[root@rhce-ryanrudolf]# rm -rf / 2> /dev/null

things I break/fix for fun and learning

Apr 19, 2018 - 2 minute read - Comments - linux

Adblocking at the DNS Level

I have 2 wonderful kids who are at the age of curiosity and exploration with access to Internet using their own tablets (for school reading / games / research) and soon with a laptop / desktop. I need to protect them from the darkside of the Internet – gambling, fake news, porn, malware, inappropriate advertisements, etc etc.

One solution is to use adblocker on each endpoint device that connects to the Internet. This is OK, but has several downsides. Mainly this needs admin rights for it to work properly (root access on tablets / phones which I don’t have). Another downside is you have to configure this on each endpoint device, which can be overwhelming and time consuming.

Apr 16, 2018 - 1 minute read - Comments

Bottleneck in my HomeLab

I recently rebuilt my plex media server inside a VM. I was transferring several media files and noticed that the throughput peaks at 10MB/s and averages to about 7.6MB/s.

The source computer is older and only have 10/100Mb/s network interface while the destination computer is my ESXi server that has a 1Gb/s network interface. Both are connected by D-LINK DIR-615 which also maxes at 100Mb/s.

Apr 15, 2018 - 4 minute read - Comments

NIC Bonding / Teaming in RHEL7

NIC bonding / teaming allows for redundancy and resiliency in server systems. If one of the NIC (network interface card) fails, the server still have network connectivity.

Configuring this in RHEL is pretty straightforward. There are several ways to configure this, and I am familiar doing this in the command line using nmcli.

Apr 9, 2018 - 2 minute read - Comments

Using SSH Tunnel to Access vCenter Server

I need to access my Vcenter Server remotely as from time to time I practice on my homelab even if I am not at home. The easiest method I did before was punching holes in my firewall by port forwarding. I know this is not the most secure and practical way, but the concepts are easy enough for me to understand.

Apr 6, 2018 - 1 minute read - Comments - android linux

Accessing Files in Android Phones using Linux

From time to time I need to plug-in my Android phone to my computer to be able to transfer files. But since my laptop is running a Linux operating system (Fedora to be exact), there is no easy point-and-click way like in Windows operating systems. Usually what I do is boot into my Windows partition or launch a Windows virtual machine. It’s not ideal, but it works.