[Opensim-users] external computers cannot login

[Impalah Shenzhou]

Yes, seems a Loopback problem :-(

The only solution could be to change the router... or maybe updating the
firmaware of the router, but I can't help you with it (firmware updating
scares me) :-(




2010/6/29 Pryderi <pryderi.mail at gmail.com>

> Thanks Impalah for your very clear answer,
> 1) DHCP is off;
> 2)With xampp web server it rederects correctly to my computer, so i guess
> it's correct.
> 3)As i wrote up, the webserver works.
>
>
> Without this line:
>
> 192.168.0.2      http://pryderi.dyndns.org <http://myaddress.dyndns.org/>
>
> in windows/system32/drivers/etc/hosts, it works only from external
> computer, with that: only from internal.
>
> And if I use the http://pryderi.dyndns.org <http://myaddress.dyndns.org/>in a browser, without that line, of course it doesn't load.... i guess it is
> this NAT loopback.
>
>
>
> 2010/6/28 Impalah Shenzhou <impalah at gmail.com>
>
> It seems a NAT Loopback problem with your router:
>> http://opensimulator.org/wiki/NAT_Loopback_Routers (big problem) or a bad
>> DMZ/NAT configuration (no problem).
>>
>> First: turn off DHCP, you will need a static IP for the computer on your
>> LAN. For example, if you have 3 computers, and the IP address of the router
>> is 192.168.0.1, use the 192.168.0.2, 3 and 4 for the computers.
>>
>> Second: You need to associate the internal ip address of the computer
>> acting as opensim (i.e. 192.168.0.3) to the external address of your router
>> (i.e. 72.11.7.23). This is the one which DynDNS will autodetect.
>>
>> The "association" can be done in the router using NAT (Network address
>> translator, will require both ip addresses and ports) or, more simple, using
>> some DMZ option, which will only require a local ip address.
>>
>> Third: how to test... well, making a ping from the outside to your DynDNS,
>> could be a false positive, your router could answer and not your computer
>> (this depends on the router...). I prefer to use a web server on the
>> computer and try to access from a navigator (i.e.
>> http://myaddress.dyndns.org).
>>
>> At this point anyone should be able to access from the outside, using your
>> dyndns address.
>>
>> The NAT loopback problem means that everyone from the outside can access
>> to you computer but you, from your local network, don't.
>>
>> I hope this helps
>>
>>
>> 2010/6/28 Spacefriends <drwhiet at spacefriends.de>
>>
>> DynDNS  is a service to have a FQD name Name "at Home "
>>>
>>> Best regards
>>>
>>> Am 28.06.2010 um 07:57 schrieb Dolma Dollinger <
>>> dolma.dollinger at gmail.com>:
>>>
>>> -DYNDNS URL- sounds to me like no legal DNS name syntax.
>>>
>>> On Sun, Jun 27, 2010 at 10:03 AM, Pryderi < <pryderi.mail at gmail.com>
>>> pryderi.mail at gmail.com> wrote:
>>>
>>>> Hi all,
>>>> I am sorry to bother you again, but i have not solved yet.
>>>> When somebody attempts to log in in my simulator the log in process
>>>> stops at sending response to client. I guess the server sends and incorrect
>>>> address/port to client.
>>>> Then the client stops log in for timeout.
>>>> I am running OpenSim on win 7, with MySQL, I opened the firewall ports
>>>> and in  windows/system32/drivers/etc/hosts i  added this:
>>>>
>>>> 192.168.0.2       -DYNDNS URL-
>>>>
>>>> If i don't add that I have the problem of incorrect response. The
>>>> internal IP is not dynamic.
>>>>
>>>> In the region.ini:
>>>>
>>>> InternalAddress = 0.0.0.0
>>>> InternalPort = 9003
>>>> AllowAlternatePorts = False
>>>> ExternalHostName = -DYNDNS URL-
>>>>
>>>> Many thanks in advance,
>>>> Vittorio
>>>>
>>>>
>>>>
>>>>
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