Archive for the 'Networking' Category


Mac/Linux/Windows usb wireless adapter D-link DWL-G122

Monday, January 8th, 2007

One of the tools I looked at having for my expanding kit has been a usb wireless adapter that would work with minimal install on Windows/Mac or Linux. As you can imagine…. it’s not as straightforward as just getting one that’s compatible with Windows…. well, after much searching I found the D-Link DWL-G122 802.11g Wireless […]

Is something up with ordb.org?

Monday, December 11th, 2006

I’ve noticed several times in the last week a server of mine that is using postfix has rejected messages due to a failure in the lookup at relays.ordb.org. At first, I thought this was just a false positive in the database at ordb… but this morning I finally “caught it” while it was happening and […]

Good idea to help limit phishing attacks

Thursday, November 9th, 2006

I saw this a few weeks back and think it’s a good idea. Essentially why don’t we have a .bank domain registration and limit it to just financial institutions the way .gov is limited to government registrations. (and .mil for military, .edu for educational institutions…..) Let’s face it, anyone can register a .com .net or […]

Network swiss army knife

Thursday, November 9th, 2006

There’s no better way to say it, netcat is SOO useful, and there is an encrypted variation… cryptcat, you can do quite a few interesting and useful things VERY easily with these two utilities. (*It’s one of the utilities I used to image a live running system to a file on a network server.) The […]

Vmware Server web interface tricks…

Sunday, November 5th, 2006

I haven’t been overwhelmed with VMware server’s web interface. You can start a virtual machine, or see statistics, but you can’t create virtual machines. Well, from the VMWare forums I did find a couple interesting “hidden” features. First, is a file manager at https://youriphere:8333/fm-properties and second is a GSX interface (which gives the ability to […]

Nxclient into xubuntu box

Sunday, November 5th, 2006

I like nx server and client, it can really make good use of low bandwidth connections to get a gui link. But, by default it’s quick and easy to setup gnome and kde login sessions within nxclient, but if you’re using xubuntu then you will need to setup a “custom” session and the command is […]

Live filesystem “capture” into a virtual disk image

Sunday, November 5th, 2006

ah… the joys of *nix utilities…. I’ve just successfully tested a “capture” of a live, running system into a virtual disk image. No, I don’t mean that I booted up with an imaging utility. I took a live, booted and logged in system and imaged the primary hard drive that it was living on, into […]

Scanning over the network, or sharing a scanner on a network

Friday, October 27th, 2006

I remember the question from long ago, we had just shared a printer across a windows network and…. wait for it…. “oh, well could I share my scanner too?” On windows the typical answer was NO, at least not unless there was a driver from the scanner manufacturer that supported it, but on linux the […]

Using DNS servers other than your ISP’s

Tuesday, October 17th, 2006

As I mentioned earlier, Bellsouth seemed to be in the midst of a big DNS meltdown when I got up this morning. I spent some time getting various bellsouth customers “worked around” the issue by setting up an alternate DNS server for them. For starters…. DNS translates addresses like google.com into numbers (like 72.14.207.99) Think […]

Major Bellsouth DNS issues

Tuesday, October 17th, 2006

This morning, I’m noticing some of the machines I monitor having big DNS problems. It seems to be Bellsouth.net’s dns servers gone sideways – none seem to respond. On one network in particular we’re having trouble getting a secondary (outside network) dns server to respond. From outside the bellsouth network things seem fine though. As […]

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