Configure chrome browser to use proxy server

Question

I'm trying to make Squid3 to use basic authentication. I'm setting this up on ubuntu14.04 on EC2

I'm following http://hackingonstuff.net/post/23929749838/setting-up-a-squid-proxy-on-aws and have managed to get through steps 1-3:

for step 4 I have done:

Step 5 says:

Depending on your OS/browser, you should configure the system to access the Internet
via the proxy for both HTTP and HTTPS (e.g. ec1-11-11-11-11.compute-2.amazonaws.com:3128).

I have opened up the chrome settings browser and configured the proxy as

unfortunately when I open , http://www.whatsmyip.org/ the connection times out. What am I doing wrong?

addendum:

after entering netstat -tulpen at the command line I got:

Proto Recv-Q Send-Q Local Address           Foreign Address         State       User       Inode
   PID/Program name
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      0          8476
   -
tcp6       0      0 :::22                   :::*                    LISTEN      0          8478
   -
tcp6       0      0 :::3128                 :::*                    LISTEN      0          8685
   -

So I'm assuming its functioning OK..

Answer 1

The configuration you posted above looks good to me. Are you sure the Squid is running and accepting connections on port 3128? At least I don't find any mistake in the screenshots…