Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

System halts computer viruses, worms, before end-user stage

12.11.2003


Scanning all of Shakespeare in 1/60th of a second


John Lockwood, Ph.D., assistant professor of computer science and engineering, programs the data enabling device to thwart the SoBig worm. Lockwood and his graduate students have approached the problem of halting worms and viruses via hardware instead of software. When a virus or worm is detected, the system either can drop the malicious traffic or generate a pop-up message on an end-user’s computer.



A computer scientist at Washington University in St. Louis has developed technology to stop malicious software - malware - such as viruses and worms long before it even has a chance to reach computers in the home and office.

John Lockwood, Ph.D., an assistant professor of computer science at Washington University, and the graduate students that work in his research laboratory have developed a hardware platform called the Field-programmable Port Extender (FPX) that scans for malware transmitted over a network and filters out unwanted data.



"The FPX uses several patented technologies in order to scan for the signatures of malware quickly," said Lockwood. "Unlike existing network intrusion systems, the FPX uses hardware, not software, to scan data quickly. The FPX can scan each and every byte of every data packet transmitted through a network at a rate of 2.4 billion bits per second. In other words, the FPX could scan every word in the entire works of Shakespeare in about 1/60th of a second."

Lockwood published his results in Military and Aerospace Programmable Logic Device (MALPD), Sept.,2003.

The paper is dowloadable online at:
http://www.arl.wustl.edu/~lockwood/publications/MAPLD_2003_e10_lockwood_p.pdf.

Computer virus and Internet worm attacks are aggravating, costly, and a threat to our homeland security. Recent attacks by Nimba, Code Red, Slammer, SoBigF, and MSBlast have infected computers globally, clogged large computer networks, and degraded corporate productivity. It can take weeks to months for Information Technology staff to clean up all of the computers throughout a network after an outbreak. The direct cost to recover from just the ’Code Red version two’ worm alone was $2.6 billion.

The United States has come to depend on computers to support its critical infrastructure. The nation’s power system, financial networks, and military infrastructure all rely on computers to operate. As a form of terrorism, a foreign agent could introduce a malignant worm or virus disguised as benign data to attack computers throughout a network. Terrorists could use this malware to bring down crucial components of our corporate infrastructure and military.

In much the same way that a human virus spreads between people that come in contact, computer viruses and Internet worms spread when computers come in contact over the Internet. Viruses spread when a computer user downloads unsafe software, opens a malicious attachment, or exchanges infected computer programs over a network. An Internet Worm spreads over the network automatically when malicious software exploits one or more vulnerabilities in an operating system, a Web server, a database application, or an email exchange system.

Existing firewalls do little to protect against such attacks. Once a few systems are compromised, they proceed to infect other machines, which in turn quickly spread throughout a network.

"As is the case with the spread of a contagious disease like SARS, the number of infected computers will grow exponentially unless contained," Lockwood said. "The speed of today’s computers and vast reach of the Internet, however, make a computer virus or Internet worm spread much faster than human diseases. In the case of SoBigF, over one million computers were infected within the first 24 hours and over 200 million computers were infected within a week."

Today, most Internet worms and viruses are not detected until after they reach an end-user’s personal computer. It is difficult for companies, universities, and government agencies to maintain network-wide security.

Unfair burden on end-users

"Placing the burden of detection on the end -user isn’t efficient or trustworthy because individuals tend to ignore warnings about installing new protection software and the latest security updates, "Lockwood pointed out. "New vulnerabilities are discovered daily, but not all users take the time to download new patches the moment they are posted. It can take weeks for an IT department to eradicate old versions of vulnerable software running on end-system computers."

The high speed of the FPX is possible because the logic on the FPX is implemented as Field Programmable Gate Array (FPGA) circuits, Lockwood explained. These circuits are used to scan and filter Internet traffic for worms and viruses using FPGA circuits that operate in parallel. Lockwood’s group has developed and implemented circuits that process the Internet protocol (IP) packets directly in hardware. They also have developed several circuits that rapidly scan streams of data for strings or regular expressions in order to find the signatures of malware carried within the payload of Internet packets.

"On the FPX, the reconfigurable hardware can be dynamically reconfigured over the network to search for new attack patterns," Lockwood said. "Should a new Internet worm or virus be detected, multiple FPX devices can be immediately programmed to search for their signatures. Each FPX device then filters traffic passing over the network, so that it can immediately quarantine a virus or Internet worms within sub networks (subnets). By just installing a few such devices between subnets, a single device can protect thousands of users. By installing multiple devices at key locations throughout a network, large networks can be protected."

A local St. Louis company, Global Velocity, is building commercial systems that use the FPX technology. The company is working with local companies, international corporations, universities, and the government to make plans to install systems in both local-area and wide-area networks. The device self-integrates easily into existing Gigabit Ethernet or Asynchronous Transfer Mode (ATM) networks.

The FPX itself fits within a rack-mounted chassis that can be installed in any network closet. When a virus or worm is detected, the system can either silently drop the malicious traffic or generate a pop-up message on an end-user’s computer. An administrator uses a simple, web-based interface to control and configure the system.

Tony Fitzpatrick | WUSTL
Further information:
http://news-info.wustl.edu/tips/page/normal/477.html
http://www.arl.wustl.edu/~lockwood/publications/MAPLD_2003_e10_lockwood_p.pdf

More articles from Information Technology:

nachricht Putting food-safety detection in the hands of consumers
15.11.2018 | Massachusetts Institute of Technology

nachricht Next stop Morocco: EU partners test innovative space robotics technologies in the Sahara desert
09.11.2018 | Deutsches Forschungszentrum für Künstliche Intelligenz GmbH, DFKI

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: UNH scientists help provide first-ever views of elusive energy explosion

Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.

Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...

Im Focus: A Chip with Blood Vessels

Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.

Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...

Im Focus: A Leap Into Quantum Technology

Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.

In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...

Im Focus: Research icebreaker Polarstern begins the Antarctic season

What does it look like below the ice shelf of the calved massive iceberg A68?

On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.

Im Focus: Penn engineers develop ultrathin, ultralight 'nanocardboard'

When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure

Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

“3rd Conference on Laser Polishing – LaP 2018” Attracts International Experts and Users

09.11.2018 | Event News

On the brain’s ability to find the right direction

06.11.2018 | Event News

European Space Talks: Weltraumschrott – eine Gefahr für die Gesellschaft?

23.10.2018 | Event News

 
Latest News

Purdue cancer identity technology makes it easier to find a tumor's 'address'

16.11.2018 | Health and Medicine

Good preparation is half the digestion

16.11.2018 | Life Sciences

Microscope measures muscle weakness

16.11.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>