I am using OS X Yosemite version 10.10 on my iMac.
For about a week now, I've had problems with my Internet connection. I am connected via ethernet. I can use Gmail, Skype and Google Calendar without problems but when I access other websites, I often get "website doesn't respond" kind of answer. It helps when I restart the computer but the problem returns after a while.
When I do the diagnostic test in System Preferences > Network > Assist me, it tells me that all is fine with my connection. I also tried to restart my router but that did not help either. Other devices that work on wifi (iPad, Dell laptop) work fine on the same Internet network. Also, when I switch connection from Ethernet to wifi, it is the same problem again.
I followed the advice given by Martín Marconcini to this question on the forum: "I cannot connect to internet but my MacBook Pro detects the network and my HP computer works fine on the same network" (Jun 30 '12 at 9:33) but it did not solve the issue. When I go to TCP/IP I see that I am using DHCP. Following the advice by Martín Marconcini I changed my DNS to 18.104.22.168. So that is what I see in the DNS tab now (the others I had there disappeared). Also, everything is unchecked in the Proxies tab.
My IP address is: 192.168.0.13. Subnet mask: 255.255.255.0 Router: 192.168.0.1.