[ale] ot: internet connection

[Scott Plante]

Since it's a Linux list, as a thought experiment, suppose it were a Linux laptop instead of an Android phone. 


Could you do it with Docker? I've seen a couple of tutorials on Docker and it seems like you could, except I don't know if you can run GUI stuff under Docker. I've only seen daemons, servers, etc. Sure you could fire up a full-blown VM, but that could be cheating. 


Googling turned up a reference to "network namespaces" but I hadn't heard of them until now. Seems like you can configure your interfaces into namespaces, then execute: 
  ip netns exec <network namespace> <command to run against that namespace> 

So like, 
  ip netns exec wifi /usr/bin/firefox
or
  ip netns exec fourG /usr/bin/thunderbird

Am I understanding that correctly?

Maybe Android has the ip netns command too, or the underlying things in the kernel where you could compile the command yourself.

Scott 


----- Original Message ----- 

From: "DJ-Pfulio" <DJPfulio at jdpfu.com> 
To: ale at ale.org 
Sent: Tuesday, April 14, 2015 5:12:39 PM 
Subject: Re: [ale] ot: internet connection 

On 04/14/2015 04:27 PM, Boris Borisov wrote: 
> Such a general topic but will try to explain :) 
> 
> I'm sitting at Starbucks having coffee break ( deserved ) . They have free wifi 
> but. My phone is company phone used for work with company email and what not So 
> I would hesitate to get on free wifi. But probable idea/scenario. You attach to 
> wifi but you tell which program to go through wifi and which through 4g/3g. Is 
> that even possible ? 
> 
> 


So you want a split tunnel, but no VPN. Nice. 

In stock Linux, the only way I know to do that is with iptables routing based on 
userids - every different routing solution needs to run under a different ID. 
Don't know if root'd android can do that or not. There are a few 
permissions-control apps for Android where you can deny different permissions by 
app/userid. Haven't looked at how fine the network controls are. Not rooted 
anymore. Sorry.