Canary Token
· ☕ 3 min read · ✍️ Brett Johnson
On the 28th of Jan, I got a notification on my phone that episode 396 of the Risky Business podcast was ready to be streamed for my drive home commute. The sponsored interview with Haroon Meer on a free service called Canary Tokens from Thinkst really got my attention. It was said that Canary Tokens were simple to implement service to produce an alert when activated, they could be placed into directory structures, DNS lookup, Word documents etc.

vBrownBag APAC Admin Utility Series
· ☕ 1 min read · ✍️ Brett Johnson
vBrownBag APAC is currently setting up a new series of podcasts for 2016, starting on the 10th of March. The podcasts will be live streamed and recorded at 9 PM NZDST and uploaded to YouTube after the show. We are looking for Admins who would like to present a podcast on a utility that they find invaluable to their day to day operations. The premise to not only demonstrate the features and functionality of the product, but to also explain the organisational use case that it fulfills.

vBrownBag ACI Series
· ☕ 2 min read · ✍️ Brett Johnson
Recently vBrownBag kicked off the APAC podcast with a 4 part series on Cisco’;s SDN solution ACI. Before getting into the details of the show I would like to thank our presenters, Lauren Malhoit @malhoit{.ProfileHeaderCard-screennameLink.u-linkComplex.js-nav} and Carl Niger @carl_niger{.ProfileHeaderCard-screennameLink.u-linkComplex.js-nav} for taking the time to put together some fantastic content and presenting at a local time when most of us would be asleep. The series provided excellent product information on Cisco’;s SDN solution as well a great a technical overview of the components and some of its capabilities.

EIGRP RTP
· ☕ 2 min read · ✍️ Brett Johnson
After reading over RTP this morning I decided to run up a very simple EIGRP setup in GNS3 to help visualise what is happening. ![Wireshark]({{ “/assets/images/2015/09/EIRGP-Topology.png” | absolute_url }}) As the image above shows the setup is very straight forward. The link from R4 to R3 was set to 100mbps and R4 to R2 was set to 10mbps. This was simply to adjust the metric and move traffic over to one link and make picking the right link for tracking RTP easier.

Layer 2 Frame changes through at each hop
· ☕ 3 min read · ✍️ Brett Johnson
I enjoy building test environments to help cement the concepts I read about. In this case it’;s the changes to the source and destination MAC addresses of a frame at layer 2 while it passes through each hop on the way to the final destination. To watch this process I setup wireshark between each hop. The topology was very simple, 2 hosts and 2 routers. ![Topology]({{ “/assets/images/2015/08/Topology.png” | absolute_url }})

CCNA Home LAB
· ☕ 3 min read · ✍️ Brett Johnson
During my study for my VCP5-DCV certification I found that having a home lab was a huge asset in terms of being able to get a better understanding of the subject matter. Now that I am working towards my CCNA Routing and Switch I feel this will be the case once again. My goal is use the home lab to work on labs as per the study guides I am using and also to have something productive to work on when I don’;t feel like reading through a study guide.

Default to PowerShell in Windows Core
· ☕ 1 min read · ✍️ Brett Johnson
One of the big pushes in Server 2012 is the use a Server Core installation instead of the full GUI install. Microsoft have put a lot of effort into encouraging administrators to use PowerShell as a core tool for day to day administration of servers, which is why is seems a bit strange that a Server Core installation boots to a traditional command prompt instead of a PowerShell prompt. To change your Server Core installation to launch PowerShell instead of the normal Command Prompt is a simple registry change.

Initial Setup of SSO
· ☕ 2 min read · ✍️ Brett Johnson
SSO is an integral part of providing access rights to your Vcentre server. You can assign permissions to people based on their user account, group memberships and link it with various authentication methods. After installing Vcentre for the first time log onto the Web Client with the username administrator@vsphere.local and the password you used during the install. The address for the Web Client will be https://Server Name:9443/web-client Though if you selected a different port to 9443 during the installation then use that.

Server 2012 PSOD With E1000 NIC
· ☕ 1 min read · ✍️ Brett Johnson
While testing out a Server 2012 install on ESXi 5.5 I noticed that when copying files between it and any other server I would get a PSOD. The main section of the PSOD that got my attention was E1000PollRxRring@vmkernel After a bit of searching around I found that there seems to be a common issue with Server 2012 and Server 2012 R2 using the E1000 NIC. Standard solution seems to be remove your current E1000 NIC from the guest machine and add a NIC running as VMXNET3.