Automate HP Procurve Client Public-Key SSH Authentication Setup

This is a simple SSH public key management utility for HP Procurve switches that is a prerequisite to the automated backup script that is coming soon.  It first removes any existing keys, enables the TFTP client on the switch and then downloads and installs new public keys.  *Please be aware that there isn’t very much… Continue reading Automate HP Procurve Client Public-Key SSH Authentication Setup

Python Scripting for HP Procurve Switches

I’ve working for the last several months on setting up a disaster recovery site, part of which required scripting network changes to streamline the process of making the site hot when necessary.  I wanted to connect from the scripting server to my networking devices via SSH for security purposes and I didn’t want to necessarily… Continue reading Python Scripting for HP Procurve Switches

Hacking voicemail: Warning, it’s scary simple.

Disclaimer: I do not under any circumstance condone hacking/phreaking or any other illegal activities.  This is an extremely simple proof of concept attack that should raise your awareness about the lack of security in voicemail networks and why you should never leave confidential information on any voicemail system. Stealing voicemail is much easier simpler than… Continue reading Hacking voicemail: Warning, it’s scary simple.

Cloudflare now offers free SSL support

The good people over at Cloudflare are at it again.  Starting today, Cloudflare is offering free SSL support on all plans.  As soon as the certificate is generated for joshuamarvel.com, I’ll be flipping the switch over to full HTTPS support for this site.  Pop over to Cloudflare’s blog for the full write up.   For… Continue reading Cloudflare now offers free SSL support

Convergence Factors – Why I’m not sold on Hyperconvergence, yet.

Tech buzzword alert 2014, Hyperconvergence has hit the mainstream and is coming to a datacenter near you… If you’ve spent anytime this year in the compute space or have talked to vendors about purchasing equipment then there is no doubt that you’ve been exposed to the concept of hyperconvergence.  Besides having the most corporate-appealing marketing name of… Continue reading Convergence Factors – Why I’m not sold on Hyperconvergence, yet.

IT, the aging workforce, and future generations.

I work for a somewhat unique company in that the average tenure is over 18 years.  This has been and continues to be incredibly valuable to my company; training costs, HR costs, and customer relationships are all better off.  It also poses a huge looming issue that is facing many companies, the retirement of the… Continue reading IT, the aging workforce, and future generations.

vCenter Server Appliance hangs after toggling certificate setting

I deployed a new vCSA in my environment (moving from Windows-based to the appliance) and needed to change the hostname post-migration.  Changing the hostname required a reboot, but afterwards I couldn’t authenticate to the web GUI due to a certificate error.  In the admin portal, I pressed the “Toggle Certificate Setting” button and rebooted the vCSA… Continue reading vCenter Server Appliance hangs after toggling certificate setting

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Categorised as VMware

Computer science, Information technology and why I probably can’t help you.

First, I want to be perfectly clear that this is not a diatribe directed towards anyone, or even a diatribe at all. It is an explanation, with the hope that it will help more “users” (for the lack of a better term) understand why “computer” people (again, for the lack of a better term) can… Continue reading Computer science, Information technology and why I probably can’t help you.

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Categorised as Sysadmin