Re: IP routing with remote DNS, but server & client on same subnet - how?

On Oct 16, 11:57 am, Stefan Monnier <monn...@xxxxxxxxxxxxxxxx> wrote:
Now, what I'm wondering is this: When I am physically on my home
network, on one of my WinXP clients and I browse towww.mydomain.net,
is the Linksys router, or Apache (or both) smart enough to say "wait a
minute -- the domain and client are on the same subnet, so let me just
route the packets completely within the 192. domain" (?)

Yes and no.

I'm asking this because when I am on my home network I'd rather not
have HTTP being served out through my ISP's network, and back to me.
It would be much more efficient if that traffic just stayed on my
private network.

Rest assured that it will not go out to your ISP.

There are 2 possibilities:
1 - it won't work because the port remapping is only applied to packets
coming in from outside rather than from the local network.
This can happen depending on the details of how the port-forwarding
is done.
2 - it will work and the packets will go from the client to the router, then
to the server and the reply will go from the server to the router back
to the client.

I.e. it all goes through the router, but not through the cable modem.

Stefan

Thanks! I like this theory (well, maybe to you it is a fact!) -- so
tonight I will try pulling the ethernet cable out of the cable modem
while a file transfer from my website is underway. If all stays on my
local network and no traffic out through the ISP, then the file
transfer (staying within the Linksys router) should be uninterrupted.

-Randy

.

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