Ethernet cabling (cable selection)

In order to communicate between two devices Selection of right Ethernet cable is essential. An Ethernet Cable act as communication media for communicating devices.

Making a Custom length Ethernet Cable

 Ethernet cables are the standard cables commonly used to connect a modem to a router, and, likewise, to connect a router to a computer’s network interface card (NIC).Today almost everyone has plugged their computer into a broadband Internet modem with a cable such a cable is an Ethernet Cable.
These cables can be found pre-prepared with fix length, However sometime these pre-made cables are of not the desired length and then we are required to prepare a custom length Cable. This article provides the steps required for preparing a cable of your desired length.

DMVPN Configuration on Cisco Router

DMVPN stands for Dynamic Multiple Virtual Private Network. If you are not familiar with DMVPN then Click Here to get introduce with this quite amazing feature. This article is focused just on how to cofigure DMVPN on a Cisco router

Dynamic Multiple Virtual Private Network (DMVPN)

DMVPN is a dynamic form of a VPN, capable of creating a full mesh VPN network dynamically through HUB and Spoke topology. It is a key to undertake the increasing demand of “connecting branch offices to Headquarter and to each other”.

Dmvpn itself is not a protocol, it’s merely a design model based on standard protocols like GRE, NHRP and IPSEC (IPSEC is optional for improving security of data).

GRE Configuration ON Cisco Router

It is assumed that you know the basics of GRE. If you have no idea about GRE then Click Here to study about Generic Routing Encapsulation (GRE). This blog goes only with the configuration of GRE.

Generic Routing Encapsulation (GRE)

Generic Routing Encapsulation (GRE) is a tunneling/encapsulation protocol that encapsulates data inside an IP packet and route it over IP Networks to its ultimate destination through a virtual point to point link (GRE tunnel).

VLANs Concept

VLAN stands for Virtual Local Area Network and is defined as a group of devices on one or more LANs that are configured so that they looks like they are connected to one LAN. The Main functions of a VLAN are to segment a LAN, form logical Groups and to limit the broadcasts to legitimate users only that helps in increasing security.

Using ASA to Perform Stateful Filtering

Using Zone Base Firewall to Perform Stateful Filtering

Using CBAC (Context Base Access Control) for stateful Filtering

CBAC (Context Base Access Control) is both a stateful and an application firewall that is it can filter traffic from network layer to Application Layer. 

How to Perform Stateful Filtering

This article defines the Methods that can be used for performing Stateful Filtering.

Stateful filtering/ Dynamic Packet Filtering

Stateful Filtering or Stateful Inspection also termed as dynamic packet filtering is a technique developed by checkpoint software technologies in 1993. 

Configuration of VLANs

Creating VLANs in Cisco Switch
For configuration of VLANs we assume that you have basic knowledge of VLANs if you don't have any idea about VLANs then Click Here to get some knowledge about VLANs.