Author Archives: Farzand Ali

Understanding the Top command on Linux

Know what is happening in “real time” on your systems is in my opinion the basis to use and optimize your OS. On ArchLinux or better on GNU/Linux in general the top command can help us, this is a very useful system monitor that is really easy to use, and that can also allows usContinue reading “Understanding the Top command on Linux”

Configure DNS forwarders in Windows Server 2012 R2

In the first article in our series on DNS forwarders, we looked at some best practices for DNS forwarding. In this second article I’ll show you how to configure a DNS server with forwarders in Windows Server 2012 R2. As always with Windows, you can change, add, and remove forwarders by using either the Windows GUIContinue reading “Configure DNS forwarders in Windows Server 2012 R2”

Configure a DNS Server on Windows Server 2012 or 2012 R2 to use OpenDNS

First, make sure that your clients are pointing to your Windows DNS server. I know this sounds pretty obvious, but you’d be surprised how many people miss this step. If you’re in an Active Directory (AD) environment, your clients really need to be pointing to DNS that is running on your Domain Controller (DC). IfContinue reading “Configure a DNS Server on Windows Server 2012 or 2012 R2 to use OpenDNS”

Deep Packet inspection (DPI) / Layer 7 application recognition / Network Based application recognition (NBAR)

Deep packet inspection (DPI) is an advanced method of packet filtering that functions at the Application layer of the OSI (Open Systems Interconnection) reference model. The use of DPI makes it possible to find, identify, classify, reroute or block packets with specific data or code payloads that conventional packet filtering, which examines only packet headers,Continue reading “Deep Packet inspection (DPI) / Layer 7 application recognition / Network Based application recognition (NBAR)”

How To Install Trusted Root Certification Authority With MMC

Requirement: sometimes we need to install a third part Certificate as “Trusted Root Certification Authority”. Solution: You can run windows MMC tool by following: 1) Start MMC Tool Click Start -> Run -> Entry MMC and click ‘OK’ 2) Click File -> Add/Remove SnapIn… 3) Add Certificate Select ‘Certificates’ in left panel and click ‘Add’Continue reading “How To Install Trusted Root Certification Authority With MMC”

Distribute Certificates to Client Computers by Using Group Policy

Applies To: Windows Server 2012 You can use the following procedure to push down the appropriate Secure Sockets Layer (SSL) certificates (or equivalent certificates that chain to a trusted root) for account federation servers, resource federation servers, and Web servers to each client computer in the account partner forest by using Group Policy. Membership in DomainContinue reading “Distribute Certificates to Client Computers by Using Group Policy”

Creating and formatting a hard disk partition

To create a partition or volume (the two terms are often used interchangeably) on a hard disk, you must be logged in as an administrator, and there must be either unallocated disk space or free space within an extended partition on the hard disk. If there is no unallocated disk space, you can create someContinue reading “Creating and formatting a hard disk partition”

CBWFQ + LLQ – VoIP/Voice priority traffic – Bandwidth management template

Low-Latency Queuing (Congestion Management and Queuing) Neither WFQ nor CBWFQ can provide guaranteed bandwidth and low-delay guarantee to selected applications such as VoIP; that is because those queuing models have no priority queue. Certain applications such as VoIP have a small end-to-end delay budget and little tolerance to jitter (delay variation among packets of aContinue reading “CBWFQ + LLQ – VoIP/Voice priority traffic – Bandwidth management template”