by internal i mean 10.x.x.x. by external i mean 216.x.x.x

the netmasks are correct. in fact the connections worked properly for some
time.

when i use the external IP i try to ping my external gateway (@home's
upstream router). when i use my internal IP i try to ping the internal
gateway associated with it (firewall).

I had originally though that it might have been a conflict of MAC addresses
because I was using the same external IP address (216.x.x.x) on couple
different machines (at different times). But I don't see that being the case.

Thanks for the help.


Michael Burger wrote:

> Can you define, for us, your take on internal vs. external?
>
> The reason I ask is that if the network portion of the IP address
> (the first 2 or 3 octets) doesn't match any IP address assigned to
> the gateway, you won't be able to ping it.  Also, the netmask has to
> match, as well.
>
> If you mean an address that's external to your in-house IP network,
> then it won't ping anything inside your network, anyhow...the
> external address on that gateway is almost always on the "other side"
> of that gateway, meaning outside the scope of your internal network.
>



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