Hi I heard a lot of attak by denial of service. But I can't get what it is. Can somebody explain it to me or point a site about it. thanks charlie ti
Charlie Ti wrote:
Hi I heard a lot of attak by denial of service. But I can't get what it is. Can somebody explain it to me or point a site about it.
thanks charlie ti
Hi Charlie, Have a look at: http://www.cert.org/tech_tips/denial_of_service.html -- << And the knowledge that we fear... >> << is a weapon to be held against us. >> -- Neil Peart ---***---***---***---***---***---***---***---***---***---***---***--- Richard Witt Phone: (330) 672-0096 Dept. of Physics, Kent State University Email: witt@cnr2.kent.edu ---***---***---***---***---***---***---***---***---***---***---***---
Charlie Ti wrote:
I heard a lot of attak by denial of service. But I can't get what it is. Can somebody explain it to me or point a site about it.
Briefly: a Denial of Service attack occurs when an attacker floods a website with spurious, useless Internet packets, thus consuming the website's entire capacity to process incoming traffic. A Distributed Denial of Service attack occurs when the attacker plants zombie processes at other websites and each of those processes produces a Denial of Service attack on command. The hosts for the zombie processes are innocent victims whose resources are used to mount the attack. Paul
On Tue, 05 Jun 2001 11:28:37 -0400
Paul Abrahams
Charlie Ti wrote:
I heard a lot of attak by denial of service. But I can't get what it is. Can somebody explain it to me or point a site about it.
Briefly: a Denial of Service attack occurs when an attacker floods a website with spurious, useless Internet packets, thus consuming the website's entire capacity to process incoming traffic. A Distributed Denial of Service attack occurs when the attacker plants zombie processes at other websites and each of those processes produces a Denial of Service attack on command. The hosts for the zombie processes are innocent victims whose resources are used to mount the attack.
And for an interesting recent example with some XP implications, have a look at http://grc.com/dos/grcdos.htm Regards, Geoff _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com
At 11:28 AM 6/5/01, Paul Abrahams wrote:
Charlie Ti wrote:
I heard a lot of attak by denial of service. But I can't get what it is. Can somebody explain it to me or point a site about it.
Briefly: a Denial of Service attack occurs when an attacker floods a website with spurious, useless Internet packets, thus consuming the website's entire capacity to process incoming traffic. A Distributed Denial of Service attack occurs when the attacker plants zombie processes at other websites and each of those processes produces a Denial of Service attack on command. The hosts for the zombie processes are innocent victims whose resources are used to mount the attack.
See: [Slashdot Effect] ;-) Rick Barnes _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com
From what I understand. A DDoS/DoS (directed denial of service/denial of service) attack uses several Zombie computers (computers with trojan horses/IRC bots) to get these computers to send an enormous amount of nonsence requests to a "specific" server. If you have 300-400 computers, send these requests-over and over, you overload the server. It does this by stuffing the pipeline to the ports of the server so much that legitimate users can't access the net and the server spends all its resources responding to the flood of nonsence request. Hence the name Denial of Service because end user are denied a service because the line is being hogged and it times out on the end-user before connecting.
Cheers. Curtis On Tuesday 05 June 2001 10:14 am, Charlie Ti wrote:
Hi I heard a lot of attak by denial of service. But I can't get what it is. Can somebody explain it to me or point a site about it.
thanks charlie ti
NP A denial of service (DOS) is just what it says... Instead of 'breaking' into a computer and stealing information, someone can also do damage by making sure that certain are all services of that computer are unavailable. This could mean that the entire machine crashes, or that some services are down. The risc of DOS attacks can be great. Imagine an E-commerce site not actually having it's security breached, but being offline for a day... or longer. Kind regards Guy
>>>>>>>>>>>> Original Message <<<<<<<<<<<<<<<<<<
On 05/06/2001, 17:14:21, Charlie Ti
Hi I heard a lot of attak by denial of service. But I can't get what it is. Can somebody explain it to me or point a site about it.
thanks charlie ti
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participants (7)
-
Charlie Ti -
Curtis Rey -
Guy Van Sanden -
Paul Abrahams -
quintaq＠yahoo.co.uk -
Richard Witt -
Rick Barnes