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I am on OSX Yosemite 10.10.3 on MacBook Pro (Early 2011) and I am not able to connect to internet from any browser except chrome. I am not even able to ping from terminal as well. Please help.
When I try to use diagnostics Internet and Server shows Red, rest all are Green.
I suspect a problem with the Parallels network driver, having seen similar issues before. First, if you haven't already, try updating Parallels to the latest version. Then, try changing the networking mode to Bridged, or if it already is, to Shared. Also, here are some generic troubleshooting steps.
Days later, I've finally figured it out. The com.apple.mDNSResponder.plist file located in /System/Library/LaunchDaemons/ was corrupted, and for some reason attempts to reset it were not being saved.
I copied this file from a macbook that was able to connect, and, since I'm using Lion, added in the option to allow appending search domains by inserting the line
<string>-AlwaysAppendSearchDomains</string>
in the following position:
<string>/usr/sbin/mDNSResponder</string>
<string>-AlwaysAppendSearchDomains</string>
<string>-launchd</string>
I then restarted the machine. This appeared to do the trick.
Best Answer
Open Network Preferences, and:
verify IP
verify gateway
verify DNS
Your IP address is either static or dynamic. Static: you put in your IP info. Dynamic: your gateway provides the correct IP info.
Open Terminal.app, and type:
That will show you what network interfaces you have. One of these is your primary route and your default gateway. You can only have one default gateway. Even though you may have many interfaces (ethernet, wireless and firewire, etc), there's only one default way to go if the request is not local.
So check for default route by typing in Terminal.app:
The top two resulting lines will tell you who's the boss.
Then ping the gateway.
If it doesn't work, reboot and try again. You should at a minimum ping your gateway and ping your DNS before it's worth it to troubleshoot individual applications.