Networks will "connect" over Wifi, but DNS resolution is impossible and I can't access the internet.

My OSX 10.7.5 iMac (late 2011) will connect to my university's wireless network and thinks it's connected to the internet, but cannot resolve any DNS - and cannot actually access the internet on any browser or internet-utilising app. My university has 2 networks, a regular wifi one and an eduroam one. I have the same problem on both networks. My MacBook, running Snow Leopard, and my iPad (latest software) both connect to both networks just fine.
Because it's my university's network, i can't reset my router or anything like that. I'm in halls. I don't think it's a network issue, because all my other devices are fine.
I've searched high and low on these forums but haven't found anyone having exactly the same problem as me - I've heard of odd few minutes of people losing their connections in this manner, but my computer's been down now for hours and nothing. I've restarted it many times, even once in "Recovery Mode" and I'm getting nothing. I've followed instructions to flush my DNS cache, renew DHCP leases, I've tried manually inputting various DNSes I've found (eg the 8.8.8.8 and 8.8.4.4 google ones), none of which have worked.
Using terminal, I can't ping either an http:// domain, or an IP address. Both get "timed out" as a response. I can't access the internet on any browser (chrome, safari, firefox), my google mail notifier, Skype, or my twitter app. Or anything else.
I'm relatively computer literate, but I'm not particularly code-savvy, so I'd really appreciate it if I could get some step-by step help on here, bearing in mind what I've already tried. I'm really worried, because it all seems to have happened completely out of the blue. Last time I updated was some time a couple weeks ago; I update whenever my software update beeps at me.
Thanks.
link.

Go step by step and test.
1.Power Cycle
   Power off the router. Unplug it from the wall. Wait a while.
   Plug it back to the wall. Power the router on. Wait until all the lights are lit properly.
   It will take a while.
Restart the computer.
Start up in Safe Mode.
   http://support.apple.com/kb/PH11212?viewlocale=en_US
2. Turn off Extensions, if any.
     Safari > Preferences > Extensions
3. Turn off proxies, if selected.
     System Preference > Network > Advanced > Proxies Tab
     Under "Select Protocol", uncheck any box if selected.
     Click "OK" then "Apply"
4. Uninstall anti-virus software, if any.

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My computer will connect to wifi but not the Internet

My computer will connect to wifi but not the Internet. It's not a problem with my router because I've tried other devices on the same router and they work. I have also tried my computer on other routers and there is still no Internet connection. Does anyone know how to fix this?

Hello Bmowat,
Thank you for using Apple Support Communities!
It sounds like you are able to successfully connect to your Wifi network, but cannot get internet access.
I found this article for you named Wi-Fi: How to troubleshoot Wi-Fi connectivity found here http://support.apple.com/kb/HT4628?viewlocale=en_US
This section in particular since you have Mountain Lion installed:
OS X Mountain Lion v10.8.4 or later
Use the Wireless Diagnostics application included with OS X Mountain Lion v10.8.4 and later to identify and resolve Wi-Fi issues. For further information, please see About Wireless Diagnostics.
It is a built in troubleshooting tool to help diagnose and repair network issues and should help you resolve this issue.
All the very best,
Sterling

Macbook will connect to wifi but will not connect to internet

Lately I've been experiencing an issue with my internet, my computer will connect to wifi, but the internet will not work. I have tried multiple wifi networks, and sometimes the internet works but it is slow, or sometimes it won't work at all. For whatever reason apple.com is the only one working at the moment.. how convienent.. I have rebooted my laptop, the router and my operating system is up to date. Please help!! I'm a college student and internet is crucial for one of my classes!

Check proxies ...
Open System Preferences > Network > Advanced > Proxies
Deselect any checked boxes on the left then click OK.
Relaunch your browser to test.
And make sure the firewall is off. System Preferences > Securty & Privacy > Firewall
If it's on, you may need to click the lock icon to turn if off. You may be prompted for your admin password.
Message edited by: CS

HT1430 My iPad isn't getting connection to internet. It just suddenly stopped! It says it is connected to WiFi but it just keeps spinning and nothing will come up. Have tried rebooting my router and iPad (my other computer is connected just fine).

My iPad isn't getting connection to internet. It just suddenly stopped! It says it is connected to WiFi but it just keeps spinning and nothing will come up. Have tried rebooting my router and iPad (my other computer is connected just fine).

Try turning WiFi off on the iPad, then reset it again, turn WiFi on again and join your network again if necessary. Or go to Settings>WiFi>Your network name>Forget this network. Reset your iPad and then join your network again. Or - settings>General>Reset>Reset network settings. Reset the iPad, then try to join your network again.

Why my iphone 4 connect to wifi, but when i open safari and search something it say i not connect.. but in the same house my sister using iphone4 too but she can online with the same router

why my iphone 4 connect to wifi, but when i open safari and search something it say i not connect.. but in the same house my sister using iphone4 too but she can online with the same router. i go and check over the detail of the network i connected, over the ip address and subnet mask have the numbers, but over the DNS and router don't have any number...isit the problem???? i can online at any other place but just my home cant...y????

Hey confuddled_chica!
Try the steps in the article below to troubleshoot this issue:
iOS: Troubleshooting Wi-Fi networks and connections
http://support.apple.com/kb/ts1398
Thanks for being a part of the Apple Support Communities!
Regards,
Braden

HT1695 My iPad shows it is connected to the Internet wherever there is free wifi but it is getting up and I can't get it to work? I tried rebooting but it didn't help. Any suggestions?

My iPad shows it is connected to the Internet wherever there is free wifi but it is getting up and I can't get it to work? I tried rebooting but it didn't help. Any suggestions?

Some things to try first:
1. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
2. Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
3. Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
4. Go into your router security settings and change from WEP to WPA with AES.
5. Renew IP Address: (especially if you are droping internet connection)
    •    Launch Settings app
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~~~~~~~~~~~~~~~~~~~~~~~~~
iOS 6 Wifi Problems/Fixes
Fix For iOS 6 WiFi Problems?
http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
iOS 6 iPad 3 wi-fi "connection fix" for netgear router
http://www.youtube.com/watch?v=XsWS4ha-dn0
Apple's iOS 6 Wi-Fi problems
http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
~~~~~~~~~~~~~~~~~~~~~~~
Look at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
WiFi Connecting/Troubleshooting http://www.apple.com/support/ipad/wifi/
How to Fix: My iPad Won't Connect to WiFi
http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
iOS: Connecting to the Internet http://support.apple.com/kb/HT1695
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issue http://tinyurl.com/7nvxbmz
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
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~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

A website will open via wifi but not via 3G. Is this a setting on the iPad?

A website will open via wifi but not via 3G. Is this a setting on the iPad?

Probably not. How's your 3G connection? I ask because I've had issues when the 3G connection isn't strong. Same with WiFi too, actually.

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I am trying to connect my Ipad 2 to my Mac Air over bluetooth.
I can connect them to each other, and both machines say they are connected over bluetooth.
However I can not access the internet on the Ipad...says it is not connected to the internet.
Does anyone know if you can fix this?
THank you

Yes I tried this manyfold. But did not work. Reading on, I took Tesserac's advice. Shut down router and computer.
Start router after 15 minutes and wait another 10 minutes before starting the computer.
Et voila.... everything is back in working order,
Regards form Curacao, Dutch Caribean.
Pete van Linden

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Message Edited by EsTiLO on 02-02-2008 02:26 PM

I'm actually the 15-year-old son of the person this account is signed up for (he's making me fix it because he has other things to do), but anyway, I'm experiencing the same problem, but I will go into a bit more detail than Estilo to verify it is the same and hopefully get a bit more help:
My dad's computer can connect straight to the modem (MSN Arescom NetDSL 800) and run the internet just fine, but only his computer; I've tried plugging my Xbox 360 directly into the modem, and it cannot connect because the ISP knows that it's not my dad's computer...?
But the internet will not run through the router to any computers connected to it. My dad's computer is even wired to the router, and still no internet. We've found that it's an IP issue, and trying to change that doesn't work as it give us a "169" IP (a "router is there, but I can't communicate with it" IP address) whenever we try to fix anything, rather than the "192.168.1.1" or ".2" that we should have.
My dad thinks (and I'm not entirely sure he's correctly, but I mostly agree with him) that the computer is the actual central hub for the internet, as in that it runs the administrative settings and makes the internet actually work for the rest of the computers (if his computer isn't on, no other computer can connect to the internet); the router is basically just a splitter.
The thing is, though, that this problem started randomly about 2 weeks ago as my dad was just looking up some things on craigslist.com; that was the point when the IP addresses changed completely for an undiscernable reason. And 2 weeks ago, my computer was able to connect to the router wirelessly and access the administrative settings. My cousin (who works in this stuff) recommended that I see what I can do to fix the problem by editing the administrative settings from my computer, but now I cannot connect to the router whatsoever.
My dad and I have narrowed it down to a driver problem, and I'm not sure what to do about it. The reason for this is we tried getting a new router (the WRT54G), and the same connection issue remained. If this is the problem, you know what the problem really is, or you have questions, let both me and Estilo know.
Simplified Outline:
+ comp to modem (MSN Arescom NetDSL 800) [working]
+ comp to router (BEFW11S4) [failed]
+ comp to new router (WRT54G) [failed]
+ router to internet [failed] (incorrect IP to connect to ISP)
+ not a router problem
? driver problem
? designated computer needed as central hub
- wireless connection to router was recognized (no longer works?)
Message Edited by guitarfood on 02-03-2008 03:23 PM

IPAD 2 WiFi only. Can I access the Internet when I plug into my computer that is connected to a LAN?

I just purchased an IPAD2 and I love it. It's WIFI only, and I want to access the Internet when I plug in to my computer since I don't have 3G capability. But when I try and connect it won't allow. Is this standard? Am I preventing from high speed internet access on my IPAD 2 even when my computer is connected to the Internet? Any help would be much appreciated

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It may be possible to configure your PC as a WiFi access point. Check your PC documentation for its capabilities.
Or, purchase a WiFi router and hook it up to your ISP modem. You can hardwire your PC to the modem.
Good WiFi routers can be purchased for $30-$40 dollars if you shop around.

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What does "it is continued when off" mean?
And the same for "somtimes can not working"?

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Be sure to Follow ALL the Steps...
jennfromla wrote:
... I have never plugged it into a computer...
Note:
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Networks will "connect" over Wifi, but DNS resolution is impossible and I can't access the internet.

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