iiNet broadband gets wormed

iiNet users will be interested to hear that recent slowdowns and site access problems were likely caused by a new virus called the Nachi Worm, aka the “W32.Welchia” virus.

W32.Welchia is a troublesome self-replicating worm which infiltrates customers’ computers and then tries to find other vulnerable computers from there.

“The infected client's machine sends out hundreds of thousands of probes as it tries to find other computers to infect. When multiplied by a large number of infected machines, the amount of excess data can cripple a network,” said Greg Bader, iiNet’s CTO.

Although the fault page for the problem has been open for a month, the negative effects of the virus were quickly stopped by iiNet technicians, according to Bader. The day after the problem was discovered on 5 October, iiNet blocked all ICMP traffic, the “channel” in which the virus broadcasts.

“Since then, the original fault – network congestion, drop outs, etc. – haven't reoccurred,” Bader said.

However, iiNet is now deploying a new feature which will home in on and block users infected with the Nachi Worm.

“Rather than blocking all ICMP traffic, we detect those users who are infected and apply an ICMP block to their connection only. This prevents them infecting other users, and prevents their traffic from congesting the network. It also lets us contact them to guide them through cleaning their systems from the virus,” said Bader.

People can avoid the worm by staying up-to-date with security patches and anti-virus software.

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Ed Dawson

PC World
Show Comments

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Ratchada Dunn

Sharp PN-40TC1 Huddle Board

The Huddle Board’s built in program; Sharp Touch Viewing software allows us to easily manipulate and edit our documents (jpegs and PDFs) all at the same time on the dashboard.

George Khoury

Sharp PN-40TC1 Huddle Board

The biggest perks for me would be that it comes with easy to use and comprehensive programs that make the collaboration process a whole lot more intuitive and organic

David Coyle

Brother PocketJet PJ-773 A4 Portable Thermal Printer

I rate the printer as a 5 out of 5 stars as it has been able to fit seamlessly into my busy and mobile lifestyle.

Kurt Hegetschweiler

Brother PocketJet PJ-773 A4 Portable Thermal Printer

It’s perfect for mobile workers. Just take it out — it’s small enough to sit anywhere — turn it on, load a sheet of paper, and start printing.

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?