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Internet, Networking, and Wireless
Internet Connection Slow - Leopard DNS/Airport issue
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<blockquote data-quote="muso" data-source="post: 607373" data-attributes="member: 40"><p><strong>Leopard DNS / Slow Internet Issue</strong></p><p></p><p>For those people finding that safari takes a long time to respond to a new address, and the internet is generally quite slow to respond to anything (<em>even though you may be getting normal download speeds</em>), I've done a bit of research and discovered some ways to fix it. </p><p></p><p>It seems to occur when you are connecting through a router (airport or otherwise) to the internet. The problem appears to be some new technology in leopard that handles DNS resolution differently. DNS (domain name servers) are the addresses of the servers that translate what you type into safari or other apps into IP addresses and thereby allow your computer to retrieve information from the server you want. For example, if you type in google.com, your dns servers are what translate that into the IP address 64.233.187.99. You will notice you get google if you type in that number into safari.</p><p></p><p>Now, for some reason, I'm not sure why, leopard doesn't play too nicely with wireless connections, routers and automatic dns servers. You can get around it by specifying non-router-assigned dns servers (for example, your ISP's ones, or opendns.org's ones). If you don't want to use opendns, find out your ISP's dns servers <em>before</em> going further - either by looking in your modem config pages, or phoning them.</p><p></p><p><strong>Setup: Your computer -> wireless connection -> airport base station or wireless router -> modem -> internet</strong></p><p></p><p>If you have airport, under your airport config, change the DNS servers to whatever the WAN IP of your airport is. You will notice that under system prefs -> network -> advanced -> dns, you cannot remove the first one or two there, which are the automatic router (and possibly your modem) dns servers. We want to make sure that these aren't used, so we're assigning the airport base station to look up itself, error immediately, and move onto the ones that <strong>you</strong> want to use.</p><p></p><p>If you don't use the airport base station (like me - I have a linksys router and a dlink adsl modem, both very substandard) it might be slightly different. My method was to go into <strong>both</strong> the modem and the router config pages (192.168.1.1 and 10.1.1.1) and turn off DNS services. Some routers and won't let you do this, so you might have to try the above method for airport and tell it that the servers are itself.</p><p></p><p>After this is done, head to system preferences -> network -> airport -> advanced -> dns. Click the plus sign and enter either your dns servers of choice. It shouldn't matter whether you put in opendns or your isp's, it's entirely up to you. If you want the opendns.org ones they are 208.67.222.222 and 208.67.220.220. </p><p></p><p>With any luck, your internet problems should be fixed now. Post here if you are still having problems.</p></blockquote><p></p>
[QUOTE="muso, post: 607373, member: 40"] [b]Leopard DNS / Slow Internet Issue[/b] For those people finding that safari takes a long time to respond to a new address, and the internet is generally quite slow to respond to anything ([i]even though you may be getting normal download speeds[/i]), I've done a bit of research and discovered some ways to fix it. It seems to occur when you are connecting through a router (airport or otherwise) to the internet. The problem appears to be some new technology in leopard that handles DNS resolution differently. DNS (domain name servers) are the addresses of the servers that translate what you type into safari or other apps into IP addresses and thereby allow your computer to retrieve information from the server you want. For example, if you type in google.com, your dns servers are what translate that into the IP address 64.233.187.99. You will notice you get google if you type in that number into safari. Now, for some reason, I'm not sure why, leopard doesn't play too nicely with wireless connections, routers and automatic dns servers. You can get around it by specifying non-router-assigned dns servers (for example, your ISP's ones, or opendns.org's ones). If you don't want to use opendns, find out your ISP's dns servers [i]before[/i] going further - either by looking in your modem config pages, or phoning them. [b]Setup: Your computer -> wireless connection -> airport base station or wireless router -> modem -> internet[/b] If you have airport, under your airport config, change the DNS servers to whatever the WAN IP of your airport is. You will notice that under system prefs -> network -> advanced -> dns, you cannot remove the first one or two there, which are the automatic router (and possibly your modem) dns servers. We want to make sure that these aren't used, so we're assigning the airport base station to look up itself, error immediately, and move onto the ones that [b]you[/b] want to use. If you don't use the airport base station (like me - I have a linksys router and a dlink adsl modem, both very substandard) it might be slightly different. My method was to go into [b]both[/b] the modem and the router config pages (192.168.1.1 and 10.1.1.1) and turn off DNS services. Some routers and won't let you do this, so you might have to try the above method for airport and tell it that the servers are itself. After this is done, head to system preferences -> network -> airport -> advanced -> dns. Click the plus sign and enter either your dns servers of choice. It shouldn't matter whether you put in opendns or your isp's, it's entirely up to you. If you want the opendns.org ones they are 208.67.222.222 and 208.67.220.220. With any luck, your internet problems should be fixed now. Post here if you are still having problems. [/QUOTE]
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