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<== Date ==> <== Thread ==>

Subject: Re: MCA and WAN connection
From: Maren Purves <m.purves@jach.hawaii.edu>
To: tech-talk@aps.anl.gov
Date: Thu, 09 Oct 2014 10:16:00 -1000
Hi both,

if whoever is administering the firewall knows what they're doing
they can just let certain ports through. Our sysadmins do that
here.

HTH,
Maren

On 10/09/14 09:28, Mark Rivers wrote:
Hi Nicholas,

If the server in the US is really not blocked by a firewall then you
should be able to do the following on your client machine in Germany:

- Set the environment variable EPICS_CA_ADDR_LIST to include the IP
address of the server in the US

- You may also need to change some timing parameters.  Read the section
called Configuration  in this document:

http://www.aps.anl.gov/epics/base/R3-14/8-docs/CAref.html

- Run the basic EPICS utilities from EPICS base:

   cainfo ‘pvname’

   getget ‘pvname’

- Launch your MCA client

As Lewis said this would be a dangerous configuration to have the server
not behind a firewall, since anyone could access it.

Mark

From: tech-talk-bounces@aps.anl.gov
[mailto:tech-talk-bounces@aps.anl.gov] On Behalf Of Nicolas Strauss

Sent: Thursday, October 09, 2014 9:45 AM

To: tech-talk@aps.anl.gov

Subject: MCA and WAN connection

Dear EPICS support,

I'm trying to access a channel with a PV from a server (located in the
USA and me sitting in Germany) with MCA for Matlab.

For this I'm trying     CH1=mcaopen('pvname')    but without success.

The question for me is, if the reason for this is the firewall of the
server (but should be cutoff) or if I have to add the specific IP of the
server to any file? (library)

Probably problems in the different subnets?

What/where is the parameter which has to be changed?

Thank you for responding my question!

Nicolas



References:
MCA and WAN connection Nicolas Strauss
RE: MCA and WAN connection Mark Rivers

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