Im currently using freeradius 2.1.4 I need to lookup a username in a dbm and rewrite it before sending off the proxy request. I have achieved this by using the below method. But I was wondering if there was a better way. It would seem that invoking perl with every auth request might be bad. Thanks in advance! -William In: /etc/raddb/dictionary ATTRIBUTE My-Local-String 3000 string In: sites-available/default pre-proxy { rewrite update proxy-request { User-Name := "%{proxy-request:My-Local-String}" } } In: /etc/raddb/modules/rewrite exec rewrite { wait = yes program = "/etc/raddb/rewriteusername.pl %{User-Name} %{Stripped- User-Name} %{Realm}" input_pairs = proxy-request output_pairs = proxy-request shell_escape = yes } In: /etc/raddb/rewriteusername.pl #!/usr/bin/perl use strict; use DB_File; my %h; tie %h, "DB_File", "/etc/raddb/rewritemap.db", O_RDONLY, 0444, $DB_HASH or die "Cannot open file rewritemap.db: $!\n"; my $fuser = $ARGV[0]; my $suser = $ARGV[1]; my $realm = $ARGV[2]; if($realm eq "foobee.net") { if($h{$suser}) { print "My-Local-String=" . $h{$suser}; } else { print "My-Local-String=$suser"; } } else { print "My-Local-String=$suser"; } exit 0;