Gargoyle Forum

I have a TL-WDR4300v1 running Gargoyle 1.5.11 which Ill call R2. This router is set up as a Client+AP using another router R1 (WRT54GS dd-wrt) as the gateway.

[Gateway R1] 192.168.1.1 -->192.168.1.6 [Client+AP R2] 192.168.2.1 --> Lan 192.168.2.0/24

I installed nodogsplash with no problems. But the only way I can access the splash page is by going directly to 192.168.2.1. If I do this I can authenticate just fine and continue onto other sites.

If I instead try to directly go to, say http://www.google.com, the splash page never comes up and the page just hangs. I understand that the page will hang because I am not authenticated.

If I try to ping http://www.google.com before I am authenticated the request times out as expected. If I then try to ping http://www.google.com after I authenticate the request comes back as Destination Port Unreachable as opposed to simply timing out.

I have tried manually configuring nodosplash to use br-lan (192.168.4.1) as the GatewayInterface and br-wan(192.168.1.6) as the ExternalInterface as defined in nodogsplash.conf. (http://wiki.openwrt.org/doc/howto/wirel ... odogsplash)

I have also tried configuring the GatewayAddress as both 192.168.2.1 and 192.168.1.6 with no change in outcome.

NoDogSplash uses a web server to listen to the GatewayAddress on port 2050 for http GET requests. Looking at debug logs it seems to me that when I go to any other IP besides 192.168.2.1 this web server cannot see the traffic, it is bypassing the GatewayAddress.

I dont know if the problem is in how gargoyle does NAT or a conflict between iptables in nodogspalsh and gargoyle or what.

I have done a lot or searching and trying other solutions and now Im stumped.
Thanks for any help.

If you get it working in interested in how you did it

So more weirdness.

If I authenticate my computer, then open up some webpages in different tabs, then deauthenticate by either restarting nodogsplash or just deauth the computers IP, I can get to the splash page by reloading some of the previously open tabs.

Not all the previously opened webpages(tabs) work though. This forum for one works while http://www.github.com did not. Also http://www.google.com does not bring up a splash page but google.com without the www works. [Edit] (This may be a fluke, haven't been able to replicate) [/Edit] I tried other webpages without the www preface such as github.com but this did not work.

I really don't know enough (yet) about NAT and DNS to really know what's going but I'm going to keep playing with it. Im getting closer.

[Edit 2]
Above I was only trying with tabs that had previously been opened prior to deauthentication. I now tried with a website I have never been to before, ever, www.sanduskyregister.com. And it worked, the splash screen came up.

Another interesting tidbit I forgot to mention.

Without nodogsplash running I can ping the gateway router R1 192.168.1.1 just fine from my laptop and from R2 as expected.

With nodogsplash and my computer not authenticated, I cannot ping R1 from my laptop as expected though I can ping R1 from R2.

With my computer authenticated I still cannot ping R1 and I cannot ping R2, both come back with Destination Port Unreachable:

Computer to R1 with nodogsplash running and computer authenticated: Computer to R2 with nodogsplash running and computer authenticated: