Re: Ports to block to limit the use of Client access Data transfer Facility -- MIDRANGE-L

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To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Subject: Re: Ports to block to limit the use of Client access Data transfer Facility
From: James Rich <james@xxxxxxxxxxx>
Date: Mon, 23 May 2005 12:53:02 -0600 (MDT)
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On Mon, 23 May 2005, John Candidi wrote:

Does anyone know which port on this list: (you'l have to paste the 2nd line to the end of the address on the first line to get the correct site)
http://www-912.ibm.com/s_dir/slkbase.nsf/1ac66549a21402188625680b0002037e/ac
c12fda96496e4b8625668f007ab75f?OpenDocument&Highlight=0,firewall
Needs to be blocked to limit the use of data transfer functionality or even
how to limit by user profile on the iSeries.

I think if you use just ports 23 and 449 CA will still work, but not do data transfer. But perhaps a simpler solution is to not use client access? Other emulators use fewer ports, run faster, and use fewer resources. Some even have very agreeable licenses (i.e. GPL).

James Rich

It's not the software that's free; it's you.
	- billyskank on Groklaw

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Follow-Ups:

Re: Ports to block to limit the use of Client access Data transfer Facility , rob

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