e4200 settings that work for me.
http://picpaste.com/NAT_Loop_Back_e4220-FGNLyJLJ.JPG

http://picpaste.com/NAT_loop_back_port_range_triggering-LZJD67rg.JPG

each hosts file 
192.168.x.x my.dyndns.domain

These might not be the best. I rely on each computer to be firewall protected 
and leave the routers open to prevent firewall fighting.

Thank you for the responses. 





>________________________________
> From: Gary Beck <[email protected]>
>To: Nicky Perian <[email protected]>; [email protected] 
>Sent: Sunday, August 12, 2012 11:55 AM
>Subject: Re: [Opensim-users] Region handshake does not complete
> 
>
>The CISCO 'NAT loop back' item is 'Filter Internet 
NAT Redirection.'   I'm not at my usual location so I can't check 
how it's set on my e3200.  I think un-checking that option (the 
default) allows the redirection of your external IP back to your 
local LAN.  It's one of the firewall settings.
> 
>----- Original Message ----- 
>>From: Nicky  Perian 
>>To: Gary Beck ; [email protected] 
>>Sent: Sunday, August 12, 2012 11:40  AM
>>Subject: Re: [Opensim-users] Region  handshake does not complete
>>
>>
>>Thank  you for the reply.
>>I  have a cisco e4200. It has settings for port forward, triggering, DMZ, and 
>>a  means to place a gaming app at a specific priority.
>>
>>
>>But,it has no mention of NAT loop back. I  assume that NAT loop back is just 
>>another name for one of the other port  handling features mentioned above.
>>
>>
>>I have searched google and not found how to set NAT  loop back. Actually, 
>>about the only mention to pop up is OS  wiki.
>>
>>
>>How is NAT loop back set up for any cisco  router?
>>
>>
>>Thanks,
>>
>>
>>Nicky
>>
>>
>>  
>>
>>
>>
>>>________________________________
>>> From: Gary Beck  <[email protected]>
>>>To: Nicky Perian  <[email protected]>; [email protected] 
>>>Sent: Saturday, August 11, 2012 9:30  PM
>>>Subject: Re:  [Opensim-users] Region handshake does not complete
>>>
>>>
>>> 
>>>Nicky,
>>>At handshake time the opensim server sends the  viewer the resolved IP 
>>>address of the region being connected to.  I'm  assuming that would be your 
>>>dyndns domain name + a port number.   However the server send the resolved 
>>>address, not the domain name.  So  the viewer will be getting the external 
>>>IP + port number.  This can  work if you local network router has NAT 
>>>loopback enabled.  If not the  viewer attempts to use the address and 
>>>doesn't reach the server.  The  host file settings would be effective if at 
>>>handshake time the server sent  domain names to be resolved but it doesn't.
>>>Hope this helps. 
>>>- Gary Beck
>>>----- Original Message ----- 
>>>>From: Nicky  Perian 
>>>>To: [email protected] 
>>>>Sent: Saturday, August 11, 2012 9:57  PM
>>>>Subject: [Opensim-users] Region  handshake does not complete
>>>>
>>>>
>>>>I am running a diva under win 7 64 bit. Same machine as several linux  VMs. 
>>>>I want to connect each VM to the opensim sever. The VM's network  cards are 
>>>>set to receive a DHCP ip from the router and that works. I can  connect to 
>>>>any external grid (SL & OS) from the VM's. I have a dyndns  domain name 
>>>>assigned to the cable company external IP.
>>>>
>>>>
>>>>The hosts file in the VM is set to server's lan ip and the dyndns  domain 
>>>>name. Ping to the domain wraps to the server IP.
>>>>
>>>>
>>>>At viewer start I receive the splash from the server.
>>>>
>>>>
>>>>The login will not get past establishing the region handshake.
>>>>
>>>>
>>>>Hints please.
>>>>
>>>>
>>>>Nicky
>>>>________________________________
>>>> _______________________________________________
>>>>Opensim-users 
      mailing 
      list
>>>>[email protected]
>>>>https://lists.berlios.de/mailman/listinfo/opensim-users
>>>
>>>
>
>
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