WiFi connected but browsers and mail stop working

Here's the situation:

iMac, 4 years, OS X 10.7.5

WiFi connected but, browsers and mail stop working sometimes recently.

Checked the wifi & browser settings.

Do not remember something like what happens when connected online cat5.

Curious to know what is happening.

Say local store card is perhaps go wrong.

The machine is only 8 ' of router.

Another pc on the network does not appear to be a problem.

Any help appreciated.

You can connect an Ethernet cable to see if it works on Ethernet when you encounter problems easily?

Try to use your own DNS server.  Because if the DNS server that you use currently is not translate www.company.com name to IP address nn.nn.nn.nn, it will look like you do not have internet access.

System Preferences-> network-> advanced-> DNS-> [+]

OpenDNS.org

208.67.222.222

208.67.220.220

Google DNS

8.8.8.8

8.8.4.4

You can remove them later if you want using the [---] button.

If this does not work, it could mean that your router is having problems.  Most routers act as the local DNS server, make a cache and especially fair bet as a DNS server provided a front for the access provider.  If the router begins to act, it can often be cleared by power cycling the router.

And once again, if you provide your own DNS server works, then it could be DNS servers of the ISP, but less likely that they would be getting a lot of complaints from their customers (assuming that customers thought it was DNS servers).

You know, there are 2 sides to any path of communications.

If it is technically possible for radio Wi - Fi of the iMac to fail, it's actually not very common.

Tags: Mac OS & System Software

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