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DS Misc > Cant access with 2 NDS over one AP at the same time

#77513 - Rudi Rastelli - Sat Apr 01, 2006 12:09 pm

Can't access with 2 NDS over one AP at the same time !

The 1st NDS connect correctly, but with the 2.NDS i get an Error (80340).
The 2 NDS are connected to my Router with different MAC-Adresses. (MAC-Filter is disabled)
I also tried to connect 2nd DS to my 2nd AP with the same result.
It also doesnt matter which one of my DS is the 1st oder 2nd...

Error-Discription seems not to be very helpful saying something about firewall !?
Do i have to open another port for 2nd DS ? And if YES... which one ?


Regards

Rudi

#77515 - shaz - Sat Apr 01, 2006 12:59 pm

I try to connect both ds's to wfc but only one can connect. Proberly some security for cheating.
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#77516 - ?hr - Sat Apr 01, 2006 1:02 pm

i hope the second ds uses a other ip than the first one???

#77523 - chishm - Sat Apr 01, 2006 2:42 pm

This may be a result of NAT - the way you can have one IP address from your ISP but still have multiple computers connect to the internet from your end.
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#77532 - Rudi Rastelli - Sat Apr 01, 2006 4:07 pm

?hr GmbH wrote:
i hope the second ds uses a other ip than the first one???


Yes i use different IPs for my DSes

#77540 - tepples - Sat Apr 01, 2006 4:39 pm

But the access point is usually a gateway that performs network address translation. The machines have different addresses on the LAN but the same address on the AP, so the AP doesn't know which DS to route incoming packets to.
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#77568 - m2pt5 - Sat Apr 01, 2006 7:34 pm

tepples wrote:
But the access point is usually a gateway that performs network address translation. The machines have different addresses on the LAN but the same address on the AP, so the AP doesn't know which DS to route incoming packets to.

If that were the case, then you couldn't have multiple computers behind the same router, and NAT would be useless. It uses the MAC address (which is attached to every packet) to know where to send the packets.
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#77570 - Mighty Max - Sat Apr 01, 2006 7:46 pm

m2pt5 wrote:
tepples wrote:
But the access point is usually a gateway that performs network address translation. The machines have different addresses on the LAN but the same address on the AP, so the AP doesn't know which DS to route incoming packets to.

If that were the case, then you couldn't have multipe computers behind the same router, and NAT would be useless. It uses the MAC address (which is attached to every packet) to know where to send the packets.


Actually it IS useless if the local ports are the same on both machine and NAT has no way to identify to which connection the incoming packets belong.

i.e.:

A "Port A <-> Port B" packet comes in, the NAT knows that this combination was last used from PC #1 , so it translates it to PC #1
A "Port A <-> Port C" packet comes in, Nat knows PC #2 used it, so it sends to PC #2
PC #2 opens a connection "Port A <-> Port B",
Now there are 2 choices:
1. NAT remembers this and gives all packets of this type the target = PC #2. PC #1 loses its connection.
2. NAT refuses this new connection, PC #2 can not connect, PC #1 still operates this connection.
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#77595 - m2pt5 - Sat Apr 01, 2006 10:22 pm

Isn't that why the DS uses a range of ports?

Also, wouldn't that render the wifi hotspots at McDonalds useless for more than one person?
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#77606 - Flood_of_SYNs - Sat Apr 01, 2006 11:00 pm

Found this short listing of WFC ports.

http://discuss.futuremark.com/forum/showflat.pl?Cat=&Board=gamingconsole&Number=5705779&page=0&view=collapsed&sb=5&o=0&fpart=24#Post5749665

NintendoWFC wrote:
TCP: Allow traffic to all destinations on ports: 28910,29900,29901, and 29920
UDP: Allow all traffic to all destinations. (Necessary for peer-to-peer connections and game play)

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#77965 - Rudi Rastelli - Tue Apr 04, 2006 7:35 am

Problem solved !

There is an option called "Allow WLAN-Clients to communicate" in my AP.
If I check this all is working fine !

My Router is a FRITZBOX 7050 WLAN FON ! (very common in Germany)


Thx... for your help !

Rudi