upptime: a GitHub-based free opensource website monitoring project
This post introduces UPPTIME this Github project which is an open source site monitoring tool completely based on Github.
GNS3 – Create GRE Tunnel Lab Using 3640 IOS
This post is a quick sum up how to get GNS3 VM running in your VMWare environment. A basic GRE tunnel lab has been created for demonstrating the configuration. Download…
Install OpenWRT as Single-Arm Router Without Changing Your Home Network
My home network is a flat network, one ISP Wireless Router connecting to a modem for Internet connection. Internally, a switch is connecting to this wireless router to provide more…
Visible Route Tracing Tools
TraceRoute / tracert commands can give you each hop from your machine to remote machine by ip/dns name. It will be more interesting if it can put on a graphical…
IPv6-only Machine access to and from IPv4 World
IPv6 Only VPS Server is VPS Server without IPv4 address assigned. This kind of server has only IPv6 addresses assigned. To connect to this VPS you need to use pure…
Configure OpenWRT Allow All Traffic (Routing All Traffic with Stateful Firewall)
The OpenWrt Project is a Linux operating system targeting embedded devices. Instead of trying to create a single, static firmware, OpenWrt provides a fully writable filesystem with package management. This…
Ansible Tutorial – Install Ansible and Run Simple Command Remotely
Ansible is a radically simple IT automation engine that automates cloud provisioning, configuration management, application deployment, intra-service orchestration, and many other IT needs. The good thing about Ansible is that…
Deploy Zabbix Agent into CentOS and Add into Zabbix Server
Zabbix Agent is required to install on all remote systems needs to be monitor through Zabbix server. The Zabbix Agent collects resource utilization data and applications data on the client…
Adding Windows Host into Zabbix (Active Check Mode)
1. Download Zabbix Agent Make sure you are using same version as your Zabbix server. https://www.zabbix.com/download_agents I am using Zabbix 4.0 LTS, so here is my download link for Windows…
Quickly Deploy Zabbix in CentOS7
Zabbix is a mature and effortless enterprise-class open source monitoring solution for network monitoring and application monitoring of millions of metrics. This post is going to install zabbix4.0 into a brand new Centos7.x system environment,…
Understanding Ping Command
The ping command operates by sending Internet Control Message Protocol (ICMP) Echo Request messages to the destination computer and waiting for a response. How many of those responses are returned,…
Gartner Magic Quadrant for the Wired and Wireless LAN Access Infrastructure (2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010)
Gartner’s Magic Quadrant for Wireless LAN Infrastructure has been released for a couple of years. This post listed all reports found from Internet since 2010. If you are not familiar…
