Wednesday, March 13, 2024

JNCIA LAB



This lab requires :
-Simulation/ Emulator Software GNS3
-Oracle VM VirtualBox
-And Juniper Junos Olive Image
( you can search it on google or copy this link (download and how to install) "https://www.youtube.com/watch?v=14uMxKgos9I")

Recomended hardware requirments:
-CPU: 4 Cores Intel or AMD High end Procesors.
-RAM: 8GB DDR3/4
-Storage: SSD >128GB
-OS: Windows 10 Pro.


I. STATIC ROUTING SINGLE HOP AND MULTI HOP


I.1 - Static route single hop:
the objectif : R1 can ping IP Loopback R2 and vice versa.
First... we must configure the IP Address.

# Interface Configuration in R1
set interface lo0.0 family inet address 1.1.1.1/32
set interface em0.0 family inet address 12.12.12.1/24

# Interface Configuration in R2
set interface lo0.0 family inet address 2.2.2.2/32
set interface em0.0 family inet address 12.12.12.2/24



Second... we configure static route in R1 and R2,  Because R2 is edge router, we configure R2 using default route.

# static route configuration in R1
set routing-options static route 2.2.2.2/32 next-hop 12.12.12.2

#static route configuration in R2
set routing-options static route 0.0.0.0/0 next-hop 12.12.12.1



 

 










Saturday, January 13, 2024

Linux Fundamental

Can use any linux distribution, I use Ubuntu Server 22.04 (Jammy Jellyfish)

okay let's go

1. File Hierarchy


 "/"
slash is like C in windows OS, yes... file system. root directory of the entire file system.




Like the picture above, u can practice it. in the "/" contain some folders (blue color) and file(white color).
















2. Navigating File 

-Absolute Path : always starts with "/" (enter the root directory first)
example :



-Relative Path : not necessarily start with "/" (just customize with path location)
example :



 

*
pwd : prints the full name (the full path) of current/working directory

ls:
ls is a Linux shell command that lists directory contents of files and directories
example:


 

 

 

 


3. Creating File & Directory 

touch : used to create a new empty file and to change the timestamps of existing file
example :


 

 


mkdir :
used in Linux to create a new directory/folder
example:


 

 


4. File Manangement

cd: used to change the current directory of the terminal
example:



 

 

 

 

Saturday, August 19, 2023

Default VLAN vs Native VLAN.





Even a ccna still confused ~Default VLAN VS Native VLAN.
What is difference between Default VLAN and Native VLAN........?

At it's simplest :

- VLAN 1 is the Default VLAN and can't be changed. yes is like factory default.

- NATIVE VLAN : by default NATIVE VLAN is VLAN 1 but can be changed to any VLAN, and used for switch, that do not supporting VLAN tagging ~ switch, that only supporting untagged vlan traffic.

- one of the many difference between Default VLAN and Native VLAN is , only one Default VLAN per switch, but per switch can handle multiple Native VLAN. ~ my favorite part for explanation.


Friday, March 10, 2023

HOW TO LEARN DOCKER ?

Docker Architecture

What is Docker ?

- Docker is like vessel that carries container, yes container. 

- Is many types of object on the vessel's containers, shoes, electronic, fruit, vegetable or many more.
it's very eficient because it carry a lot and departs once.

- on a computer, Docker can carry many  services in one guest os without Virtual Machine.
- yes Docker and Virtual Machine is Different technologies but give almost the same solution.


What is Difference between Docker and Virtual Machine ?









Friday, January 13, 2023

NETWORK SECURITY (MikroTik)



Today so many description, clasification, method about network security, but at it's simplest in network security is ... "prevention is better than cure" ~ it's universal 😆

yes we must prevent, prevent and prevent!!!


to be continued 😉