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Articles:
ICMP Protocol - Part 1: Introduction
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Suggested Articles:
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…
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The Session layer is responsible for setting up, managing and then tearing down sessions between Presentation layer entities. The Session layer also…
ICMP Protocol
ICMP Protocol - Part 6: Redirect Messages
The ICMP - Redirect Message is always sent from a gateway to the host and the example below will illustrate when this is used.
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Netflow Articles:
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Netflow vs SNMP. Two Different Approaches to Netw…
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VLAN Networks
VLANs - IEEE 802.1q Trunk Link Protocol Analysis
While the VLAN Tagging article briefly covered the IEEE 802.1q protocol this article will continue building upon it by further analyzing the IEEE 802.1q T…
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Static VLANs
VLANs are usually created by the network administrator, assigning each port of every switch to a VLAN. Depending on the network infrastructure and securit…
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The VLAN Concept - Introduction to VLANs
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Hybrid routing protocols are a combination of distance-vector and link-state routing protocols, and are used to provide a more efficient and scalabl…
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Distance Vector Routing Protocols
Distance Vector routing protocols use frequent broadcasts (255.255.255.255 or FF:FF:FF:FF) of their entire routing table every 30 sec. on all their interf…
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OSPF - Part 3: OSPF Adjacency & Neighbor Forming Proce…
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…
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Cisco ASA 5500-X Series Firewall with IPS, ASA CX & Fi…
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