Category Archives: Uncategorized

BGP Additional Paths

BGP routers only advertise the best path to their neighbors. When a better path is found, it replaces the current path. Advertising a path and replacing it with a new path is called an implicit withdraw. Since we only advertise the best path, a lot of other possible paths are unknown to some of the… Read More »

VPN Ports

  PPTP:To allow PPTP tunnel maintenance traffic, open TCP 1723.To allow PPTP tunneled data to pass through router, open Protocol ID 47. L2TP over IPSecTo allow Internet Key Exchange (IKE), open UDP 500.To allow IPSec Network Address Translation (NAT-T) open UDP 4500.To allow L2TP traffic, open UDP 1701. OpenVPN: OpenVPN uses port 1194 udp and… Read More »

Installing Guacamole on Raspberry Pi

Guacamole is a clientless remote desktop gateway. After successful implementation of this system on some PCs, now I want to use this on a Raspberry Pi 3 B+. Following is how I do the installation on Raspbian system. OS Version: Raspbian GNU/Linux 9 (stretch) Upgrade the system: $ sudo apt-get update $ sudo apt-get upgrade… Read More »

Odroid HC2 Heat Issue

The infamous heat issue with the Odroid HC2 is here. My simple solution is simply by plugging in cheap USB fan to the bottom of the case (I put my HC2 vertically for better heat dissipation). Below is the result. And for the sake of comparison, here’s the CPU thermal reading for my RPi2 with… Read More »

TP-Link Smart Plug Monitoring

I found a great web based monitoring tools for this smart plug, and I will share my method running this tools in Raspberry Pi (with DietPi). Read more about this tool here: https://github.com/jamesbarnett91/tplink-energy-monitor There are few method to run this, but I found that using Node+NPM is the easiest for this platform. apt install git… Read More »