What is a Denial of Service attack?

Mar 01, 2007 13 Replies
What is a Denial of Service attack? open original image

My Router is telling me that each day I'm getting around six DoS which are being blocked. What is a Denial of Service?



Beemer


Have you ever seen GOOGLE.COM? Try typing DOS ATTACK in the search box.

And if it's only 6 you're not really getting a DDOS attack.

DoS isn't limited to DDoS. Remember good'ol Windows 95? A single Ping could bring it down.

Which is most likely something alike the router catched up? Not running such old, vulnerable stuff anymore? Just disable this DoS detection function, it's useless and probably a way to DoS yourself.

If I recall correctly the simple act of turning on a 95 box could cause it to die. :)

A simple ping is enough to take down virtually any modern link if you send enough packets to overwhelm the available bandwidth.

A Ping is limited to one ICMP segment, thus at best 64K of data. Again, you're referring to bandwidth-flooding.

Not so far, go a month before and remember: Receiving a single ping packet could be enough to provoke a kernel panic in Solaris 10 systems.

Wolfgang

Hi Beemer,

You may wish to investigate Denial-of-service attack:

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Furthermore, you may wish to report your incident:

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Hope this helps.

Brad Reese on Cisco Network World Magazine Cisco Subnet

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You may also want to checkout the following article

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Yes -- Which by definition is a DoS attack.

No, really? We didn't know that.

Ahh the daily dose of sarcasm. Got to love it.

Ya really, I wouldn't lie. Would this thread exist if everyone involved understood the statement? (Not likely).

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