[AG-TECH] ANL bridge machine and port info?

Thomas D. Uram turam at mcs.anl.gov
Mon Oct 31 12:05:56 CST 2005


Derek:

See this ag-tech mail from Namgon, who wrote the umtp server:

http://www.mcs.anl.gov/web-mail-archive/lists/ag-tech/2005/09/msg00133.html

We do need to shake bugs out, so any feedback you can provide from your trials 
would be helpful.

Tom


On 10/31/05 7:30 AM, Derek Piper wrote:
> 
>     Hi,
> 
>     How would I go about running the server on its own? The binary that 
> comes with the AGConnector package complains about being run incorrectly 
> but doesn't give any useful information. I'm having trouble finding a 
> UMTP server that I can run on a central machine. I'm modifying the 
> AGConnector python script to have this machine as the default, so people 
> should be able to run it without configuring a new server.
> 
>     Derek
> 
> Thomas D. Uram wrote:
> 
>> Hi Derek:
>>
>> Comments inline...
>>
>> On 10/27/05 8:55 AM, Derek Piper wrote:
>>
>>>
>>>     Hi Tom,
>>>
>>>     I tried playing with AGConnector, does it have to go to just your 
>>> server there? Is it possible to run a server on a local machine and 
>>> have other clients connect to it? Like the local bridge, but simpler? 
>>
>>
>>
>> The default server is the one here at ANL (umtp.mcs.anl.gov).  
>> AGConnector
>> does allow you to specify which server to use, so yes:  if you have a
>> UMTP server running, you can specify it in AGConnector and it will be
>> used instead.  In fact, in the future I'd like to see umtp servers 
>> proliferate
>> and be discoverable.
>>
>> I also
>>
>>> have a question about how it works too, in trying to test it on two 
>>> machines that are on a LAN (and so have full visibility of each other 
>>> wrt multicast) I didn't notice any difference - should I? ..
>>
>>
>>
>> UMTP is a solution for people who have no multicast, and it actually
>> shuts down if it receives a packet from itself over multicast (see
>> the ietf UMTP draft).
>>
>>  I'm trying
>>
>>> to test it so I know what I'm doing with it to help a remote site 
>>> with their AG connection. Actually, I'm wanting it for helping 
>>> someone at Argonne / University of Chicago combat the draconian 
>>> firewalling :)
>>>
>>>     Derek
>>>
>>> Thomas D. Uram wrote:
>>>
>>>> I'd recommend that you look at the AGConnector shared app.  It does 
>>>> everything over
>>>> a single, fixed port (8010) to a server here at ANL 
>>>> (umtp.mcs.anl.gov).  No port range
>>>> needed, and coverage for every venue, not just those that people 
>>>> chose to bridge.
>>>>
>>>> Tom
>>>>
>>>>
>>>> On 10/26/05 12:36 PM, Julia Mullen wrote:
>>>>
>>>>> Hi -
>>>>>
>>>>> I'm trying to get the okay to open ports so that I can attend the Town
>>>>> Halls, and any
>>>>> other events on the ANL venue server, so I need some information re:
>>>>> the bridge server IP and ports.  Is there a document, or easy way to
>>>>> get the list of bridged ANL venues, and the
>>>>> bridge IP address, as well as the range of ports for the bridge. . .
>>>>>
>>>>> yup, a continuation of the Security Office's questions.
>>>>>
>>>>> Thanks -
>>>>>
>>>>>   Julie
>>>>>
>>>>>
>>>>
>>>>
>>>
>>
>>
> 




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