Networking

Java Update 13 breaks Cisco SDM 2.5

By Howard | Published April 22nd, 2009

Another post in a series designed to help Future-Howard work out why things have broken.
If you install Java 6 Update 13 and then try and log into Cisco SDM 2.5 it will fail. The SDM console will not load.
I found I had to go back to Java 6 Update 6 (available at the Java…

VMRC Graphic Corruption

By Howard | Published January 30th, 2008

I’m looking for help here. 
The image (click to embiggen) you see here is a screen capture of one of my virtual machines suffering some form of graphic corruption.  It should look like this.  This happens often enough now that it is seriously irritating.  I can make it go away by closing VMRC and…

Graphing Counter-Strike Source FPS/Users in MRTG on Windows

By Howard | Published December 4th, 2007

In my last post, you discovered my obsession for generating statistics on my network usage and my use of MRTG to draw pretty little graphs. Writing that post got me thinking about my Counter-Strike server, and what data I could usefully graph from it. A bit of Googling led me to this page…

Traffic Graphing

By Howard | Published December 3rd, 2007

The image on the left is just one of the graphs generated automatically for tracking the data usage on my home network.
That particular graph shows the usage of my ADSL connection over time; green is downloaded data, while the blue line shows my uploads. It is generated by Tobi Oetiker’s outstanding MRTG – The…

Clearing a Cisco Router's Dynamic NAT Table

By Howard | Published December 1st, 2007

I keep needing to do this – so once again to help my future self:
When you have a number of public IPs being translated through a router to an internal address space, a router’s dynamic translation can get full. I’ve got an 877W, and it seems that a combination of running BitTorrent and a…

Nooo! Infrant ReadyNAS NV Death

By Howard | Published June 27th, 2007

Noooo! One of my ReadyNAS devices died today. Based on the “hot component” smell and the fact that nothing lights up I’m hoping that it’s just the PSU/mainboard that fried, and that all my disks with their lovely XRAIDed data are intact.
I’ve sent a trouble ticket to support, but since they’re now owned…

How to enable remote access to MSDE

By Howard | Published March 14th, 2007

I’m experimenting with Windows XP Embedded at the moment and the development studio it installs relies on the MSDE (assuming you don’t already have a SQL Server). I’d set it up so the MSDE based component database was on a virtual machine, and was running the Target Designer on my local “real” machine. …

m0n0wall and MS Virtual Server

By Howard | Published March 4th, 2006

We recently had the need to simulate a routed environment with low bandwidth/high latency links between remote sites.  To achieve this I used m0n0wall – a free software router – running inside Microsoft Virtual Server on multiple virtual NICs.  Here’s how to get it up and running…

Things I Have Learned This Week

By Howard | Published February 17th, 2006

Thing the first:
Microsoft Virtual Server 2005 does not support teamed NICs on the host.
This bit us on the arse earlier this week when we teamed the NICs on the hosts of our virtual environment. As a result, although we could RDP to the host desktop, all our guest machines dropped off the network. …

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