Repeat BT WiFi Hotspot

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moka88
DD-WRT Novice


Joined: 03 Nov 2013
Posts: 10

PostPosted: Sun Nov 03, 2013 11:16    Post subject: Repeat BT WiFi Hotspot Reply with quote
I have managed to successfully setup a repeater bridge for a local public BT WiFi hotspot to extend the wireless coverage throughout my house without any issues (works very well).

However, I’m aware that a repeater bridge means that I am visible to everyone else on that public wifi access point. Ideally what I would like to do is setup a standard repeater to connect to the BT WiFi access point. I feel that being on a separate subnet will be slightly more secure. I’m also hoping to then extend security by enabling PPTP on the router (something which I cannot seem to be able to do with a repeater bridge unless I set it up on individual clients).

I have tested a repeater setup and although I can connect and receive a WAN IP on DD-WRT; I cannot for the life of me figure out why I cannot receive the BT WiFi landing page (to login). This works without issues when I use a repeater bridge.

BT WiFi use 192.168.22.22 and 192.168.22.23 as DNS servers. I have tried entering these manually as I believe it needs these to find the landing page to login but I’m not getting anywhere.

Can anyone offer any assistance in allowing a standard repeater setup to work with BT WiFi (also called BT Openzone, BT FON, BT WiFi with FON).
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francisuk24
DD-WRT Novice


Joined: 30 Nov 2013
Posts: 5
Location: United Kingdom

PostPosted: Mon Dec 02, 2013 20:56    Post subject: Reply with quote
If your IP starts with 10.xxx.xxx.xxx on the WAN IP then your connected to the hotspot however if your connected with 169.xxx.xxx.xxx IP address, then that means you aren't actually connected wirelessly. It's a self allocated IP address that a device gives itself when there is no connection.

Have you tryed disabling DHCP server and setting the LAN IP to 172.31.10.1?

iPhone 5c to BT WiFi
IP 10.144.32.XX
Subnet: 255.255.255.0
Gateway: 10.144.32.1
DNS: 192.168.22.22 & 192.168.22.23

_________________
Ex Virgin Media D-Link DIR-615 D - DD-WRT v24-sp2 (07/24/13) std (SVN revision 22118)
xorti
DD-WRT Novice


Joined: 24 Mar 2014
Posts: 2

PostPosted: Mon Mar 24, 2014 0:57    Post subject: Reply with quote
The problem is that you can't get to login screen due to be behind NAT,

the workaround,
from linux machine
ssh -L 1122:192.168.23.21:8443 root@192.168.1.1

then in another window
wget --post-data="username=BT_EMAIL&password=YOUR_PASS" --no-check-certificate https://localhost:1122/tbbLogon

so on the first step you are setting ssh tunnel to send wget request, it should you get through.

it would be so mutch easy to run wget on router, but it does not support ssl Sad
francisuk24
DD-WRT Novice


Joined: 30 Nov 2013
Posts: 5
Location: United Kingdom

PostPosted: Wed Mar 26, 2014 15:52    Post subject: Reply with quote
xorti wrote:
The problem is that you can't get to login screen due to be behind NAT,

the workaround,
from linux machine
ssh -L 1122:192.168.23.21:8443 root@192.168.1.1

then in another window
wget --post-data="username=BT_EMAIL&password=YOUR_PASS" --no-check-certificate https://localhost:1122/tbbLogon

so on the first step you are setting ssh tunnel to send wget request, it should you get through.

it would be so mutch easy to run wget on router, but it does not support ssl Sad


Sounds about right as when you connect to BT Wi-Fi when you access WWW it redirects you to https://www.btopenzone.com:8443
192.168.22.22 & 192.168.22.23 are both DNS's

_________________
Ex Virgin Media D-Link DIR-615 D - DD-WRT v24-sp2 (07/24/13) std (SVN revision 22118)
xorti
DD-WRT Novice


Joined: 24 Mar 2014
Posts: 2

PostPosted: Thu Mar 27, 2014 23:27    Post subject: Reply with quote
I had problems activating ssh on lates verioin, so I have downgraded to Firmware: DD-WRT v24-sp2 (11/21/10) std.

In the settings SSH management and ssh demon need to be enabled.

If there is no Linux machine available I would recoment to get vm player and run virtual machine with Kali.

with above commands everything works, also I set cronjob to grab google page so I don't have timeout.
spoonbender
DD-WRT Novice


Joined: 16 Oct 2014
Posts: 1

PostPosted: Thu Oct 16, 2014 20:47    Post subject: Reply with quote
I managed to get this working without the need for SSH.

Basically I followed the notes for Repeater including the Atheros considerations http://www.dd-wrt.com/wiki/index.php/Repeater

I spotted that the reason it failing was due to DNS

When I connected my PC to the LAN side of the router, only 192.168.1.1 was being assigned as my DNS. This was why www.btopenzone.com could not be resolved.

So I added the following to the "Additional DNSMasq Options" in the Services tab:

dhcp-option=6, 192.168.22.22, 192.168.22.23

This pushes the BT DNS servers to the PC and hey presto, I was able to connect to the BT login page and from there, the internet.

Hope this helps others.

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TP Link WR841ND v7
Firmware: DD-WRT v24-sp2 (03/25/13) std
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