Hi, Thanks for the patch, I'll try it tomorrow. Here's the strace file: http://www.2shared.com/file/3560857/288d71f7/strace.html The policy-file which was used for creating it looked like this: from Zorp.Core import * from Zorp.Http import * import os InetZone('attack', '10.1.1.0/24', inbound_services=['HTTP'], outbound_services=['HTTP']) def http(): Service(name="HTTP", proxy_class=MyHttp, router=TransparentRouter(forge_addr=TRUE, forge_port=Z_PORT_ANY)) Listener(DBIface('eth0', 50080), 'HTTP', transparent=TRUE, backlog=255, threaded=FALSE) class MyHttp(HttpProxy): def config(self): HttpProxy.config(self) self.transparent_mode = TRUE self.rerequest_attempts = 1 self.request_stack["POST"] = (HTTP_STK_MIME, (Z_STACK_PROGRAM, "/bin/cat")) @Árpád Magosányi: The patches for AnyPy look very promising to me. Especially the streams were quite problematic for me before because they always blocked (at least for me, I'm not a python pro). Also thanks a lot for the tutorial, it looks great! Thomas Wenz -- GMX startet ShortView.de. Hier findest Du Leute mit Deinen Interessen! Jetzt dabei sein: http://www.shortview.de/wasistshortview.php?mc=sv_ext_mf@gmx