Networking & Wireless forum


How do I prevent a smurf attack?

by mdreber / February 5, 2014 1:25 AM PST

Last night my internet connection took an absolute crap. I was messing around on the router login page, and while looking at the log, noticed something about a smurf attack. I'm honestly not that smart on all of this stuff. I'm trying to read up on what the heck a smurf attack is. I kind of get it. Right now, I just want to stop it. I'm on a website telling me to "shut off the broadcast addressing feature of the external router and firewall". So how do I do that? I'm assuming there won't be a little check box in my router login page that says "check here if you'd like to shut off the broadcast addressing feature". Any ideas on how I can prevent this smurf attack? Thanks.

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All Answers

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As you guessed, you would have to get off the internet.
by R. Proffitt Forum moderator / February 5, 2014 1:28 AM PST
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Ongoing smurf attack
by mdreber / February 14, 2014 9:01 PM PST

Still have issues. Looked at the recommended Wikipedia link, but didn't help much in terms of preventing the smurf attack. Based on my router log, the smurf attack comes from my computer's IP. I'm really not that smart with this stuff. But based on what I'm finding on the internet, my router is set up properly to prevent smurf attacks from happening. Anyone have any experience with this? My internet is practically unusable right now because of how slow it is.

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by R. Proffitt Forum moderator / February 15, 2014 12:58 AM PST
In reply to: Ongoing smurf attack

Remember that the return address can be spoofed and a new to networking person would think that's correct.

It will take time for the new networker to catch up.

In the meantime you could share more about your PC use. We see this a lot with torrent users. So when the attack is happening, go get HIJACKTHIS and share the log here. I'd check to see if any of the usual apps that cause attention like this are running.

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by mdreber / February 20, 2014 11:33 AM PST
In reply to: True.

I tried running the HIJACKTHIS. I'm getting some error messages trying to save the log file. Again, I emphasize I'm stupid when it comes to anything computer related. The HIJACKTHIS had an analyze button. Whenever I clicked that, it would tell me I had no internet connection???

Someone told me if I received a new IP address, it may fix things. I spoke with Comcast, and was under the impression that if I got a new modem, my IP address would change. Just got a new modem today (supplied by Comcast)...same IP. Still have a smurf attack when I look at the log file on my router.

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