Re: Slow Browsing Internet

CAMC1 wrote:
Can anyone suggest a solution to problem below?

- From time to time, browsing internet from our LAN is really slow, and
opening any pages time out from any websites
- Browsing internet from outside firewall seem ok
- 2 windows Active Directory 2000 DC with DNS, DHCP and WINS enabled
completely patched.
- In our internal network, some windows 98, and NT4 workstations that can't
be patched and old Anti-Virus may not be working correctly
but they have to be on the LAN, and upgrade costs would be huge.
I know, one of these PC could be acting like zombie inside which may be
slowing down web browsing.
When we re-boot 2 DC fresh, browsing problem goes away, a few days.

Do you think, having another DNS sever would solve our problem?
How would I know if DNS server bogged down when there is no apparant
indication?

Thanks
MC



Chances are that it is not related to DNS. I would guess you may have a virus that is trying to phone home. Or it could possibly be a broadcast storm on your network.

In either of these scenarios, one host on your network could be sending large amounts of data, flooding your LAN.

If this is the case, it's easy to determine which host it is.. though it will take some time, so clear your afternoon schedule!

Easiest way is to take your laptop (hopefully you have one) and plug it into your network switch. Do this when the Internet is running slowly. Then, one by one, unplug each device from the switch and try to surf the internet again from your laptop. If it's still slow, plug it back in and move on the the next one. If the Internet moves faster, you now know where the problem lies.

Good Luck
.

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