VII. Router Diagnostics

Advanced users may wish to refer to router firewall/packet filtering logs. Each line of the log will contain the following fields :

1. System Time
2. Location (LAN/WAN)
3. Rule No (Set:Rule). Root or Group : Rule No. (Only Active rules numbered)
4. Action Taken (No match:n Block:b Pass:p )
5. Source IP/Port
6. Destination IP/Port(or service name)
7. Protocol (tcp/udp/icmp etc.)
8. Header Length (bytes)
9. Payload Size (Kb)
10. Packet Type (SYN,ACK,FIN,RST,PUSH,URG etc.)
11. ACK Number
12. Sequence Number
13. Window size (bytes)
14. Direction (In or Out)

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