What is DMZ mode and why would I use it?by matt on March 20, 2006
Q: I am trying to use a headset when playing my ps2 game but it does not work when someone else is hosting the game. If I am hosting the game then I can hear people and they can hear me but if someone else is hosting the game I cannot hear them and they cannot hear me. I have opened all the required ports what should I do now?
A: If you have done all the research and opened all the ports you think you need opened and your application (or game in this case) is not working the way it should be then this is the prefect chance for you to test your game in DMZ. What is DMZ exactly? DMZ means demilitarized zone, which more or less translates into unprotected.
When you go to your router and put a system in DMZ what you are doing is really telling the router to treat the machine as if it is on the other side of the router. This means the system has no protection at all. Every single port is opened to the machine and this of course allows hackers to get at the system and try hacking it.
Why do we want to put our system in DMZ if it is not protected anymore? Well the problem is that sometimes applications and games use ports for certain things and unless you know the port number you cannot get the specific portion of the application or game to work. In this case we have a headset we want to use while playing a game (this allows us to talk to our teammates which is useful when playing with other people). So we want to put the system in DMZ to see if that fixes the issue.
If it does fix the issue then we know that there are more ports that need to be opened and pointed to our system. If it does not fix the problem then we know the issue is related to the other people not having the correct ports open on their systems.
If DMZ fixes the issue then I would suggest doing more research and find out what other ports need to be opened. I would not suggest using DMZ all the time but if you cannot figure out what ports then just put your system in DMZ while you need it to run the application or game and then take it out of DMZ when you are done.