Configure an Active/Standby pair BIG-IP F5 Load Balancer in VMware Workstation (12.1.4-0.0.8)

I finally found some time to Deploy and Configure an F5 Load Balancer in my VMware Workstation LAB. The below steps will walk you through setting up an Active/Standby pair HA configuration for BIG-IP F5 LTM 12.1.4-0.0.8. To get a … Continue re...

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Configure an Active/Standby pair Big-IP F5 Load Balancer in VMware Workstation (13.1.1-0.04)

I finally found some time to Deploy and Configure an F5 Load Balancer in my VMware Workstation LAB. The below steps will walk you through setting up an Active/Standby pair HA configuration for BIG-IP F5 13.1.1-0.0.4. The whole set up … Continu...

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Using Scrub command to secure erase data in RedHat Linux

Sometimes you may need to secure wipe information in Linux like disk, partition a file, there are other built in tools to do it in Linux but the below tool looks like lie the below tool covers the most standards. … Continue reading →...

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Text editor to open really large text files

I was troubleshooting an application and needed to take a look at a really large log file. The log file was 1.2GB in size and while I could open it up with Wordpad scrolling down was lagging too much. I … Continue reading →...

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Photo app to batch resize images

Every once in a while I have a need to resize a bunch of images and while there are many programs to do it the below is my favorite utility. It always takes me a while to find it through … Continue reading →...

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Analyzing Storage Performance issues with PerfMon

Perfmon is a built in Windows utility that measures performance, it has been introduced in Windows 3.1 and has shipped with every version of Windows ever since. I think every admin should become a little bit more familiar with it … Continue re...

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Batch script to capture the IP of a rotating DNS record

Here is a script I wrote to capture a rotating IP address of a DNS A record. This is usually pretty common with Akamai or Cloudflare DNS servers where an IP for a DNS record will change randomly for security, … Continue reading →...

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Secure wipe a disk in Linux with DD command

Here is a quick example how to secure erase a disk or a partition with the Linux DD command. In the example I am using an input file of /dev/urandom instead of /dev/random as it’s quicker to generate random data … Continue reading →...

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Create an ext4 File System in RedHat Linux

To create a an ext3 or ext4 file system in Linux there are a few steps involved. The below is a step by step guide how to create, format and mount an ext 4 disk in Linux. Create an ext4 … Continue reading →...

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