Launch and Access Amazon AWS EC2 Instances
Amazon Web Services (AWS) is a secure cloud services platform, offering compute power, database storage, content delivery and other functionality to help businesses scale and grow. Millions of users are…
Creat AWS Diagrams Online
I was looking for some online tools to create impressive AWS diagram for my learning process. Most of online diagram websites provide certain free usages. Here are some websites I…
Building a 3S (Scalable, Stable and Secure) AWS Test Environment – Part 1
Gartner’s Magic Quadrant for Cloud Infrastructure as a Service, Worldwide June 2017. According to Gartner, Amazon Web Services (AWS) has became as the undisputed leading cloud provider in the world.…
Cisco Router IKEv2 IPSec VPN Configuration
What is Differences between IKEv1 and IKE v2? 1. Different negotiation processes − IKEv1 IKEv1 SA negotiation consists of two phases. IKEv1 phase 1 negotiation aims to establish the IKE…
Juniper Space Security Director Policy Hit Counts Not Updated Automatically
Issue Symptons: Normally, each firewall rule on the SRX auto-updates a snmp counter for hit-count, regardless of whether ‘count’ is configured or not. Juniper Space Security Director periodically polls these…
Troubleshooting Cisco IPSec Site to Site VPN – “QM Rejected”
There was a VPN issue to troubleshoot recently. It was between Juniper SRX and Cisco Router. It seems straightforward but it took quite a long time to troubleshoot because of…
Cisco Wireless Controller 5508 Configuration – Tips and Tricks
All basic configuration has been created from following related posts. This post will focus on some other configuration or troubleshooting happened in real environment. Relate Posts: Cisco Wireless Controller 5508…
Gartner Magic Quadrant for Network Performance Monitoring and Diagnostics (2017, 2016, 2015, 2014 )
According to Gartner, Network performance monitoring and diagnostics (NPMD) enable network professionals to understand the impact of network behavior on application and infrastructure performance, and conversely, via network instrumentation. Other…
Gartner Magic Quadrant for Data Center Infrastructure Management (DCIM) (2016, 2015,2014)
Data center infrastructure management (DCIM) tools monitor, measure, manage and/or control data center resources and energy consumption of both IT-related equipment (such as servers, storage and network switches) and facilities…
Cisco Wireless LAN Controller Redundancy Solutions: High Availability
There are two options for Cisco Wireless Controller redundancy solutions, either Backup Controllers or High Availability, depending on the firmware version of WLC’s, failover time requirement, and budget. Using Backup…
Cisco Wireless Controller 5508 Configuration Step by Step – Part 1 (CLI and GUI Access, Upgrade)
As the industry’s most deployed controller, the Cisco 5500 Series Wireless Controller provides the highest performance, security, and scalability to support business communications today and in the future. Cisco 5500…
Using Artica Squid Open Source Project to Build Powerful and Safe but Simple to Use Proxy
Looking for a pre-installed GUI based Proxy for a while and found Artica recently. The feature is pretty attractive and GUI interface looks cool. What is Artica? “Artica Proxy is…