Plase explain the network letters s and r to me please

[Kawar]

Kawar, DMZ stands for Demilitarized Zone. You have a public IP that is handed to your router. Your router then gives private IP addresses out to the computers inside the network. If you look in your router and find a DMZ configuration, you can put your PS2 private IP address in there and it will not have any ports blocked for it. You must figure out how to log into your router on your own. Normally, if you go to a computer and use "ipconfig" from the command prompt, the gateway will be the IP address of the router. Put that in your web browser to make changes as needed. The default username is normally "admin" and the default password is normally blank, "password", or "admin".

I just got in to my router and i found i do have DMZ but now i have no clue how to find my PS2s IP.Btw i am going to set this up and test,the lag this is going to help me see if it is my router or files on my ps2 or my ps2.

also i am still looking for someone to explain port forwarding to me please

I found the following links maybe you can help me make heads or tales of them and explain them a bit to me please.
https://support.us.playstation.com/a...tail/a_id/1135
https://support.us.playstation.com/a...NlcGpIbA%3D%3D