Hi, everybody Itables man tells me that table filter includes INPUT, FORWARD, OUTPUT chains table nat includes PREROUTING, OUTPUT, POSTROUTING chains table mangle includes PREROUTING and POSTROUTING chains It seems that they are overlaping Might anybody tell me the difference such as that between nat and mangle? Thanx in advance Xing Fei - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org