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Showing posts from August, 2013

This List of DNS record types

     The Records or Information held by Primary zone, Secondary zone and Stub zone are of various types. Some of the commonly-used record types are : Alias (CNAME) :     Refers to domain name aliases, that is , creating an alternate record or DNS name for the name already specified as another type in a particular zone. It is normally found with computers on the Internet perform multiple tasks, such as Web server and Chat server. Under such a situation, the CNAME records may be used to specify multiple names to a single computer. Host (A or AAAA records) :     Resolves an IP address to a device. The host records are essential only for the computers sharing resources on network. A records are used for IPv4 and AAAA records are used for IPv6. Mail Exchange (MX) :     Identifies mail server and routes the email messages to the specific domain. for .Example,while sending an email to abc@@sonaby.com, your mail se...

pfsense - An Open Source Firewall

pfsense is a free, open source customized distribution of FreeBSD, as a software firewall it is powerful and flexible.the current version pfsense 2.0 includes most all the features in expensive commercial firewalls, and more in many cases. The following is a list of pfsense 2.0 features. The main advantage of pfsense is we do not need to touch anything at the command line.  -Firewall - NAT (Network Address Translation) - State Table - Redundancy - Load Balancing - VPN (Virtual Private Network) - Reporting and Monitoring RRD Graphs - Real Time Info - Dynamic DNS And more....

Server 2008 vs Server 2012

Server 2008 Features :  Virtualization Server core IIS Role Based Installation Read Only Domain Controller - RODC Enhanced Terminal Services Network Access Protection Bit locker Windows Power Shell Better Security Cache / Proxy Management Server core Installation Server 2012 Features : IIS 8 Power shell 3.0 Direct access Cluster Shared Volumes De-duplication Hyper-V 3.0 Hyper-V Replica iSCSI NFS 4.1 SMB 3.0

Domain Controller Installation - Step by Step

Once you install the AD DS role , the files required to perform the role are installed on the server .However, in this case, the server is still not promoted to a DC, You must therefore promote the server to act as a DC by launching the Active Directory Domain Services Installed Wizard by using the dcpromo.exe command. Lets perform the following steps to promote the server to a DC and create a abc.com forest : 1. Click Start --> Run . The Run dialog box opens. 2. Type the dcpromo.exe command in the run dialog box and click the OK button.    - The Active directory Domain Services binaries start installing -  The Welcome to the Active Directory Domain Services Installation Wizard page of Active Directory Domain Services Installation Wizard appears. 3. Click the Next button.    - The Operating System Compatibility page appears. 4. Click the Next button.    - Then Choose a Deployment Configuration page appears. - 5. Select the Create Domain in a new...

Overview of Active Directory Domain Services

Active Directory Domain Services (AD DS) is a directory service from Microsoft that stores information about different network objects , such as printers ,databases and users at a centralized location and makes this information available to all the users of the network. For example :  AD DS stores data related to different user accounts , such as ids , passwords and email ids at a central location and provides secure access of these information to the authorized users. I am going to give a brief introduction to various elements of AD, such as domain controller - DC , domain , tree ,forest , trust relationship ,organizational unit - OU and site that collectively form an AD infrastructure. it also explores the forest and domain functional levels. Lets begin with a brief of the AD infrastructure. Exploring Active Directory Domain Services Some benefits of AD DS are as follows: - It follows a hierarchical organizational structure - It provides fault tolerance , which...