I have noticed recently that my Outgoing Router Log (Linksys) has shown that my computer (Win 7 SP1, 64-bit OS) is contacting other devices with Private IP's beyond my router (using NAT) and before my building router. I am in a multi-dwelling building, so there is a gateway (10.3.1.254) for my building.
A traceroute from my computer (192.168.14.50) to google shows something like this:
Tracing route to www.google.com
over a maximum of 30 hops:
1 1 ms 1 ms 1 ms 10.3.1.254
2 2 ms 2 ms 1 ms 10.2.0.2
3 2 ms 2 ms 2 ms 38..........
My router IP - 10.3.0.45
Default Gateway - 10.3.1.254
Subnet Mask - 255.255.254.0
So, my Outgoing Router Log shows that my computer is trying to connect to other private IP's and Ports as follows:
10.3.0.100 Ports 9000 and 137
10.3.0.165 Ports 9000 and 137
10.3.0.209 Ports 9000 and 137
I tried pinging and tracert to these IP's but got no response.
Why would my computer be contacting other Private IP's that are beyond my router and behind my building's gateway router?