Attribute filtering with regex problem

John Horne john.horne at
Tue Oct 24 14:51:18 CEST 2017


(Using Freeradius 3.0.13)
I have been modifying our 'mods-config/attr_filter/post-proxy' filter file to
allow through a couple of 'Service-Type' attribute values after proxying.
However, to allow more than one value the only way I can get it to work is to
specify the value as 'ANY'. (Running 'radiusd -X' shows the access-accept
packet being sent out with the attribute.) In particular, I have been trying to
use a regular expression but the attribute always gets filtered out.

This works:

  Service-Type =* ANY,

I have also tried:

  Service-Type =~ /Framed-User|Login-User/,
  Service-Type =~ "Framed-User|Login-User",
  Service-Type =~ "/Framed-User|Login-User/",
  Service-Type =~ Framed-User|Login-User,

These all failed. Running 'radiusd -X' showed no error or warning with the
filter files syntax for the entry, but showed the acess-accept packet being
sent out without the attribute. I finally repeated the above regex entries just
using 'Framed-User' (in case the '|' was causing a problem). These too caused
the attribute to be filtered out.

So my question is, what is the correct syntax for using '=~' with a regex in
the post-proxy filter file?



John Horne | Senior Operations Analyst | Technology and Information Services
University of Plymouth | Drake Circus | Plymouth | Devon | PL4 8AA | UK

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