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JMCristobal

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JMCristobal

JMCristobal Posts

How-to Install SSH Server on Linux 

By JMCristobal
January 11, 2023
Devnet Linux
1.- Install with apt-get command on Ubuntu: sudo apt-get install openssh-server 1.- Install with dnf command on Fedora: sudo dnf install openssh-server 2.- Enable the ssh service: sudo ...
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Configure serial interface with encapsulation PPP and PAP authentication

By JMCristobal
November 16, 2022
CCNA
PPP is a standard protocol used to send data over synchronous serial links. PPP also provides a Link Control Protocol (LCP) for negotiating the properties of the link. ...
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Configure serial interface with encapsulation PPP and CHAP authentication

By JMCristobal
November 9, 2022
CCNA
PPP is a standard protocol used to send data over synchronous serial links. PPP also provides a Link Control Protocol (LCP) for negotiating the properties of the link. ...
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Configure serial interface with encapsulation HDLC

By JMCristobal
October 12, 2022
CCNA
Cisco High-Level Data Link Controller (HDLC) is the Cisco proprietary protocol for sending data over synchronous serial links. Cisco HDLC is the default for data encapsulation at Layer ...
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What is a network and its components?

By JMCristobal
September 28, 2022
CCNA Networking Fundamentals
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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Autonomous System Numbers – BGP

By JMCristobal
September 14, 2022
CCNA Enterprise Infrastructure
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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Install EVE-NG on VMware ESXi

By JMCristobal
September 7, 2022
Network Lab
EVE-NG platform allows to create virtual proof of concepts, solutions and training environments. EVE-NG is the first clientless multivendor network emulation software that empowers network and security professionals ...
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Upgrade ASA an Active/Standby Failover Pair Using the CLI

By JMCristobal
August 20, 2022
Security
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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Configuring an SFTP repository in ISE

By JMCristobal
July 27, 2022
Security
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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Install Docker in Ubuntu

By JMCristobal
June 15, 2022
Devnet Linux
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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Introduction to networks

By JMCristobal
June 1, 2022
CCNA Networking Fundamentals
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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Creating a virtual environment with VENV – Python

By JMCristobal
May 18, 2022
Devnet Linux
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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EIGRP Configuration

By JMCristobal
May 4, 2022
Enterprise Infrastructure
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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RIPv2

By JMCristobal
May 1, 2022
Networking Fundamentals
Routing Information Protocol Version 2The first classless routing protocol is the evolution of RIP v1, plus it supports VLSM (Variable Length Subnet Mask).RIPv2 is known as a Vector ...
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Routing Table

By JMCristobal
April 27, 2022
Networking Fundamentals
The primary function of a router is to send a packet to its destination network, which is the destination IP address of the packet. The router looks up ...
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About this Website

This website is free and educational. Contains my thoughts and ideas, which may not represent the thoughts of the various technologies mentioned here. All product names, logos, and illustrations are copyright/trademarks of their respective owners.
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