Articles That Might Interest:

Routing

OSPF - Part 3: OSPF Adjacency & Neighbor Forming…

This is the thrid article of our 6-part OSPF series (see below) that describes how OSPF routers perform neighbor relationship and adjacency. We’ll examine how OSPF discovers neighbors by sending Hell…

Cisco CallManager-CCME

How To Stop CallManager (CUCM) 7, 8, 9, 10.5 with…

Cisco Unified CallManager (CUCM) and its Voice Gateway relies on the telecommunication provider (telco) to send the correct call details for every incoming call, to allow the system to correctly proc…

Spanning Tree Protocol (STP)

Spanning Tree Protocol – Part 2: Rapid STP Port C…

Spanning Tree Protocol, Rapid STP port costs and port states are an essential part of the STP algorithm that affect how STP decides to forward or block a port leading to the Root Bridge. In our prev…

Cisco Routers

How To Configure Windows VPDN (PPTP) Dialup Conne…

Setting up a Windows VPDN connection is a required task in order to connect to a remote network. In previous articles we covered the set up of a VPDN - PPTP server on a Cisco router. Click here to fi…

Network Fundamentals

Power over Ethernet - Understanding PoE Technolog…

Power over Ethernet (PoE) was invented by PowerDsine back in 1997 and the first power injector (Midspan) was installed in 1998! Many manufacturespartnered with PowerDsine to make useof this innovatio…

Web Application Vulnerability Scanners

Acunetix Online: Run a Free Scan for Network and…

Acunetix has refreshed its online web and network vulnerability scanner, Acunetix Online, with a massive update. The new Acunetix Online now incorporates all the features found in its on premise offe…

Ethernet Protocol, CSMA/CD, Collisions

The IEEE 802.3 Frame Format

The following is a description of the Ethernet Frame Format described in the IEEE 802.3 Specification. The 802.3 Specification defines a 14 byte Data Link Header followed by a Logical Link Control He…

Palo Alto Networks

The Benefits of Palo Alto Networks Firewall Singl…

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…

Web Application Vulnerability Scanners

Free Web Application Vulnerability Report (2019)…

Acunetix has just released their annual Web Application Vulnerability report which aims to provide security professionals, web application developers, system administrators, web server administrators…

Routing

Routing Information Protocol - RIP

Routing Information Protocol (RIP) is a distance-vector routing protocol that is commonly used in small to medium-sized networks. It is one of the oldest routing protocols still in use today, h…

Windows Servers

Free Webinar: Migrating from Hyper-V to VMware

If your organization is planning to migration from a Hyper-V virtualization environment to VMware then this FREE webinar is just for you. Aimed toward Hyper-V and VMware admins this webinar will cov…

Routing

OSPF - Part 2: How OSPF Protocol Works & Basic Co…

This article covers basic OSPF concepts and operation. We explain how OSPF works, how OSPF tables are built on an OSPF-enabled router and their purpose (Neighbour Table, Topology Table, Routing Table…