Experimental Physics and
Industrial Control System

Gabriel Fedel via Tech-talk <tech-talk at aps.anl.gov> · Mon, 24 Feb 2020 17:32:54 +0100

Hi all,

I'm doing some tests with firewalld configuration, using yours examples,

but I think they will not work if there are more than 1 IOC running on

same machine, right?

Because the port for the other IOCs to transfer data will be other then

the 5064/5065 for CA (and 5076/5077 for PVAccess).

Is my understanding correct?

Is there some alternative for these cases?

Best Regards
On 2/24/20 1:27 PM, Jörn Dreyer via Tech-talk wrote:

Hi,

I have the following content in an XML file under

/etc/firewalld/services/EPICSChannelAccess.xml

<?xml version="1.0" encoding="utf-8"?>
<service>
  <short>EPICS Channel Access service</short>
  <port port="ca-1" protocol="tcp"/>
  <port port="ca-1" protocol="udp"/>
  <port port="ca-2" protocol="tcp"/>
  <port port="ca-2" protocol="udp"/>
  <source-port port="ca-1" protocol="tcp"/>
  <source-port port="ca-1" protocol="udp"/>
  <source-port port="ca-2" protocol="tcp"/>
  <source-port port="ca-2" protocol="udp"/>
</service>

But this requres a link o be set on my system from /usr/etc/services

to /etc/services. Somehow firewalld under OpenSuSE Tumbleweed does not

yet honor the new path to this file. But if you replace the symbolic

port names to the corresponding numbers it also works.

Regards,

Jörn

Am Montag, 24. Februar 2020, 14:09:57 CET schrieb Goetz Pfeiffer via

Tech-talk:

 > On 4/3/19 11:51 AM, Dirk Zimoch via Tech-talk wrote:

 > > Hi

 > >

 > > Does anyone already have a firewalld configuration to allow Channel

 > > Access? I.e. something like a /usr/lib/firewalld/services/epics.xml

file?

 > >

 > > Dirk

 >

 > Hello Dirk,

 >

 > I just struggled with firewalld in order to make EPICS clients and

servers

 > work and I found this solution for the command line:

 >

 > Settings for EPICS clients:

 >

 >   firewall-cmd --add-rich-rule="rule source-port port=5064 protocol=tcp

 > accept" firewall-cmd --add-rich-rule="rule source-port port=5064

 > protocol=udp accept" firewall-cmd --add-rich-rule="rule source-port

 > port=5065 protocol=tcp accept" firewall-cmd --add-rich-rule="rule

 > source-port port=5065 protocol=udp accept"

 >

 > Additional settings for EPICS servers:

 >

 >   firewall-cmd --add-rich-rule="rule port port=5064 protocol=tcp accept"

 >   firewall-cmd --add-rich-rule="rule port port=5064 protocol=udp accept"

 >   firewall-cmd --add-rich-rule="rule port port=5065 protocol=tcp accept"

 >   firewall-cmd --add-rich-rule="rule port port=5065 protocol=udp accept"

 >

 > Make changes permanent:

 >

 >   firewall-cmd --runtime-to-permanent

 >

 > Greetings

 >

 >   Goetz

--
Gabriel Fedel

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System