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Security of network when one PC DMZ'd

  • 15-07-2009 7:55pm
    #1
    Damien360
    Registered Users, Registered Users 2 Posts: 6,782 ✭✭✭


    A simple question for the experts here.

    I have DMZ'd a PS3 on my network and use it to media share via tversity and windows media player to my laptop and home PC which are secure behind my router and have firewall software. Are my PC's now open to attack behind my router. Attacks on PS3 are unknown for now but can info be taken from ny PS3 which can be useful in any virus/hacker attack.

    Although the above situation is unlikely, am I safe having a device DMZ'd on my network while sharing files to other non-DMZ'd devices.

    Thanks


Comments

  • #2
    FruitLover
    Registered Users, Registered Users 2 Posts: 2,534 ✭✭✭FruitLover


    Assuming you've firewalled your internal network from your DMZ, a direct attack shouldn't be possible, but if the PS3 is accessible from outside, there's a possibility that your media files could get infected and your LAN hosts could potentially get infected by opening them.

    All theoretical, of course.

    What (if any) access is configured between your PS3 and the internet?


  • #3
    ntlbell
    Registered Users, Registered Users 2 Posts: 16,288 ✭✭✭✭ntlbell


    why is it in a dmz? I wish home router's didn't start using phrases like DMZ as it mixes up a lot of people's idea what a DMZ is and what it isn't

    if the PS3/PC etc are all on the same network there's no need for it to be in a "DMZ"

    The whole idea of a DMZ is to partition of nodes from other segments on a network not expose them to parts that shouldn't have access.


  • #4
    Damien360
    Registered Users, Registered Users 2 Posts: 6,782 ✭✭✭Damien360


    The media files that I share are photos and videos via tversity from laptop to PS3. The DMZ is not required for this access to work. I stream some youtube content also to the PS3. All files held on laptop and streamed to PS3. I do not use the PS3 browser function to the net. Laptop firewalled by router and firewall software loaded to it.

    The reason I have the PS3 in the DMZ is because of headset issues I am trying to resolve. I had all the ports forwarded to give me the access I wanted to PS3 online functionality but no headset sound. My netgear DG834g has PnP and is opening ports also but still no headset sound.

    To resolve the problem I dropped my PS3 in the DMZ for inbound traffic on a specific IP address on the lan. Mind you the problem remains and I am not sure if it is location specific (server) as I have some sound from UK users and french users but not much else. That is an issue for another forum.

    My question remains if I risk virus/trojan infection to my PC by having the PS3 in the DMZ.


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