Newton mcn4 at
Wed Sep 9 22:59:09 CEST 2015

On Wed, Sep 09, 2015 at 08:43:53PM +0000, Pro Green European via Freeradius-Users wrote:
> What I want to achieve is, that anything that comes before the
> last five characters should be removed from the User-Name
> attribute, and only the last five characters should be left as
> User-Name.
> I understand that I have to do this in
> /etc/raddb/policy.d/filter somehow, but I fail to see how.

man unlang

sites-enabled/default, authorize {}:

  if (&User-Name =~ /(.{5})$/) {
    update request {
      User-Name := "%{1}"


Matthew Newton, Ph.D. <mcn4 at>

Systems Specialist, Infrastructure Services,
I.T. Services, University of Leicester, Leicester LE1 7RH, United Kingdom

For IT help contact helpdesk extn. 2253, <ithelp at>

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