Kanchi and Ken mentioned basically the same.

Bottom line, if they believe they can tell you what holes to pry into 
your firewall, they need to be hit with the clue stick.
It's your prerogative to choose whatever port number you support for 
incoming HTTP. If you have set up your S/W to listen on 
http://your.company.com:8081/dumpyourAS2here, then that's what you tell 
them to send it to. If they choose to listen on 
http:/big.corp.ca:ZZ/AS2listener, where ZZ is one of those five port 
numbers, that's fine, too. If they tell you they'll be connecting from 
any of those five port numbers to your listener, you just say 'fine, I'm 
not bothered with your client port number, anything 1-65something will 
do, I'll just open up that IP number you're sending from".
But, if they say "you must listen on ports like ZZ", you just need to 
tell them "sorry, they're already in use, please find a n AS2 software 
supplier that will allow you to use whatever port I tell you to send to".
Of course, business relationship may prevent you from doing that, and 
you may have to resort to port mapping (Apache will do that, Tomcat as 
well, and many more, including routers/firewalls). But OTOH, why should 
you and all your fellow partners to this big corp pay for their 
stupidity? (I know, because they're big).

Earl Wertheimer wrote:
> Gait
>
>   
>> what's the problem? They are going to listen for HTTP connections on 80, 
>> 2080, 4080, 5080 & 9080, you just pick one or
>> two depending on how many you can configure.
>> As for HTTP connections to your software, you tell them on what port 
>> you're listening.
>> Normally, the sending party has no control over what port they're 
>> connecting from, and filtering based on client port number is a bad idea.
>>     
>
> They are specifying 5 Outbound ports.  No others.  That means that I have to 
> be 
> able to listen on multiple ports...  Or redirect their port to the port 
> already 
> setup for incoming.
>
> They don't care where I'm listening, as long it's one of their 5 choices.
>
> I can send on any port ;-)
>
> Earl Wertheimer
> [EMAIL PROTECTED]
> http://www.spe-edi.com
>
>
>   


[Non-text portions of this message have been removed]



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