--- loncom/auth/lontokacc.pm	2005/02/05 22:20:56	1.11
+++ loncom/auth/lontokacc.pm	2005/02/06 07:23:40	1.12
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Access Handler for User File Transfers
 #
-# $Id: lontokacc.pm,v 1.11 2005/02/05 22:20:56 albertel Exp $
+# $Id: lontokacc.pm,v 1.12 2005/02/06 07:23:40 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -36,7 +36,13 @@ use Apache::File();
 
 sub handler {
     my $r = shift;
-    my $reqhost = $r->get_remote_host(REMOTE_HOST);
+    my $reqhost = $r->get_remote_host(REMOTE_NOLOOKUP);
+    my $netaddr=inet_aton($reqhost);
+    ($reqhost) = gethostbyaddr($netaddr,AF_INET);
+    if (!$reqhost) {
+	$r->log_reason("Unable to do hostname $reqhost lookup for ".$r->get_remote_host(REMOTE_NOLOOKUP));
+	return FORBIDDEN;
+    }
     if ($reqhost eq 'localhost.localdomain') {
        return OK;
     }