Carl Declerck


Authen::Radius - provide simple Radius client facilities


  use Authen::Radius;
  $r = new Authen::Radius(Host => 'myserver', Secret => 'mysecret');
  print "auth result=", $r->check_pwd('myname', 'mypwd'), "\n";

  $r = new Authen::Radius(Host => 'myserver', Secret => 'mysecret');
  $r->add_attributes (
                { Name => 'User-Name', Value => 'myname' },
                { Name => 'Password', Value => 'mypwd' }
  $r->send_packet (1) and $type = $r->recv_packet;
  print "server response type = $type\n";
  for $a ($r->get_attributes) {
        print "attr: name=$a->{'Name'} value=$a->{'Value'}\n";


The Authen::Radius module provides a simple class that allows you to send/receive Radius requests/responses to/from a Radius server.


new ( Host => HOST, Secret => SECRET [, TimeOut => TIMEOUT] )

Creates & returns a blessed reference to a Radius object, or undef on failure. Error status may be retrieved with Authen::Radius::get_error (errorcode) or Authen::Radius::strerror (verbose error string).


load_dictionary ( [ DICTIONARY ] )

Loads the definitions in the specified Radius dictionary file (standard Livingston radiusd format). Tries to load '/etc/raddb/dictionary' when no argument is specified, or dies.

check_pwd ( USERNAME, PASSWORD )

Checks with the Radius server if the specified PASSWORD is valid for user USERNAME. This method is actually a wrapper for subsequent calls to clear_attributes, add_attributes, send_packet and recv_packet. It returns 1 if the PASSWORD is correct, or undef otherwise.

add_attributes ( { Name => NAME, Value => VALUE [, Type => TYPE] }, ... )

Adds any number of Radius attributes to the current Radius object. Attributes are specified as a list of anon hashes. They may be Named with their dictionary name (provided a dictionary has been loaded first), or with their raw Radius attribute-type values. The Type pair should be specified when adding attributes that are not in the dictionary (or when no dictionary was loaded). Values for TYPE can be 'string', 'integer' or 'ipaddr'.


Returns a list of references to anon hashes with the following key/value pairs : { Name => NAME, Code => RAWTYPE, Value => VALUE, RawValue => RAWVALUE }. Each hash represents an attribute in the current object. The Name and Value pairs will contain values as translated by the dictionary (if one was loaded). The Code and RawValue pairs always contain the raw attribute type & value as received from the server.


Clears all attributes for the current object.

send_packet ( REQUEST_TYPE )

Packs up a Radius packet based on the current secret & attributes and sends it to the server with a Request type of REQUEST_TYPE. Exported REQUEST_TYPE methods are 'ACCESS_REQUEST', 'ACCESS_ACCEPT' and 'ACCESS_REJECT'. Returns the number of bytes sent, or undef on failure.


Receives a Radius reply packet. Returns the Radius Reply type (see possible values for REQUEST_TYPE in method send_packet) or undef on failure. Note that failure may be due to a failed recv() or a bad Radius response authenticator. Use get_error to find out.


Returns the last ERRORCODE for the current object. Errorcodes are one-word strings always beginning with an 'E'.

strerror ( [ ERRORCODE ] )

Returns a verbose error string for the last error for the current object, or for the specified ERRORCODE.


Carl Declerck <>