Example 5

Goal
You are an administrator of your office network. Your PCs have IP addresses, ranging 192.168.3.2-192.168.3.255. The office network is connected to the Internet by a NAT router running Microsoft Windows Server 2003 (192.168.3.1). Your goal is to count the Internet-traffic for every PC of the office network. The traffic between the PCs within the office network must not be accounted.

Solution
You should do the following:
- Fill in the Local Address Table (LAT) with a range 192.168.3.1-192.168.3.255
- Create the filters for traffic accounting (one filter per PC)

Filter 1. Internet traffic of PC 192.168.3.2.
N
Rule		 Type of IP 
protocol		 Source
address		 Source
port		 Destination
address		 Destination
port		 Both
directions		 Action
for
packet		 Additional condition
1 Any 192.168.3.2   IP addresses of WAN   Yes Count  
Filter 2. Internet traffic of PC 192.168.3.3.
N
Rule		 Type of IP 
protocol		 Source
address		 Source
port		 Destination
address		 Destination
port		 Both
directions		 Action
for
packet		 Additional condition
1 Any 192.168.3.3   IP addresses of WAN   Yes Count  
Filter 3. Internet traffic of PC 192.168.3.4.
N
Rule		 Type of IP 
protocol		 Source
address		 Source
port		 Destination
address		 Destination
port		 Both
directions		 Action
for
packet		 Additional condition
1 Any 192.168.3.4   IP addresses of WAN   Yes Count  
Filter 4. Internet traffic of PC 192.168.3.5...
Filter 5. Internet traffic of PC 192.168.3.6...

 Note