# 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)