RE: 192.168.x.x oddities

["Shawn Jackson" <sjackson () horizonusa com>]

> A common misconception is that the 10.0.0.0, 172.16.0.0 and 
> 192.168.0.0 network are non-routable.  This is NOT true.  
> Most routers are setup to not route the addresses, but they 
> can be routed.

True, you can route those IP's, that's how we can use them internally
:-). 
The core internet routers and backbone routers won't route those IP
addresses, so
in essence they can't be routed over the Internet. But they can be
routed over your
providers network usually up until their Teir-1 interconnect or core
router. As a 
common practice I always setup my edge routers to not route private IP
ranges as a input 
ACL against the customer side interface or sub-interface.

> Your problem could be this or it could be that a system is 
> mis-configured and is just trying to figure out where it can go.

Mis-configued, lazy, incompetent, etc, etc. I wonder what provider he
uses, might try
and stay away from it ;-).

Shawn Jackson
Systems Administrator
Horizon USA
1190 Trademark Dr #107
Reno NV 89521

www.horizonusa.com
Email: sjackson () horizonusa com
Phone: (775) 858-2338
       (800) 325-1199 x338 

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