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CONFIGURING TRUSTS – PART 4

http://www.rebeladmin.com/2015/02/configuring-trusts-part-4/ This is the last part of the series which explain about “Trusts” between infrastructures. If you not checked the other 3 parts yet you can find them in here. Configuring Trusts – Part 1 Configuring Trusts – Part 2 Configuring Trusts – Part 3 This article will explain how to configure trusts between infrastructures. Demo Setup For the demonstration I will be using following setup. Organization Domain Primary DC Contoso Ltd. Contoso.com Microsoft Windows Server 2012 R2 XYZ Ltd. Xyz.com Microsoft Windows Server 2012 R2 I am going to initiate a “Forest Trust” between the 2 organizations. It will be Two-Way trust which allows each forest, domains and users to access “allowed” resources in each organization infrastructure. Before start the process the initial step is to make sure following ports are open in firewalls in both organizations to initiate the trusts. UDP Port 88 – Kerbero...

CONFIGURING TRUSTS – PART 3

http://www.rebeladmin.com/2015/01/configuring-trusts-part-3/ This is the part 3 of the series which explain about “Trusts” between infrastructures. If you not checked the other 2 parts yet you can find them in here. Configuring Trusts – Part 1 Configuring Trusts – Part 2 In this article I will cover up the rest of the concepts, terms, involves with setting up a trust. Security Identifier (SID) filtering Microsoft Systems uses a structure known as SID to express its identities. Its act as a token. SID filtering is used to block users in trusted forest or domain being able to elevate their privileges in local forest or domain. This is important for external trusts as when you trusting you can control rights to provide credentials between domains. By default windows 2012, windows 2012 R2 have SID filtering enabled. If you wish to disable this, you can do it using following commands. ( https://technet.microsoft.com/en-us/library/cc794801(v=ws.10).aspx ) To disable SID filte...

CONFIGURING TRUSTS – PART 2

http://www.rebeladmin.com/2015/01/configuring-trusts-part-2/ This is the part 2 of the series of articles which describes about trusts between infrastructures. If you still not read the part 1 of the series you can find it in  here . On previous article I explain what is a trust and common terms used in process. This article will be extend to it. External Trusts  – Let’s assume we have child domain called “ HQ.contoso.com ” under contoso.com forest. Company recently had business relationship with XYZ corp. They having child domain under the XYZ.com forest called “ Sales.xyz.com ”. As per business need management wants to allow users, resources in “Sales.xyz.com” to access data, resources in “HQ.contoso.com”. None of the other domains, child domains in both forest should allow in this operation. This is where we can use “External Trusts”. So it will only allow part of the forest to participate in unique operation. Realm Trust  – Also in real world Microsoft AD ser...

CONFIGURING TRUSTS – PART 1

http://www.rebeladmin.com/2015/01/configuring-trusts-part-1/ Trusts, simply we can define as a bond between multiple domains, multiple forests. It controls how or what been allowed between domains and forests. Let’s assume we have a company called  Contoso Inc.  and its running with domain  contoso.com . Company recently merge with another company called  XYZ Inc.  and its running with domain xyz.com . Management wants to allow their resources to been used by both company users. For ex- A user in  contoso.com  will required to access a share in  xyz.com  file server. Company wants to do it with minimum impact or changes. This is where “trusts” comes in to the picture. Using trusts we can control who will be trusted, how it will be and what sort of access users have on resources. Before we move in to the configurations it is important to understand the concepts of trusts. Trusting Domain  – This will be the domain contains the re...

Embedding IAM roles in EC2 instances

http://searchaws.techtarget.com/tip/Embedding-IAM-roles-in-EC2-instances Many enterprises know that turning off unused AWS instances can save money. But not all IT pros know which method is best and how to set it up. There are a few ways to turn off unused Amazon Web Services (AWS) Elastic Compute Cloud (EC2) instances. If you don't use Auto Scaling, you will need to configure this process manually. One method is to use command-line interface (CLI) tools ec2-start-instances and ec2-stop-instances on Linux, using either a role-based method or an identity access management user-credential method. Setting up role-based security enables you to associate AWS identity and access management (IAM) roles with the instance, without having to manually add plain-text security credentials. This not only improves security, but is easier to manage. Identify an instance that will perform CLI start and stop scripts, or create a dedicated micro-instance to perform these maintenance tasks. IA...