Cisco IOS Internet Key Exchange version 1 (IKEv1) Vulnerability and Fix
Cisco IKEv1 is still popular in VPN configuration. Most of my vpn configuration is based on IKE v1 although there are more demands for v2. I had a post “Cisco…
Cisco 3850 Mgmt VRF Configuration
Ethernet Management Interface VRF New Cisco Routers and Switches come with a dedicated Ethernet port which unique purpose is to provide management access to the device via SSH or Telnet.…
Juniper SRX Commnit Error “No rulebase configured for active policy”
I have been dealing with Juniper SRX IDP error many times when NSM was been used. Mostly those errors are caused by corrupted signature DB or not enough storage space…
Upgrade Cisco 4500 Switches IOS and ROMM and Failed to Enable VSS (Virtual Switching System)
In one of my clients environment, there are two Cisco 4510 running and HSRP has been configured. It has been discussed to upgrade it to VSS (Virtual Switching System) during…
Cisco Catalyst 3850 Data Stack and Power Stack
Received a bunch of boxes for Cisco 3850, which will be used to build a switch stack for high availability switching environment. For 2960 series, there is previous post about…
Juniper SRX DB mode (Debug mode)
During our regular maintenance, after rebooted one SRX345, and found it stuck at db mode, which is debug mode. After a short and quick analysis, I found Juniper JunOS devices…
Cisco Catalyst 2960X and 2960S Stacking
Working on stacking two Cisco 2060X switches recently, and two 2960X Stack module and 0.5m stacking cables received today. Product name is C2960X-STACK= and description is Catalyst 2960-X FlexStack Plus…
WAMP and WordPress Install on AWS Free Tier Windows 2012 R2
AWS provides a 750 hours free tier on Windows machine. I am always wondering how to install wordpress on it to use this free tier instance . Here is all…
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.…