Internet stops working, except for Google websites

LeandrodaFL

macrumors 6502a
Original poster
Apr 6, 2011
962
1
After using my mac for a while, the internet stops working, as If I had no internet. But for some reason, google still works. This means I can search for websites and images in google and acess youtube (altough the videos do not load) Every other site is offline.

A restarrt imeaditly resolves the issue. Turning off/on Airport doenst, or restarting browser. Only a restart resolves this.

Meanwhile, my iPad and macbook operates normally. I wonder if some hardware glitch is causing this or if it is software from evil google left in my Mac.
 

wrldwzrd89

macrumors G5
Jun 6, 2003
12,107
75
Solon, OH
I smell some software changing your network settings; perhaps what's happening is that the DNS server is getting set to Google's IP address; this would explain why Google works but other things don't.
 

LeandrodaFL

macrumors 6502a
Original poster
Apr 6, 2011
962
1
I smell some software changing your network settings; perhaps what's happening is that the DNS server is getting set to Google's IP address; this would explain why Google works but other things don't.
Is there anything I can do about it?
 

wrldwzrd89

macrumors G5
Jun 6, 2003
12,107
75
Solon, OH
Is there anything I can do about it?
Yes, there is. Odds are high that the culprit is a Launch Daemon or a Privileged Helper Tool - both of these things live in /Library, where the initial / represents the root of your boot drive - to get there in Finder choose Computer from the Go menu.

Once the Library folder's open, find the two folders I mentioned earlier, containing things of the same name. If you see anything suspicious in either folder, try moving it to your Desktop and restarting the Mac - note that you'll need to authenticate with your admin password to do stuff in here.
 

LeandrodaFL

macrumors 6502a
Original poster
Apr 6, 2011
962
1
Yes, there is. If you see anything suspicious in either folder, try moving it to your Desktop and restarting the Mac.
PrivilegedHelperTools is empty, Launchdemons has 2 files, one from Adobe and another from Memeo. Memeo is my backup and I had this for 3 years, but I would'nt be surprised if Adobe somehows glitches and makes my internet go haywire.

If I delete this file, what would happen? Will I lose youtube?
 

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wrldwzrd89

macrumors G5
Jun 6, 2003
12,107
75
Solon, OH
PrivilegedHelperTools is empty, Launchdemons has 2 files, one from Adobe and another from Memeo. Memeo is my backup and I had this for 3 years, but I would'nt be surprised if Adobe somehows glitches and makes my internet go haywire.

If I delete this file, what would happen? Will I lose youtube?
No, you won't lose YouTube - Flash doesn't use any Launch Daemons.
 

ScoobyMcDoo

macrumors 65816
Nov 26, 2007
1,188
35
Austin, TX
Just to make sure this is a name server problem, open network utility, go to the lookup tab, type the name of site you are having trouble looking up, click Lookup. Post the results.

Also, go to settings->network Choose the interface you are using on the left. Post what you see on the right. Click Advanced, then DNS tab. Post what you see.
 

LeandrodaFL

macrumors 6502a
Original poster
Apr 6, 2011
962
1
Just to make sure this is a name server problem, open network utility, go to the lookup tab, type the name of site you are having trouble looking up, click Lookup. Post the results.

Also, go to settings->network Choose the interface you are using on the left. Post what you see on the right. Click Advanced, then DNS tab. Post what you see.
Things look exactly the same when the internet is working. I did both tests when it stoped last night, and again today after a startup. Please note that I put a white retangular above my IP adress, so in the 2nd picture, it appears as if nothing is there, but it is indeed showing my exact IP adress, same as in 1st picture.
 

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LeandrodaFL

macrumors 6502a
Original poster
Apr 6, 2011
962
1
Hmm. Well it looks like it is resolving the http://www.anandtech.com address correctly.

Can you be a little more specific than "The internet stops working"? What exactly do you see happen?

Also, have you tried multiple browsers?
I believe its my internet service provider fault, my building offers free wi-fi. Free internet can never be good, Im gonna move to a paid service next year. But anyways what happens is...

No page loads (except google), it keeps trying to load forever (both firefox and safari). Applications may or may not work. Mail stops getting new emails. However, Skype works. Clipgrab doenst.

I thnak the help.
 

ScoobyMcDoo

macrumors 65816
Nov 26, 2007
1,188
35
Austin, TX
You might adding 8.8.8.8 as the primary DNS - that might help.

You never know on a public access point though. I knew of a guy that wrote some software that would trick people into using his laptop as an access point which acted as a proxy to the real access point. He would go to Starbucks and use this software just to mess with people. He could at will increase/decrease anyones bandwidth. Could have been logging data also I suppose.

Make sure you have your firewall enabled when you are on a public access point.
 

LeandrodaFL

macrumors 6502a
Original poster
Apr 6, 2011
962
1
Its not really public, just for the building, its actually wired, a ethernet port in each apartment with free internet, and they also give you a Router, but its my private network. Havis said that.....Heres more info when internet down, I could not acess apple.com, dunno if it means anything. I got the first one for http://www.apple.com and the 2n pic for http://www.apple.com
 

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