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General network discussions, designing netwokrs, configuring routers, firewalls & switches, VPN and network concepts.

The difference between Cisco IOS IP base image and the IP services image

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CISCO Logo

 

The IP base is for the Standard Multilayer Software Image (SMI) switches, and the IP services image is for the Enhanced Standard Multilayer Software Image (EMI) switches in Cisco IOS Software Release 12.2(25)SEB and later.

Data Center Tiers

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Data Center Tiers

Data Center Tiers

 

What is data center tiers? What is tier 1 data center? Which tier / level is the best for maximum uptime?
 
A. Tier 1 to 4 data center is nothing but a standardized methodology used to define uptime of data center.

cyberoam Web Filtering review

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Cyberoam’s UTM devices have a keen concentrate on identity-based security and its most recent CR750ia takes that tech to mid-sized businesses. A Lot Of rivaling vendors proffer that specific feature – where security policies might be applied to particular individuals – though Cyberoam goes that additional mile with a more difficult range of controls.

How to Negotiate Your Next Telecom Contract

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Time to Negotiate a New Telecom Contract?

Great! After reading this article you'll be ready to negotiate that next telecom contract like a seasoned pro. The first steps to successful telecom contract negotiation begins by simply understanding the key areas which most contracts are based

Windows 2003 / 2008 event logging to Syslog

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Windows 2003 / 2008 event logging to Syslog

event log

I stumbled on a seemingly unique requirement this week to log file access for a Windows network share. Of importance, was the logging of object deletions, and writes. For most Windows admins, this probably sounds like a simple task of setting up group policies or local security policies to audit object access, and the required auditing policies on the objects requiring this level of logging

Syslog severity level indicator

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syslog message has a Severity level indicator:

GNS3 course: Introduction

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GNS3 course Introduction

GNS course

This is the first lesson in GNS3 course. In this lesson, we discussed the following points

- What is GNS3 ?

- How to download and install GNS3 ?

GNS3 Course

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GNS3 Video Course

 
GNS3

Introduction
From our perspective as GROOK.net team, we would like to share our knowledge with world. We will start a GNS3 Course. We will use best methods to explain this software using videos as well as text documents in GROOK.net.  We will discuss each lesson in GROOK.net forum to share the knowledge.

What Is GNS3?
GNS3 is a graphical network simulator that allows you to easily design network topologies and then run simulations on them. At the moment GNS3 supports IOS

What is Dynamips ?

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What is Dynamips ?

network

Dynamips is a project to emulate a Cisco 7200 on a traditionnal PC. Now, it also supports Cisco 3600 series (3620, 3640 and 3660), 3700 series (3725, 3745) and 2600 series (2610 to 2650XM, 2691)

Network Monitoring Software

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Network Monitoring Software

network monitoring

The term network monitoring describes the use of a system that constantly monitors a computer network for slow or failing components and that notifies the network administrator in case of outages via email, pager or other alarms. It is a subset of the functions involved in network management

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