I do know that to tap into a router in Ireland, you use the local first six digits and then .1.1
For example,
Connect the ethernet cable directly from the computer to the router and type in the web browser \: 192.168.1.1.
The first 6 digits should be different in Korea, but easily enough found out I'm sure. Once your in, it may still be in Korean, but you will see something that looks like a password and you can change it to suit.
Hope this helps in some small way.