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Articles:
UDP Protocol - Header
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Suggested Articles:
Network Address Translation - NAT
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Static NAT (also called inbound mapping) is the first mode we're going to talk about and also happens to be the most uncommon between smaller network…
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Novell's Proprietary Frame Format was developed based on a preliminary release of the 802.3 specification. After Novell released its proprietary form…
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This section contains one of the most well-known fields in the TCP header, the Source and Destination port numbers. These fields are used to specify…
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In our previous article we explained how a Netflow Analyzer can help you gain visibility into your user traffic, application traffic and data flows w…
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SNMP (Simple Network Management Protocol) and Netflow are both popular protocols with admins, prized for their ability to give visibility over the ne…
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This article will cover the basics of Netflow, including its use cases, Netflow supported devices, Netflow history, and variants. We’ll also dive int…
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Monitoring network traffic & bandwidth usage via Netflow is mandatory for any type and size network. Gaining visibility into user traffic, applic…
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VLAN Networks
InterVLAN Routing - Routing between VLAN Networks
This article deals with the popular topic of InterVLAN routing, which is used to allow routing & communication between VLAN networks. Our article anal…
VLAN Networks
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VLANs are usually created by the network administrator, assigning each port of every switch to a VLAN. Depending on the network infrastructure and securit…
VLAN Networks
VLAN Security - Making the Most of VLANs
It's easy to see why virtual LANs have become extremely popular on networks of all sizes. In practical terms, multiple VLANs are pretty much the same as h…
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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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Link State routing protocols do not view networks in terms of adjacent routers and hop counts, but they build a comprehensive view of the overall network…
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OSPF - Part 1: Introduction, OSPF Packet Structure, OS…
Open Shortest Path First (OSPF) is a popular routing protocol developed for Internet Protocol (IP) networks by the Interior Gateway Protocol (IGP) working…
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Interior Gateway Protocol - IGRP
IGRP (Interior Gateway Routing Protocol) is a Cisco proprietary distance-vector routing protocol used in enterprise networks to exchange routing informati…
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When you shadow copy a disk volume, you are actually generating a snapshot of the changes made to the folders and files within the disk volume at a certai…
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In a Windows server environment, it is very important that only authenticated users are allowed to log in for security reasons. To fulfill this requiremen…
Cisco Routers
Configuring Dynamic NAT (NAT Overload) On A Cisco Rout…
NAT (Network Address Translation) is a method that allows the translation (modification) of IP addresses while packets/datagrams are traversing the networ…
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How to Detect Routing Loops and Physical Loops with a…
When working with medium to large scale networks, IT departments are often faced dealing with network loops and broadcast storms that are caused by user e…







