Re: Strange traceroute

[chaser () MEWL NET (Troy Ablan)]

AFAIK, routing can happen over an ISP's private network, but it seems like
a bad practice.  Most ISPs filter inbound packets with private source
addresses, so if the route were symmetric, a traceroute from the remote
side to your box would encounter lines with all asterisks on the hops
where the 10.x.x.x routers would be.

-Troy

On Thu, 3 Feb 2000, RB wrote:

> Hi everyone, thanks a bunch for the answers. I should have given more info
> though, I was very vague and now I've made myself look incredibly
> stupid..... Anyway I have a valid (public) IP address. My next hop is my
> default gateway also another valid public address. Instead of my usual path
> out of the @home network I saw a private IP pop up and it made me wonder. I
> was trying to find the break in my connection to my news server which is
> supplied by another ISP (@home's are woefully lacking). I was able to ping
> my default gateway and do a traceroute to it (note I have a static IP),
> doing it that way it is the first hop. But doing a traceroute to any other
> public address shows the 10.76.x.x address as the first hop. I posted it to
> this security list because it seemed strange that a private IP address would
> be displayed. I'm not thinking that I was comprimised or under attack, just
> a little curious.
>
>
>
>
> RB