Iptables

Reihenfolge der Chains

		mangle: PREROUTING
		         |
		         Y
		nat: PREROUTING
		|               \
		Y                \
	mangle: INPUT             \
	      |			   \
	      Y			   |
	filter: INPUT		   Y
-----------------------       mangle: FORWARD
	mangle: OUTPUT		   |
	      |			   Y
	      Y			filter: FORWARD
	nat: OUTPUT		   |
	      |			   |
	      Y			   Y
	filter: OUTPUT ------>	mangle: POSTROUTING
-- 				   |
				   Y
				nat: POSTROUTING
				   |
				   Y
				NETWORK-CARD