RE: [OT] Network question

["Paul Gordon" <paul@xxxxxxxxxxxxxxxxxxxxx>]

>From RFC1918:

"Because private addresses have no global meaning, routing information
about private networks shall not be propagated on inter-enterprise
links, and packets with private source or destination addresses
should not be forwarded across such links. Routers in networks not
using private address space, especially those of Internet service
providers, are expected to be configured to reject (filter out)
routing information about private networks. If such a router receives
such information the rejection shall not be treated as a routing
protocol error."

Which in effect means that in theory at least, routers should not route
between public & private networks - with the obvious exception being
your NAT router which is expressly designed for just that purpose... so in
theory you shouldn't be able to see any IP's in that range outside of your
own network, and no-one else should be able to see yours...

Paul G.


________________________________

From: ukha_d@xxxxxxx on behalf of Dean Barrett
Sent: Fri 27/01/2006 12:03
To: UKHA_D Group
Subject: [ukha_d] [OT] Network question



This'll teach me to mess with things i dont know.

Having lost the address of an IP camera i've downloaded a thing called 1st
IP Port Scanner.

I decided to put an IP range of 192.1.1.1 to 192.168.1.1 hoping to find it.

This is where i get lost - whilst i havent found my camera yet - i seem to
have found someone elses machines in the 192.1.1.x range.

Should i be able to do this ?? - i thought 192 was always behind a router,
and if i can see other peoples 192's does that mean people can see mine ??

Im i just going off at a tangent - or slightly mad....



Dean.




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