This is a clarification of the information posted in the previous post – Problems with ResNet at Woodland Court & Deans Court dealing specifically with the situation at Deans Court.
Over the last few days, it would appear that there have been several short outages affecting a large number of people living in Deans Court. We are actively investigating the problem, and it’s not a simple one!
The outages tend to last a couple of minutes, and there is no discernible pattern to them. They are spread over several network devices and affect several flats in different parts of the building. They don’t seem to effect all people at the same time but are more random in nature.
We think we’ve tracked it down to some faulty software on two student computers at Deans Court, which is disrupting Internet access for the other residents by grabbing additional IP addresses. We are contacting these two students and have isolated their computers on the network.
However, at this stage we can’t be certain that we’ve identified all of the machines responsible – we will update this blog post with more details as we learn more about the situation.
Update – 2008-06-02 14:11
We have identified a few more computers which are causing problems and have removed them from the network, the situation should be a little better now, but we’re not out of the woods yet. We are continuing to work on the problem and will update this post when we have more information.
Update – 2008-06-03 09:51
We’ve identified another couple of computers which are causing problems and have removed them from the network. At this stage, we think it’s an virus outbreak. It looks like something pretty new as none of the virus scanners we’ve tried are picking it up – we’re working hard to identify how it spreads and attempting to isolate a sample that we can submit to McAfee for analysis.
How can you protect yourself?
Our best advice at the moment is to ensure your computer is up to date with windows patches, antivirus and that you’re running the latest versions of common software. As ever, be cautious on the internet, and don’t click on any links in emails or instant messenger sessions that you weren’t expecting.
Update – 2008-06-03 – 16:46
The latest on this is that we’ve identified and disconnected 9 computers so far. We have been in touch with those who own the computers concerned and are working with them to clean the computers up before we allow them back on the network.
As far as we know, the network at Deans Court is now stable (if you know different, please let us know!) – although we are monitoring the situation and disconnecting computers as and when we spot them.
Update – 2008-06-20 – 15:22
It’s back.Â The problems appear to have started slightly before 15:00 today, we were notified via a call to the helpdesk and within 15 minutes had identified the machine that was causing problems.Â We have disconnected that machine and are in the process of contacting the customer concerned.
Unfortunately, the weekend is approaching and we’re unable to be quite as responsive as we would be during the week – although we will do our best to keep an eye on it.