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DNS address affect my LAN

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by dgkem06 1 view

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It is going for while. I don't understand what is going on. I have LAN 12 computers (Windows XP Pro SP2) with SBS 2K SP4 and 3 printers connected to LAN. Connection to Internet is partial T1 around 800 kbps. All workstations obtain IP address automatically via DHCP from the Server. If DNS addresses obtained automatically when I go on any website it is doing this very slow and LAN access very stable and quick. But as soon as I change my DNS settings to use following DNS server addresses and put addresses provided by my ISP I can get to same websites almost instantly. But there is a catch, at some point I will lose my ability to access my LAN resourses such as mapped drives and printers. Is anybody ran in to the similar problem? Please advise. Thank you.

3 replies

by churdoo

In your SBS, check the DNS settings ... particularly, you want the SBS DNS Server to use Forwarders which should be populated with your ISP DNS resolvers. This is in the DNS mmc / Server name / properties / Forwarders tab. I'm pretty sure this is covered in the SBS 2003 CEICW, but I don't know about SBS 2000, so check the DNS MMC.

You still want your DHCP to hand out the IP of your SBS as the FIRST DNS resolver -- you may put your ISP DNS as second and on if you wish (this will let your users surf at least the internet if your single-NIC SBS goes down)

by dgkem06

Thank you very much for your help. Your directions gave me an idea where to look. Problem was that DNS servers addresses provided by ISP wheren't within Forwarders tab. It was only that server LAN IP this why I think it took a while to go to Internet. As soon as add DNS IPs to that list and apply everything started work normally. Thanks a lot again.

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