[RndTbl] Routing questions

Mike Pfaiffer high.res.mike at gmail.com
Wed Jun 17 05:31:31 CDT 2009

Sean Cody wrote:
> Agreed.
> What you are wanting is sort of like a captive portal.
> But this is easier done using squid in transparent mode with a custom  
> redirector script (which I've done for April fools pranks so I know it  
> works).

	Sounds interesting. I wanted to answer all the responses before I left 
for the day. I'd like to hear the details though...


> On 16-Jun-09, at 7:00 PM, Bill Reid 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
>>> _______________________________________________
>>> Roundtable mailing list
>>> Roundtable at muug.mb.ca
>>> http://www.muug.mb.ca/mailman/listinfo/roundtable
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