Cisco

Cisco

CCNA Networking Fundamentals

What is a network and its components?

A computer network is a group of computers (PCs) or similar devices connected to access and share network resources, such as files, storage space, printers, IP telephony, and ...
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CCNA Enterprise Infrastructure

Autonomous System Numbers – BGP

There are two types of BGP Autonomous system numbers: Private and Public. Various routing protocols use Autonomous System (AS) Numbers. IANA allocates AS Numbers to Regional Internet Registries ...
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Security

Upgrade ASA an Active/Standby Failover Pair Using the CLI

In this tutorial, we will update two ASA firewall 5585-X from CLI. Actual version 9.8.4.20Target version 9.8.4.44 Note: Perform these steps on the active unit Step 1 – ...
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Security

Configuring an SFTP repository in ISE

Cisco ISE allows you to create and delete repositories through the administrator portal. You can create the following types of repositories: Disk, FTP, SFTP, NFS, CD-ROM, HTTP and ...
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Devnet Linux

Install Docker in Ubuntu

In this article we will learn how to install Docker on an Ubuntu 20.04 operating system. 1.-Installing the initial requirements with the following commands. sudo apt-get update sudo ...
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CCNA Networking Fundamentals

Introduction to networks

Today’s networks have changed unimaginably; in just a few years, their limitations have evolved on a large scale. The first data networks could only exchange character-based information. Today ...
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Devnet Linux

Creating a virtual environment with VENV – Python

This article teaches how to set up a python virtual environment on a Ubuntu 20.04.An Environment Virtual allows you to manage separate package installations for different projects. They ...
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Enterprise Infrastructure

EIGRP Configuration

Enhaced Interior Gateway Routing Protocol – EIGRP Its internal administrative distance is 90, and the external one is 170. So that a router configured with EIGRP can exchange ...
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Devnet Linux

Install python in Ubuntu 20.04

Python 3 is installed by default on the Ubuntu 20.04 Linux distribution. To ensure that our versions are up to date, we will update and upgrade the system ...
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Devnet Linux

Basic Git Commands

We show you the most common Git commands in this Cheat Sheet. It is difficult to memorize all the important Git commands, so save this article for future ...
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Security

Umbrella and YouTube live streaming issues

A few days ago, we decided to enable Enforce SafeSearch in some Umbrella policies. However, we received several reports with problems accessing YouTube live streaming. After the change, ...
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Enterprise Infrastructure

Switched Port Analyzer (SPAN and RSPAN)

SPAN (Switched Port Analyzer) is a feature that allows copying traffic from a source port or switch vlan to a destination port. In this article, we will discuss: ...
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Enterprise Infrastructure

Configure AAA Switch Cisco IOS

AAA – Authentication, Authorization, AccountingAuthentication: Who is the user?Authorization: What can the user do?Accounting: What did the user do? Cisco switches use two protocols for communication with AAA ...
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Enterprise Infrastructure

Configuring Port Security in Cisco Switch IOS

This feature controls the number of MAC addresses per port.The maximum number of MAC addresses per port can be configured (default is 1).The MAC addresses can be configured ...
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Security

Configure SNMP on ASA Firewall

SNMPv2 Specify the recipient of an SNMP notification, indicate the interface from which traps are sent, and identify the name and IP address of the NMS or SNMP ...
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