[RndTbl] Routing questions

Mike Pfaiffer high.res.mike at gmail.com
Wed Jun 17 05:04:30 CDT 2009

Dan Keizer wrote:
> yeah -- like Bill says -- you want to use a customized firmware to
> perform that function.
> Check out a few micro builds ... a couple I've used are below -- you
> didn't say what hardware you have, but check the following:
> dd-wrt:  http://www.dd-wrt.com/wiki/index.php/Supported_Devices
> openwrt: http://oldwiki.openwrt.org/TableOfHardware.html
> you would probably like dd-wrt -- it is very user friendly and
> provides alot of functionality ... a small screenshot of one of my
> dd-wrt router configs is attached -- (I don't have that service
> enabled)
> openwrt has a large collection (and I mean large!) of downloadable
> programs cross-compiled for the various supported platforms... both
> have ssh and http control.
> Dan.

	If it works with my D-Link (see the reply to Bill) I can see where I 
have a lot more reading and research to do. I'll have to look at 
alternative firmware.

	Since I'm slowly getting into this sort of thing user friendly is a big 


> On Tue, Jun 16, 2009 at 7:00 PM, Bill Reid<billreid at shaw.ca> wrote:
>> Hi Mike,
>> What you want to do goes way beyond what most low end routers are
>> designed to do. As you suggest the rules are applied to traffic coming
>> into the WAN port and not local traffic. Your proposal also is not just
>> IP routing but is also URL routing(i.e more like a proxy).
>> The port 80 redirect is available in the mods to the Linksys router via
>> firmware replacement(an exmaple is openwrt.org)
>> -- Bill
>> Mike Pfaiffer wrote:
>>>       The set-up to the question is I picked up a decently modern wireless
>>> router to play with. I allow no connection to the internet (nothing in
>>> the WAN port). I have a couple of computers I can connect to the wired
>>> ports of the router (assign static IPs within the subnet but outside the
>>> DHCP range). These machines (both *NIX boxes) will provide services such
>>> as a web server and a mud/game server. The router will allow open access
>>> to anyone who wants to connect (I want to provide my own content for
>>> experimentation). Since I have physical control of the hardware I'm not
>>> too worried about security.
>>>       Initially I'd like to be able to redirect all http traffic not bound
>>> for my web server to my web server. For example someone trying to get to
>>> Google will get my info page instead. But if someone were trying to
>>> access a different page on the same machine would still be able to connect.
>>>       I've done the RTFM thing and got confused. The manual seems to dance
>>> around the issue but doesn't seem to say anything which looks to be
>>> appropriate. The firewall is used mainly to filter incoming (from the
>>> WAN port) traffic. IP filters control the outbound (to the WAN port)
>>> filtering. The routing page talks about routing requests to a specific
>>> IP outside the LAN side. Virtual servers route requests from the WAN
>>> side to a specific LAN address. The port forwarding section looked more
>>> like an extension to the firewall page.
>>>       Here is what I'd like to do graphically.
>>> Rule 1:
>>> LAN requests non-192.168.X.Y web page --> Router says "You must mean
>>> 192.168.X.Y" --> Router sends traffic to 192.168.X.Y/index.html
>>> Rule 2:
>>> LAN requests 192.168.X.Y/whatever.html --> Router passes along the
>>> request to 192.168.X.Y web server
>>>       The question is how can I do this? I know I've missed something, but
>>> the manual didn't seem to help. I'll admit to not checking Google, but
>>> I'm not sure what search terms to use.
>>>       This ties in with the wireless questions I was asking a couple of
>>> months ago. After I get this working I'll be looking at authentication
>>> for other services and extending the range of coverage.
>>>                               Later
>>>                               Mike
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