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Convert a Dynamic IP to Static

Working on a project where on some servers the DHCP assigned addresses needs to be converted to static. Since there is always more than one…I needed to script it. Here is a quick way to do it via PowerShell.

Hope this helps!

NSLookup still showing IP of demoted Domain Controller

So had an interesting issue today where a Domain Controller (DC) was demoted yet the IP of the demoted DC was still showing up when running nslookup internaldomain.local Demoted DC: MWDC04 / IP: 10.14.111.111 I had done the metadata cleanup and tried many suggestions when googling the subject. To my surprise none of the solutions I […]

12 dig Command Examples for DNS

dig can we very useful in finding out DNS related issues. To install dig for Window/ Linux/ MacOSX click here. A basic dig command – dig a domain nameIn the most basic of dig commands, you have a domain name like www.microsoft.com, and you want to find information about it, so you issue the following […]

Speed up Active Directory & DNS replication between Sites

Using the standard GUI Microsoft Management Consoles to make the change to speed up Active Directory replication is not possible. The best result of using administrator consoles will be to increase domain replication between domain controllers to 15 minutes. These large time values were instituted into Active Directory at version 1 because inter-site connections during that era of computing and networking were much lower in bandwidth with the most common being frame-relay or […]

Resolve IP Addresses from List of Host Names

If you have a list of hostnames/servers that you need IP addresses for its cumbersome to ping each server and get the ip address. PowerShell to the rescue! To do this we need a file called Server.txt with each server’s hostname on each line. I am storing the file in D:\Data\Servers.txt. Once we run the […]

Creating an Inbound Connector for Office 365 to Symantec Cloud IP ranges CIDR

To allow connections only from Symantec Cloud IPs within Office 365 – Exchange Online you will need to create an Inbound Connector that is restricted to Symantec.Cloud IPs (http://images.messagelabs.com/EmailResources/ImplementationGuides/Subnet_IP.pdf ) Note: Office 365 only allows CIDR from 24 to 32 to be entered within the sender IP scope in Send Connectors.  Table 1.1 below are […]

Mohammed Wasay

Dallas based Design Technologist & Hybrid Developer