diff --git a/xrootd4j/src/main/java/org/dcache/xrootd/core/XrootdAuthorizationHandler.java b/xrootd4j/src/main/java/org/dcache/xrootd/core/XrootdAuthorizationHandler.java
index 9e78c00c..f1814470 100644
--- a/xrootd4j/src/main/java/org/dcache/xrootd/core/XrootdAuthorizationHandler.java
+++ b/xrootd4j/src/main/java/org/dcache/xrootd/core/XrootdAuthorizationHandler.java
@@ -315,17 +315,14 @@ private String authorize(ChannelHandlerContext ctx,
         throws XrootdException
     {
         try {
-            Channel channel = ctx.channel();
-            InetSocketAddress localAddress =
-                (InetSocketAddress) channel.localAddress();
-            InetSocketAddress remoteAddress =
-                (InetSocketAddress) channel.remoteAddress();
+            InetSocketAddress destinationAddress = getDestinationAddress();
+            InetSocketAddress sourceAddress = getSourceAddress();
 
             AuthorizationHandler handler =
                 _authorizationFactory.createHandler();
             return handler.authorize(request.getSubject(),
-                                     localAddress,
-                                     remoteAddress,
+                                     destinationAddress,
+                                     sourceAddress,
                                      path,
                                      OpaqueStringParser.getOpaqueMap(opaque),
                                      request.getRequestId(),