taking down the internet
Download
Skip this Video
Download Presentation
Taking Down the Internet

Loading in 2 Seconds...

play fullscreen
1 / 24

Taking Down the Internet - PowerPoint PPT Presentation


  • 70 Views
  • Uploaded on

Taking Down the Internet. Dmitry O. Gryaznov, Sr. Research Architect. Date: Sat, 25 Jan 2003 05:34:07 GMT. South Korea “disappears” Troubles with U.S. ATMs and flights ticketing General Internet slowdown: up to 20% of IP packets lost. W32/SQLSlammer. Only 376 bytes long

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Taking Down the Internet' - piper


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
taking down the internet

Taking Down the Internet

Dmitry O. Gryaznov, Sr. Research Architect

date sat 25 jan 2003 05 34 07 gmt
Date: Sat, 25 Jan 2003 05:34:07 GMT
  • South Korea “disappears”
  • Troubles with U.S. ATMs and flights ticketing
  • General Internet slowdown: up to 20% of IP packets lost
w32 sqlslammer
W32/SQLSlammer
  • Only 376 bytes long
  • Exploits a buffer overflow in MS SQL Server
  • Spreads by sending itself to UDP port 1434 at random IP addresses
mass mailing viruses
Mass-mailing viruses
  • Send thousands of copies by E-mail
  • Can affect mailservers badly
  • Need to connect to a mailserver and follow a mail protocol
  • Require a user
sample smtp session
Sample SMTP session

Client Server

(connects to TCP port 25) 220 SMTP ready

HELO mydomain.net 250 Welcome

MAIL FROM:<[email protected]> 250 Sender OK

RCPT TO:<[email protected]> 250 Recipient OK

DATA 354 Send the data

(message content) . 250 Accepted for delivery

QUIT 221 Bye

codered and likes
CodeRed and likes
  • Exploit vulnerabilities in TCP servers (e.g. a buffer overflow in MS IIS)
  • Need to connect to a server and follow a protocol (e.g. HTTP)
  • Do NOT require a user
  • Do not affect the Internet noticeably
sample http session
Sample HTTP session

Client Server

(connects to TCP port 80)

GET /us/index.asp HTTP/1.0Host: www.somewhere.net

HTTP/1.1 200 OK Server: Microsoft-IIS/5.0 Last-Modified: Tue, 23 Sep 2003 00:41:05 GMT Content-Length: 43585 Content-Type: text/html Connection: close (43585 bytes of data)

slammer
Slammer
  • Connectionless UDP, “shoot and forget”
  • A single infected PC exhausts 100Mbps bandwidth – over 30,000 “shots” per second; could attack each and every computer on the Internet in less than a day
  • Much faster in reality – “chain reaction”; took 10-15 minutes to reach its saturation level at 100-200 thousand infected computers worldwide
is it possible to take down the internet
Is it possible to take down the Internet?
  • 100-200 thousand Slammer-infected computers – 20% IP packets lost
  • 1,000,000 computers - ?
  • 580,000,000 Internet users worldwide
  • Over 14,000 different “backdoors” in Usenet in May-June 2003; millions of readers
  • IRC, P2P, etc.
the wildlist asia
The WildList Asia

Source: WildList Org.

the wildlist israel
The WildListIsrael

Source: WildList Org.

the wildlist india
The WildListIndia

Source: WildList Org.

the wildlist korea
The WildListKorea

Source: WildList Org.

the wildlist australia
The WildList Australia

Source: WildList Org.

the wildlist asia1
The WildList Asia

Source: WildList Org.

ad