Articles That Might Interest:

Cisco CallManager-CCME

CallManager Express Setup for IP Phone Firmware U…

This article will show how to configure CallManager Express (CME) for the IP phone firmware upgrade process. Upgrading your Cisco IP phones is generally a good practice, especially when upgrading you…

SASE & SD-WAN Networks

The Need for a Converged SASE Platform. Convergin…

The digital transformation is pushing applications to the cloud, the 2020-2022 pandemic shifted employees to work from home, and the number of resulting new use cases is sending IT leaders scrambling…

Network Protocols

File Transfer Protocol - FTP

File transfer is among the most frequently used TCP/IP applications and it accounts for a lot of the network traffic on the Internet. Various standard file transfer protocols existed even before the…

Windows Servers

Configuring Domain Group Policy for Windows 2003

Windows 2003 Group Policies allow the administrators to manage a group of people accessing a resource efficiently. The group policies can be used to control both the users and computers. They give b…

Cisco CallManager-CCME

Unity Express License Setup & Installation - Soft…

Unity Express provides any organization with a quick and convenient way to manage voicemail, auto attendant and interactive voice response (IVR) services. These services are provided within the…

Windows Servers

Windows Server Group Policy Link Enforcement, Inh…

Our previous article explained what Group Policy Objects (GPO) are and showed how group policies can be configured to help control computers and users within an Active Directory domain. This article…

Cisco Services & Technologies

Understanding Cisco Dynamic Multipoint VPN - DMVP…

Dynamic Multipoint VPN (DMVPN) is Cisco’s answer to the increasing demands of enterprise companies to be able to connect branch offices with head offices and between each other while keeping costs lo…

Cisco CallManager-CCME

CallManager Express GUI Software Installation & C…

Cisco CallManager Express, also known as CME or CCME, runs on both Cisco ISR Routers and UC500 platform, including UC520, UC540 and UC560. CallManager Express's PBX functionality is built into the I…

TCP - UDP Protocol Analysis

TCP Header Anaylsis - Section 6: TCP Options

The TCP Options (MSS, Window Scaling, Selective Acknowledgements, Timestamps, Nop) are located at the end of the TCP Header which is also why they are covered last. Thanks to the TCP Options field we…

Cisco Switches

Cisco Catalyst Err-disabled Port State, Enable &…

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…

VPN Services & Guides

Complete Guide to SOCKS Proxy - How to Securely B…

The internet is in a strange place right now. It’s no longer the open, free place it used to be. Increasingly, users are being subject to website blocks, attacks, and surveillance. For true safety or…

The OSI Model

The OSI Model: Layer 3 - Network Layer

The Network layer is responsible for routing through an internetwork and for networking addressing. This means that the Network layer is responsible for transporting traffic between devices that are…