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I think my DSL connection is the victim of a DoS attack. I contacted my ISP but they don't seem all that interested. Is there anything I can do to stop it? It's been going on non-stop for three or more days.

We need some more info... could you describe the symptoms you are experiencing? Chances are it may be something else beside DoS Attack.
i_XpUser

Well, it takes longer to load a web site or download a file than it used to. Somes files I haven't been able to download at all. The other day I looked at ZoneAlarm's logs and saw that it had blocked over 9,000 intrusions in a single day.

If you use XP it has a period when it just slows down all of a sudden for no reason but it does sound like a DDOS attack and there isnt alot really to stop it, its the most effictive attack on the internet right now and even some websites cant stop it
~White Hat~

No, I use Windows Me. I read that the only thing you can do is change your IP address. But I don't know if I can do this on my own or if my ISP has to assign me a new one.

Yeah becuase with DSL you have a static IP Address.I stick with dial up for that reason and also for other security related issues.
~White Hat~

I know the feeling man...non stop attacks that keep on disconnecting me form the net , the attacks for me have gone on for about 1 week so far.

Well, I think the answer is rather simple. Call your ISP and ask to have your IP changed, if they say they can't have them forward you to a "senior tech" eventually you will get someone with enough knowledge to help you. DoS is not impossible to stop, you could also try this to refresh your ip.
(Do ALL the steps, not just a few)
Unplug your modem (the box that flashes lights, indication internet activity)
wait 30 seconds and reboot
once loaded, plug it back in
wait for the status to flash
then click the start button and click run
type in cmd and hit Ok or enter
from the prompt, type winipcfg /release all
then winipcfg /renew allif that fails try
type ipconfig /release all
ipconfig /renew allI dont remember which is used in ME.
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Another really good idea, depending appon the firewall you used, you could look at the log file, see what IP is attacking you, then open up your firewall and manually block the ip, so you no longer accept packets from it.
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Personally, I think your best bet to stop this attack and prevent future attacks is a combination of obtaining a new IP, blocking the bad IP address, and securing your connection (meaning running antivirus, spyware scanners, and windows updates) this should take care of your problem.
You didnt mention is the attacker using one IP or multiple? What is the IP, also what is the packet of data sent? Can you tell us as much about the attack as possible. It could simply be a spyware company or something frivilous.

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