Cant get internet connection on my ps

Eat **** and die

First check wether you received a valid ip address for your local network. usually, this should be something like 192.168.x.y. if so, then you might indeed face a dns issue. dns is used to resolve web site names to ip address. usually, your ip service provider will broadcast the external dns servers for your router to recognize.

try to connect with a computer first. if it works, check the ip settings. if your computer also cannot connect without explicit dns server settings you can do one of the following:
- explicit dns server address in ps3. go to "advanced internet connection settings", and then to "dns settings" and set the dns server address
- purchase a 30$ network router and hook it between your internet and the ps3. in the router settings, set the dns server address to be broadcasted to the clients. you can use 168.126.63.1 and 2 which are dns servers in korea (i live in korea), but you might want to find the server near to your location or promoted by your isp