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VLAN Trunking Protocol (VTP) Cisco

VTP or VLAN Trunking Protocol is a cisco proprietary protocol that usefull for reduce the administration in vlan configuration. when you configure vlan on VTP Server, there vlan will distributed through all switches in the domain and it’s reduced to configure the same VLAN at everywhere.  VTP are available on most of the cisco Catalyst

Configure Port Security on Cisco Switch

In this tutorial I’ll discuss about port security on cisco switch.  Port security is a mecanism to secure port switch layer 2 which allows for limitation device that connect to these port based on mac address filters. So that unauthorized device can’t used the port that enables the port security. When device try to connect

Configuration Intervlan routing on Switch Layer 3 Cisco

Hello everyone, in this tutorial I’ll discuss about how to configuration intervlan routing on Switch layer 3.  Before I have discuss about intervlan routing on router device There is a slight difference for the configuration between router and switch L3. The following is the topologi are used : And the following is step by

How To Install and Configure Apache2 webserver (httpd) on Centos 8

Hello everyone, in this tutorial I’ll discuss about how to install and configuration of httpd webserver on linux centos 8. I used ip address for this server. First install httpd packages on your system [root@server1 ~]# yum install httpd   Set enabled and start httpd service [root@server1 ~]# systemctl enable –now httpd   Configure

How To Install and Configure DNS Server on Linux Centos 7

DNS Server is the service that used for domain translation server for translate the domain become ip address and vice versa. In this tutorial I’ll discuss about how to DNS server configuration on linux Centos 7.  For this article I’ll use ip address for the dns server network for client network. First make

How To Configure Load Balancing web server using HAProxy

HAProxy  (High Availability Proxy) is a Open source software for TCP/HTTP Loadbalancing and proxying solution that can be run in linux, macos and freeBSD.  HAProxy is used for improve performance and reliability of server that distributing the workload into multiple server. There are the topology are used : Make sure you’re have configured ip address

How To Configuration sudo access for regular user (Interactive root shell) in Linux system

When you use linux system and you have user or new user, sometimes you need to run command that’s need to root permissions or you need to access root. Usually you can use sudo at first command and sudo -i  to move from regular user to root. But when you try to access with sudo command and

Create And Manage New User/Group on Linux

In this tutorial I’ll discuss about user and group management on linux. When you using linux operating system you must know to manage user and group on your system. In linux system user and group has unique id. For user it called as UID (User ID) and for group is GID (Group ID). UID has

How To Secure NGINX Webserver with Let’s Encrypt on Ubuntu server 20.04

Hello everyone, in this tutorial I’ll discuss about how to configuration secure nginx webserver (https) using let’s encrypt on ubuntu 20.04.  Let’s encrypt is a Certificate Authority (CA) that provides easy way to obtain and install SSL Certificate as free on your website. Configuration Let’s Encrypt using certbot and for do this you must have

Securing Web Server with HTTPS linux ubuntu 20.04

In this tutorial I’ll discuss about how to securing webserver with https on linux ubuntu 20.04.  When we use http protocol all data is sending using plaintext, so that data can be read by third parties. It’s not secure. So we must add the additional protocol using SSL or TLS for the secure web (HTTPs).