Starting from a base CentOS system with nothing configured, and referencing the CentOS wiki, here is how I like to set up a headless virtualbox environment: Disable selinux. It’s overly cumbersome and is enabled by default in CentOS. I like to permanently disable it even though the default is permissive. I ride the edge, I know.``` vi /etc/selinux/config and change SELINUX=enabled to SELINUX=disabled Then reboot. Using the methodology I originally found found [here](http://stackoverflow.

[Oliver Gorwits]( “oliver@cpan.org”) - Jan 4, 2013 I wrote a utility to intelligently diff IOS style config which might be interesting: https://metacpan.org/module/iosdiff Jones sabo regular those tend to consider the necklaces it d - Apr 1, 2013 I was looking through some of your content on this site and I believe this website is really informative! Keep posting.

If you are running a network and aren’t using RANCID, you should give it a serious look. RANCID is a cross platform configuration management toolkit for backing up router configurations and certain environmental and hardware information into version control. It’s been around for as long as I can remember and supports nearly every platform I can think of, including a few modules that I cobbled together myself. There is are a few nice web based front ends for CVS and SVN, I prefer to use ViewVC because I have a lot of experience with it, however, there may be cases where a web server isn’t a good option, unavailable or just too much work.

There has been a lot of buzz about the service provider model, net neutrality and tiered access for consumers in the past few years. Just this week Google has been accused of paying Orange (more likely Orange is forcing google) for handling its traffic. This is a VERY slippery slope that teeters on the edge of what we all want to avoid as consumers or content creators. This recent story has sparked something I’ve been thinking about for a very long time.

I’ve been lamenting about the SDN WAN options for a while now. Having SDN/OpenFlow in a data center or campus is relatively well documented and already widely deployed. Google has been doing SDN across their private WAN in production. These pieces are easy. What isn’t easy is the ability to plumb SDN across many domains that are under disparate control. This part is hard. What is lacking is a fundamental framework, or set of primitives to build from.

Ben - Jan 2, 2013 //One of your args slipped down a line. pkgutil –expand /Volumes/AirPortUtility/AirPortUtility56.pkg ~/Desktop/AirPortTemp cd ~/Desktop/AirPortTemp~/Desktop/AirPortTemp/AirPortUtility56Lion.pkg/ open Payload cd “Payload 2 2/Applications/Utilities/” open .

I have a bunch of Apple wireless gear at my house. It’s inexpensive, feature rich and easy to maintain. However, with the update to mountain lion a while ago, the ability to install the older Airport Utility stopped. This is annoying since I have what apple now considers “advanced” features like IPv6 at my home and essentially all my gear here is a lab (except for the plex server =) I’ve been spending a lot of time on cacti lately, and I wanted to test out the syslog plugin….

It’s always annoying to me, being a convert from *BSD to Linux, that tools lke dig and host aren’t in the minimal base install. I realise that this makes me somewhat of a hypocrite, as I prefer an additive system rather than a subtractive base OS. Nevertheless, I’m continually surprised that “host” isn’t available after installing a minimal CentOS system without adding an additional package. So, since I always forget, here is a quick blog post to remind me and any other converts how to install those tools:``` yum -y install bind-utils

How to install and use the Airport utility under Mountain Lion - Jan 3, 2013 […] HomeNet […]

Maybe It’s a bit overkill, but I used my home network as an exercise for building a Network Weathermap for another consulting gig I had. It continues to run. Why? Because it can =)