 MattAll noise, no signal.Premium
join:2003-07-20
Jamestown, NC
kudos:12 | reply to waynebike
Re: ALL DNS Entries resolve to 127.0.0.1 What is 10.2.11.2? Is that the IP of your server at work? If so, most cable companies use the 10.x.x.x network for devices, so what it looks like it happening is that you are running a trace route to a piece of Comcast equipment, not to your server.
What has me MORE puzzled, is why in the hell is your WRT router passing a 10.x.x.x address out the WAN port. Your Linksys should drop those packets as private address space shouldn't be routed onto the public internet. |
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 tschmidtPremium,MVM
join:2000-11-12
Milford, NH
kudos:5
 ·Fairpoint Commun..
 ·Hollis Hosting
| said by Matt:Your Linksys should drop those packets as private address space shouldn't be routed onto the public internet. The only addresses router will not forward is the local address segment used by the LAN. It has no way of knowing what addresses are being used external to itself.
There is a lot of confusion about RFC 1918 private addresses. They are private in so far as they are not used on the public Internet. However that does not mean they are forbidden from being used by ISPs or corporate networks. As you pointed out it is common for ISPs to use the 10/8 block for edge routers. The "public" Internet does not begin until the ISP hands the traffic off at peering point.
/tom |
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MattAll noise, no signal.Premium
join:2003-07-20
Jamestown, NC
kudos:12 | said by tschmidt:said by Matt:Your Linksys should drop those packets as private address space shouldn't be routed onto the public internet. The only addresses router will not forward is the local address segment used by the LAN. It has no way of knowing what addresses are being used external to itself. Dood, Tom, you're right. I just tested performing a trace route to 10.0.0.1 and sure enough, my router tried to send it out onto North State's (my ISP's) network. I was under the assumption that a home router would be intelligent enough to know about the private address space and not pass it LAN to WAN. |
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