What is deep packet inspection?

Typically routers are designed to only look at the destination address of each packet. This allows routing decisions to be made as quickly as possible. However, routers do have access to the rest of contents of the packets that pass through them. Looking at other parts of the packet it referred to as deep packet inspection. Deep packet inspection can be used to accomplish many things, but it’s not clear whether any of them are good things to do.
Credits: Talking: Geoffrey Challen (Assistant Professor, Computer Science and Engineering, University at Buffalo). Producing: Greg Bunyea (Undergraduate, Computer Science and Engineering, University at Buffalo).
Part of the www.internet-class.org online internet course. A blue Systems Research Group (blue.cse.buffalo.edu) production.

[@wylde780]

I thought this was going to be a boring video until i saw your hat on backwards.

[@KoshyGeorge]

You can never go wrong with a backwards hat.

[@Aal20N55]

it can also be used for security purposes to protect against Denial of Service attacks

[@juanf6923]

I saw some vpn that use "anti dpi" to get free net.

[@Denis-db4yp]

What tools can be used to figure out if policies are being applied to my internet traffic by my ISP?

[@dhinakaranvenkatesan6586]

Good explanation

[@user-gt4yo4dt2x]

How about running deep packet inspection on a powerful DPU (e.g., Bluefield-2) ?

[@kreep182]

You got one thing though. Cats like to watch human videos. Lol great video btw

[@yogiparmar8238]

Which types of Firewall that user DPI or able to look at the content of any packet

[@shrutikajambhale5111]

Then what is the difference between deep packet inspection and layer filtering?

[@jccdsym6605]

DPI is a type of Packet filtering, at layer 7 of the OSI model. Layer filtering would be a broader term that would encapsulate DPI, Portguard, ACL's and the like.

[@just2bme1000]

Dang my ears 🤦‍♂️

[@rickjames6948]

cover up that bald head, love it.

[@basildh9682]

Wrong explanation my dea, Plz be aware