On Tue, Oct 9, 2012 at 1:27 PM, Nirmalya Lahiri <[email protected]> wrote: > Hi everyone, > today I have discover a critical network infrastructure which is almost > impossible. I believe very few people have seen this before. > > The story is .... in my office we have leased internet connection with > static IP from TATA Communication Ltd. In my local network I have configured > network ip (192.168.7.0). So all the PC in my local network has the IP of the > range 192.168.7.1 to 192.168.7.253. > > For a experimental purpose yesterday I have ping to 192.168.2.10... It > should not return reply. But unfortunately I got reply from a host. After > investigation I have found that the host is outside of my local network. > Please look into the tracepath report from my local PC to that unknown host.
It probably is a case where all the external IPs or a bank belongs to the same organisation. Their internal routers would route these and also private ranges using static routes. Problem of how they would have built the network. Using public IPs for internal networks instead of creating private subnets and keeping public IPs part of their ISP core routing infrastructure. When this luxury is available, they may have used these to avoid NAT'ting and being able to use negotiated port protocols without worrying about ALGs etc.... -- Mohan Sundaram _______________________________________________ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
