iptables-(pci-review).md

 ## Explanation of IP Tables Rules
 ---
+The INPUT chain determines how to treat an IP packet coming in to the network adapter from the network.
+The OUTPUT chain determines how to treat an IP packet coming from with the device
 
+The Chain will list each rule by protocol, source and destination address & port
+The target is a list of criteria to determine if the message should be handled by that target
+
+
+```mermaid
+graph LR;
+INPUT-->bw_input;
+INPUT-->fw_INPUT;
+FORWARD-->oem_fwd;
+FORWARD-->fw_FORWARD;
+FORWARD-->natctrl_FORWARD;
+OUTPUT-->oem_out;
+OUTPUT-->fw_OUTPUT;
+OUTPUT-->st_OUTPUT;
+OUTPUT-->bw_OUTPUT;
+```
 
 ```
 Chain INPUT (policy ACCEPT)
@@ -14,7 +32,7 @@ Chain FORWARD (policy ACCEPT)
 target     prot opt source               destination         
 oem_fwd    all  --  anywhere             anywhere            
 fw_FORWARD  all  --  anywhere             anywhere            
-bw_FORWARD  all  --  anywhere             anywhere            
+fw_FORWARD  all  --  anywhere             anywhere            
 natctrl_FORWARD  all  --  anywhere             anywhere            
 ```