---
# System prepended metadata

title: Networking
tags: [networking]

---

# Networking


###### tags: `networking`

[TOC]


## Identifying Devices on the network



### MAC Format

![](https://i.imgur.com/j2sUTkS.png)

### MAC spoofing 

![](https://i.imgur.com/tyyS9zm.png)


## Packet And Form 


### 

![](https://i.imgur.com/PBEmnoM.png)


## Port

![](https://i.imgur.com/XFXiCT1.png)




## Firewall (layer3 ,layer 4)

### Manage 

![](https://i.imgur.com/rsRsfVD.png)


#### Category 


#### Statefull(dynamic)

check -> connection()

![](https://i.imgur.com/SY4RXIq.png)



#### Stateless(stateless)

![](https://i.imgur.com/0onsFCj.png)

![](https://i.imgur.com/wZ0JhWt.png)


## VPN

![](https://i.imgur.com/Q8TJ3JE.png)


### Benefit

![](https://i.imgur.com/xOA4fJL.png)


### category
![](https://i.imgur.com/Yg6sajG.png)


## OSI 7 layer 


### Application


![](https://i.imgur.com/QP6jOjb.png)

- Domain resolution systems 
- GUI
- data receive/send (user)


#### HTTP/HTTPS 

![](https://i.imgur.com/ENVYJcP.png)




### Presentation 

![](https://i.imgur.com/SOm9cNJ.png)


### Session 

![](https://i.imgur.com/2YAKJWM.png)

- Session
- Packet fragment 




### Transport 

![](https://i.imgur.com/LHQLmq5.png)


### Network

![](https://i.imgur.com/yLYVnFt.png)


### Data-link

![](https://i.imgur.com/cIVVihC.png)
