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:
- Run the basic EPICS utilities from EPICS base:
- 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.
From: firstname.lastname@example.org [mailto:email@example.com] On Behalf Of Nicolas Strauss
Sent: Thursday, October 09, 2014 9:45 AM
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!