Raspberry Pi as an Access Point.

Hello,

I have successfully got the Raspberry Pi working as an access point but I have a few questions about different setups.

http://sirlagz.net/2012/08/09/how-to-use-the-raspberry-pi-as-a-wireless-access-pointrouter-part-1/

I used the link above which worked out nicely.

Part One seems to do the trick for me...

A. Raspberry Pi can be accessed through AP

B. AP gives out IP addresses

C. Devices can communicate between each other through AP (I tested between two windows machines Remote Desktoping into one of them)

Part Two:

If you want a wifi router, ignore Part 2, and go from this part straight to Part 3

QuickLinks:

I believe that this is if you DO NOT want to access the raspberry pi but attach it to a network. (PLEASE correct me if I am wrong)

Part Three:

How to make your RPi into a Router

Now this is the bit that confuses me...

If I can do everything that I listed above in Part One, doesn't that already mean I am routing data?

Could someone please explain the benefit of Part three to me so I can decide if I need to follow the steps involved to improve my setup.

Hi,

Part 3 is if you want to use the Pi to route network traffic from one network onto a Wireless network hosted on the Pi.

e.g. Network 1 (10.0.0.0/24) -> Raspberry Pi -> Wifi -> Network 2 (10.0.1.0/24)

Part 2 is if you want to use the Pi to extend the network

e.g. Network 1 (10.0.0.0/24) -> Raspberry PI -> Wifi -> Network 1 (10.0.0.0/24)

There is no routing involved when packets go from ethernet to wifi.

Lawrence,

I think I replied to you on the other forum...

http://www.raspberrypi.org/phpBB3/viewtopic.php?f=36&t=31404&p=273543#p273543

Jim,

I had a look at Pi point but it DOESN'T Come setup to go as you think...

It's had the Pi-Point stuff stripped out, too, to provide a pretty lean setup into which you can install what you need.

So, You need to install all the software and stuff to get it working...

I used this setup here: http://sirlagz.net/2012/08/09/how-to-use-the-raspberry-pi-as-a-wireless-access-pointrouter-part-1/

Which is very good.

Indeed you did

I plan on packaging up RaspAP into an easy to use SD card image with a web interface.

Would you be interested in trying it out for me ?

Cheers,

Lawrence

I'd be interested in testing that for you, Lawrence.

Sounds good, I'm still writing up the Web interface but I'll post it up here when I finish it up

Getting there though, with the interface you'll be able to configure both the WiFi client details, and HostAPD as well

Fergus Byrne wrote:

 

Jim,

I had a look at Pi point but it DOESN'T Come setup to go as you think...

It's had the Pi-Point stuff stripped out, too, to provide a pretty lean setup into which you can install what you need.

So, You need to install all the software and stuff to get it working...

 

That is rather disappointing and I would think somewhat counter productive that the pi Point image had all the pi-point stuff stripped out of it.

Rather counter productive you would think...

What sort of web code will you be using?

Also remember that it is the Raspberry Pi that would be running the web page... nothing to fancy

The main problem I am having with a  little bash script that I am writing is the three lines on the bottom of the /etc/network/interfaces file... They have something to do with the GUI interface (which I have never used due to lllaaaaaggggg on the Raspberry Pi.).  Can anyone inform me of how to remove certain lines from files please (using bash).

Try using a text editor like nano or vi. Nano is easier to use.

I know how to remove them...

Just how do I do it through bash script? 

Right now I bring up a nano session: sudo nano /etc/interfaces/network

But I am sure there is a bash way.

I know how to remove them...

Just how do I do it through bash script? 

Right now I bring up a nano session: sudo nano /etc/interfaces/network

But I am sure there is a bash way.

Normally the sh script way would be to make calls to sed and awk from your script and do in line editing that way.

Here is an example:

http://en.kioskea.net/faq/1451-sed-delete-one-or-more-lines-from-a-file

Mike

Another great example:

http://quickleft.com/blog/command-line-tutorials-sed-awk

Mike

Here's another way, just for fun and educational value:

If you happen to know for sure that a file, call it foo, is 10 lines long,

you can get all but the last 3 lines by doing:

   $ head -7 foo

It's usually dangerous to rely on your file always being a fixed length,

so you can find out how long foo is by doing:

   $ cat foo | wc -l

You can combine these into a script that gets all but the last 3 lines

of an arbitrary sized file by doing:

  $ z=`cat  foo  |  wc  -l`

  $ z=`expr  $z  -  3`

  $ head  -$z  foo

I just remembered that the head command allows a negative argument to mean

counting from the end.  So you could say simply:

    $ head  --lines=-3  foo

to get all but the last 3 lines of file foo. 

(note that there is a double dash in --lines.)