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Cisco Services & Technologies
Apple Mac OS X users are frequently faced with the Cisco VPN Client Error 51 - Unable to Communicate with the VPN Subsystem as shown in the screenshot below: When this error is produced, users wil…
SASE & SD-WAN Networks
Software Defined Wide Area Networking (SD-WAN) is changing the way that businesses connect to the cloud. With SD-WAN, organizations can move away from closed, proprietary hardware solutions, bringing…
Windows Servers
One of the first things IT Administrators and IT Managers notice after a fresh installation of Windows 2012 Server is that there are no Desktop Icons apart from the Recycle Bin. Desktop icons such as…
Web Application Vulnerability Scanners
Acunetix has just released their annual Web Application Vulnerability report which aims to provide security professionals, web application developers, system administrators, web server administrators…
ICMP Protocol
The Internet Control Message Protocol (ICMP), is a very popular protocol and actually part of an Internet Protocol (IP) implementation. Because IP wasn't designed to be absolutely reliable, ICMP came…
Cisco Switches
Errdisable is a feature that automatically disables a port on a Cisco Catalyst switch. When a port is error disabled, it is effectively shut down and no traffic is sent or received on that port…
Spanning Tree Protocol (STP)
In this article we will examine the Spanning Tree Bridge ID structure, explain why it has increments of 4096, how VLAN information is embedded (for Per-VLAN Spanning Tree & multiple STP instances…
Routing
Enhanced Interior Gateway Routing Protocol (EIGRP), similar to IGRP, is a Cisco proprietary routing protocol that is used to exchange routing information between different routers within a network. E…
ManageEngine Firewall Analyzer
The utilization of log analyzers, such as Firewall Analyzer, in network infrastructure plays a pivotal role in enhancing cybersecurity and fortifying the overall security posture of an organization…
OpManager - Network Monitoring & Management
As technology evolves, so do our networks. Today's sprawling network infrastructures are intricate ecosystems, demanding more from IT teams than ever before.  Configuration management, complianc…
SASE & SD-WAN Networks
This article explores the need for Secure Access Service Edge (SASE) in today’s organizations. We show how one of the most advanced SASE platforms available, combines VPN and VPN and SD-WAN capabilit…
Palo Alto Networks
What makes Palo Alto Networks Next-Generation Firewall (NGFW) so different from its competitors is its Platform, Process and Architecture. Palo Alto Networks delivers all the next generation firewall…

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