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Cisco CallManager-CCME
The Cisco - Linksys SPA8000 is an 8-port IP Telephony Gateway that allows connections for up to eight analog telephones (provides 8 FXS ports) to a V…
Cisco Routers
Remote VPN access is an extremely popular service amongst Cisco routers and ASA Firewalls. The flexibility of having remote access to our corporate n…
Cisco Routers
One of the greatest perhaps features of Cisco routers is that most commands used in the IOS software they run on, are identical across multiple platf…
Cisco Services & Technologies
 What Is Unified Communications (UC)? Unified communications is a very popular term these days and we see it appearing on almost every vendor a…

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Data Center Articles:

This article introduces the Cisco Nexus product family (Nexus 9000, Nexus 7000, Nexus 5000, Nexus 3000, Nexus 2000, Nexus 1000V and MDS 9000). We exp…
Whether you’re new to Cisco Nexus switches or have been working with them for years this article will show how to get around the Nexus NX-OS usi…
This article shows how to perform an ISSU (In-Service Software Upgrade) on a Nexus Data Center switch (7000 and 7700 models) and avoid service and ne…
It’s a reality – Australia now has its own Official Cisco Data Center User Group (DCUG) and it’s growing fast! Originally inspired by Cisco Champions…

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Cisco Switches
Driven by our thirst for technical material and experience, we thought it would be a great idea to start presenting various installations of Cisco equipme…
Cisco Switches
It's no news that we here at Firewall.cx enjoy writing about our installations of Cisco equipment and especially devices that we don’t get to see and play…
Cisco Switches
Running Spanning Tree Protocol (STP) in a large network environment can be a challenging task especially when features/enhancements such as BPDU Filter an…
Cisco Switches
This article explains the procedure that should be followed to correctly shutdown/powerdown a Cisco Nexus 7000 series module and remove it from the chassi…

Cisco Firewalls
One Appliance – One Image is what Cisco is targeting for its Next Generation Firewalls. With this vision, Cisco has created a unified software image named…
Cisco Firewalls
Cisco’s Adaptive Security Appliance (ASA) Firewalls are one of the most popular and proven security solutions in the industry. Since the introduction of t…
Cisco Firewalls
This article explains how to configure a Cisco Firepower 2100 series device to operate in Appliance mode. We’ll show you how to switch from Platform mode…
Cisco Firewalls
The Cisco ASA Firewall 5500-X series has evolved from the previous ASA 5500 Firewall series, designed to protect mission critical corporate networks and d…

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Virtualization & VM Backup
In this article, we’ll show you how to setup or install Microsoft Windows 11 on VMware’s ESXi servers and bypass the Trusted Platform Module version 2.0 (…
Virtualization & VM Backup
In this article, we'll show you how to deal with VMs which are reported to have an Invalid Status as shown in the screenshot below. This is a common…
SASE & SD-WAN Networks
The digital transformation is pushing applications to the cloud, the 2020-2022 pandemic shifted employees to work from home, and the number of resulting n…
SASE & SD-WAN Networks
Global connectivity is top of mind for many IT teams at organizations of all sizes. We are currently in the middle of a dramatic shift in business and tec…