RUNAS Command – Run control panel tasks with administrative rights

What is RUNAS? RUNAS command allows administrators to run a command, or an application under a different account’s privilege. Usually, the RUNAS command is used when a network operator or administrator need to do some admin tasks on a machine while an end user is logged in. The quickest way to do an admin task is to...

Welcome to Plain Tutorials

Welcome to Plain Tutorials, a personal blog, where I could share some of my experience with the readers, as well as could learn from your feedbacks. The overall ideas of this blog firstly is to provide the readers free computer courses (MCITP Server Administrator, MCITP Enterprise Administrator, CCNA, Linux+, and Security+). Free courses mean free of...

Ignore security checking for certain IP in MDaemon

If you’re using MDaemon Mail Server, and you would like to receive mails from some vendors that using machine generated email addresses, and these addresses are not valid email addresses, then follow this tutorial to skip security checking routines for those vendors. But, what is an invalid email address? An invalid email address with MDaemon is any...

ERR_NAME_RESOLUTION_FAILED message

Today, one of my Windows 7 PC shown the error message, “ERR_NAME_RESOLUTION_FAILED“, when I enter any website using Internet Explorer, Firefox, and Google Chrome. The full error message is  Error 137 (net::ERR_NAME_RESOLUTION_FAILED): Unknown The webpage at might be temporarily down or it may have moved permanently to a new web address I thought it’s caused by DNS Changing...

Policy-based Routing in Cisco Routers

As I said in my previous article, Policy-based Routing on Fortigate Firewall, I now publish this article about policy-based routing on Cisco routers. Normally, routing is based on destination network/host to route the traffic to next-hop router. In some cases, you will need to define a smaller set of rules, such as traffic originated from certain...

C# – Call methods by String names – a simple .net script parser

.Net library System.Reflection allows you to call any methods by its name as string. You can apply this method when you want to parse texts from a script file, such as GiveMeValue(100). “GiveMeValue(100)” is a string, and you want to call a real GiveMeValue(int input) method inside your code. With the help of System.Reflection, you...

Force a remote machine to join domain

To join a machine to a domain, you could do it manually by logging on that local machine using local administrator account, and join it to a domain. Or, you can force it to join a domain remotely from your workstation, using NETDOM utility. There are three requirements that must be satisfied before using this method Remote...

Install vCenter Server 4.1 on Windows Server 2003

To efficiently manage VMWare vSphere hosts, you need to purchase and install VMWare vCenter Server 4.1. With vCenter Server, you can manage vSphere hosts at an enterprise level, such as implementing HA cluster, VMotion, Data Motion, or anything that an ideal VMWare cluster must have. In another words, VMWare vCenter Server is the central management...