[asterisk-biz] Bypass Hotel hotspot login page for IP Phone

[Sean McMaster]

Thank you so much for taking the time to type that out. Unfortunately for me, it is Win XP

> Date: Thu, 29 Oct 2009 11:30:59 -0400
> From: abalashov at evaristesys.com
> To: asterisk-biz at lists.digium.com
> Subject: Re: [asterisk-biz] Bypass Hotel hotspot login page for IP Phone
> 
> (Works if your laptop is Linux:)
> 
> I would connect the IP phone to your laptop via a switch.  Plug your 
> laptop into same switch.  Plug cable going into hotel jack into switch 
> as well.
> 
> Set up a virtual subinterface (i.e. eth0:1) on a /30 with your phone 
> on the other side, i.e. 192.168.200.1/30 (laptop) and 192.168.200.2/30 
> (phone).  Set 192.168.200.1 to be your phone's default gateway.
> 
> Then, set up other interface on laptop (eth0) as per normal to connect 
> to hotel, e.g. acquire a DHCP lease on it.
> 
> Enable IP forwarding:
> 
>     echo 1 > /proc/sys/net/ipv4/ip_forward
> 
> Then, NAT your phone's traffic out of your laptop.  From the hotel 
> router's point of view, it will appear to be coming out of your laptop:
> 
>     iptables -A POSTROUTING -o eth0 -s 192.168.200.0/30 -j MASQUERADE
> 
> This will put you behind two layers of NAT from the point of view of 
> your service provider/PBX/whatever, but if the reregistration 
> intervals are frequent enough, OPTIONS pings are turned on 
> (qualify=yes if Asterisk is the UAS), and the upstream NAT gateway 
> isn't ridiculous, it should work - certainly enough to reliably make 
> calls out.
> 
> -- 
> Alex Balashov - Principal
> Evariste Systems
> Web     : http://www.evaristesys.com/
> Tel     : (+1) (678) 954-0670
> Direct  : (+1) (678) 954-0671
> 
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