I have some queries on RFC 1918
1. Do I need to block RFC 1918 addresses on the internet edge router even if I am not using the private address space in my LAN/DMZEE?
2. The RFC 1918 ip addresses are non routable on internet. Then how are they reaching one's network thru internet? Sometimes I see some logs on my firewall from internet with the source ip 10.x.x.x
If its hitting my network thru address spoofing, is it not possible for my firewall to identify the real IP address?