[arin-ppml] inevitability of NAT?

Scott Helms khelms at zcorum.com
Thu Feb 10 10:57:07 EST 2011


     The point was the game does _not_ require UPnP nor any port 
forwarding.  However, that is required for voice communication.  I don't 
personally use PSN for voice communications hence I haven't run into 
that problem despite being in NAT category 3 by the PSN definition (I 
have UPnP turned off and no forwarding for my PS3).

On 2/10/2011 10:51 AM, Jack Bates wrote:
> I don't have to look further down.
> If port forwarding is required for an application to work (often 
> handled by uPNP), then LSN will break the communication. PS3 has 
> required such functionality right along with the xbox and Steam.
> There are many games out there that also host on a specific end node 
> automatically. They are able to accomplish this due to uPNP and 
> automated port forwarding. They will break in LSN environments.
> Jack (not gonna be the one to tell his son that he'll just have to 
> deal with it)
> On 2/10/2011 8:47 AM, Scott Helms wrote:
>> Jack,
>> If you look further down you'll see that the OP's problem was bad
>> firmware on a $12 router. Having said that there are some ports that are
>> needed for voice chat which does seem to have a peer to peer component.
>> I also run gaming servers for my own enjoyment (TF2 currently and many
>> others in the past) and the days of hosting your own $fps_game server
>> are generally past and very much outside of the public norm even for PC
>> gaming. While you can do that the vast majority of the gaming hours
>> today are spent on servers hosted by companies like Nuclear Fallot,
>> Branzone, and a host of others. I do miss the days of Quake but home
>> hosted game servers are a dying (but not completely dead) breed.
>> On 2/9/2011 6:02 PM, Jack Bates wrote:
>>> On 2/9/2011 4:53 PM, Scott Helms wrote:
>>>> Playstation Network works, by design, flawlessly through NAT and is
>>>> _not_ a peer to peer application. All traffic goes to the PSN servers
>>>> and then to clients. Go2MyPC is designed for NAT and in fact one could
>>>> argue that it wouldn't exist if NAT weren't wide spread.
>>> Errr, are you sure?
>>> http://www.absolute-playstation.com/playstation-network/expert-playstation-3-hardware-accessory-help-playstation3-ps3-console/10976-nat-3-nat-2-a.html 
>>> "Re: nat 3 to nat 2
>>> I tried all the router suggestions and still got nat 3. after much
>>> frustration I called my ISP. Do this. Ask if your IP address is
>>> private or public. My ISP sets u up as private. I had them change it
>>> to public...BINGO Nat 2. Hope this helps."
>>> If you read above, it appears that his ISP ran NAT444 normally, which
>>> the PS3 categorizes as nat 3, which means he can't reach COD. Dude,
>>> customers MUST reach COD. :)
>>> Jack

Scott Helms
Vice President of Technology
ISP Alliance, Inc. DBA ZCorum
(678) 507-5000

More information about the ARIN-PPML mailing list