How to share the internet connection to my lan

Please try this http://www.ubuntugeek.com/sharing-internet-connection-in-ubuntu.html

Hope this helps

That is the page I followed. For example

sudo echo 1 > /proc/sys/net/ipv4/ip_forward

gave me permission denied.

I use Juanty.

Is there a graphical tool that will set up connection sharing seamlessly?

Thank you for your help.

> Is there a graphical tool that will set up connection sharing seamlessly?

Yes and no. There is no canonical one for this at the moment (at least that I'm aware of). You may get lucky with one tool or another. I absolutely that that this is an annoying problem, but one that apparently only *usually* comes up in corporate settings where expertise on-hand is plentiful. In the meantime, us mere mortals need help.

The instructions on that page will work. As regards your specific problem in following that page, it's a subtle difference in how the instructions are written: '$' vs '#'

In any instructions involving the Unix shell, when you see '$' at the beginning of the line, it means "execute this as a normal user". When you see '#' at the beginning, it means "Be the root (all-powerful) user to run this command."

So, what's happening with this command?
$ sudo echo 1 > /proc/sys/net/ipv4/ip_forward

You are properly running the 'echo' command as the root user, but that '>' character means "write to this file." Unfortunately, the sudo only applies to echo, not to the '>' and farther. So, root writes '1', but your user reads that one and tries to write it a protected area. You user has right to do that. Ways to fix this:

  -- become the root user for the entire command:
$ sudo su -c "echo 1 > /proc/sys/net/ipv4/ip_forward"

  -- become the root user until logout
$ sudo su -
  [ ... you become root user, and the prompt changes to '#' ... ]
# echo 1 > /proc/sys/net/ipv4/ip_forward
# logout
$

(If the prompt is empty, you can hit Ctrl+D instead of typing logout.)

Gah, go me and proofreading what I wrote:

>I absolutely that that this is an annoying problem ...
I absolutely agree that this is an annoying problem ...

> You user has right to do that. Ways to fix this:
Your user has no rights to do that. Ways to fix this: