user11708: I would like to use an Arduino to make tasks in my life automatic - maybe to rotate every morning a motor, or to open a door. 
So, can I run an Arduino as solo with no pc needed? Can i connect it to the Internet and can I setup software like PHP and Apache on it to control it over the internet? Has it any protocols like SSH like a normal server? 
As an example: I will send over any protocol a signal to my Arduino with a certification and then the Arduino would run a function...
Is that possible?
thanks ahead

user4143: 
I will use arduino to make tasks in my life automatic maybe to let rotate every morning a motor or to open the door.

That's the kind of thing it's designed for.

So i will ask can i run arduino as solo so no pc needed, 

Yes, you only need a PC to program it, once programmed it will run without the PC.

Can I connect it to the internet 

Yes, there are Ethernet and WiFi shields available for connecting it to a network.

and can I setup PHP and Apache on it to control it over it; has it any protocols like SSH like an normal server ?

No.  The Arduino isn't powerful enough to run software like that.  You would normally connect it via the network / internet to a server to process data.  It would just receive simple instructions or send data to the server for processing.

as example: I will send over any protocol a signal to my Arduino with a certification and then the Arduino is running a function...

I assume by "a certification" you want to run SSL on the Arduino. That's not going to happen since it's way too underpowered for that.  As I mentioned earlier, the Arduino would connect to a server on the internet to receive its instructions, or you could interface to it directly within your local network (say from a smart phone) through a simple web server interface (very simplistic due to lack of memory - a few buttons and text, that sort of thing).

11708: <p>I would like to use an Arduino to make tasks in my life automatic - maybe to rotate every morning a motor, or to open a door. </p>

<p>So, can I run an Arduino as solo with no pc needed? Can i connect it to the Internet and can I setup software like PHP and Apache on it to control it over the internet? Has it any protocols like SSH like a normal server? </p>

<p>As an example: I will send over any protocol a signal to my Arduino with a certification and then the Arduino would run a function...</p>

<p>Is that possible?</p>

<p>thanks ahead</p>
 4143: <blockquote>
  <p>I will use arduino to make tasks in my life automatic maybe to let rotate every morning a motor or to open the door.</p>
</blockquote>

<p>That's the kind of thing it's designed for.</p>

<blockquote>
  <p>So i will ask can i run arduino as solo so no pc needed, </p>
</blockquote>

<p>Yes, you only need a PC to program it, once programmed it will run without the PC.</p>

<blockquote>
  <p>Can I connect it to the internet </p>
</blockquote>

<p>Yes, there are Ethernet and WiFi shields available for connecting it to a network.</p>

<blockquote>
  <p>and can I setup PHP and Apache on it to control it over it; has it any protocols like SSH like an normal server ?</p>
</blockquote>

<p>No.  The Arduino isn't powerful enough to run software like that.  You would normally connect it via the network / internet to a server to process data.  It would just receive simple instructions or send data to the server for processing.</p>

<blockquote>
  <p>as example: I will send over any protocol a signal to my Arduino with a certification and then the Arduino is running a function...</p>
</blockquote>

<p>I assume by "a certification" you want to run SSL on the Arduino. That's not going to happen since it's way too underpowered for that.  As I mentioned earlier, the Arduino would connect to a server on the internet to receive its instructions, or you could interface to it directly within your local network (say from a smart phone) through a simple web server interface (very simplistic due to lack of memory - a few buttons and text, that sort of thing).</p>
