Re: gateway: strange configuration

["Martin L. Smith" <mls@aps.anl.gov>]

Hi Pierrick,

I would think that on the gateway you should have your sip = 111.11.11.11
and you cip = broadcast IP of your 222.22.22.22 network or perhaps just the
222.22.22.22 IP address itself. It is likely I would think that you do not
have a static public IP address so it is possible that sometime in the future
your IP address may get changed once the lease expires.

I think that your EPICS_CA_ADDR_LIST on your remote machine will likely be
the 222.22.22.22 IP. Then if you at least attempt to connect to a PV from
the gateway ... I usually use camonitor or some other tool that will keep
trying to connect. There should be a flag for getting a gateway report which
should be of the form $(GW_PRFIX):report1Flag which should generate a virtual
connection report and put it in gateway.report file located where you started
the gateway from.

From this file you should be able to see any connections to PVs on the gateway.
This should show you the PV name as well as who is connected to it and from
where.

Hope that this helps out.
Marty

On 02/20/13 15:33, Pierrick Hanlet wrote:
> Hi Ralph,
> Thanks for the response. I suppose that I'm being a bit thick, but I'm not able
> to understand
> your instructions. In starting the gateway, I added the flag "-debug 50". I
> cannot connect
> from my remote machine 333.33.33.33; I've attempted caget with hopes that the
> log file
> on the gateway machine will show some attempt to connect, but to no avail. If
> this is not
> what you mean, would you please be more specific?
> Thanks,
> Pierrick
>
>
> On 02/20/2013 11:27 AM, Ralph Lange wrote:
> > On 20.02.2013 18:09, Pierrick Hanlet wrote:
> > > Hi all,
> > > I'm running an epics gateway v2.0.4 on a linux box running SL with kernel
> > > 2.6.18 and is part of a LAN;
> > > my EPICS version is 3.14.11. We have established an external connection to
> > > this subnet with a DSL
> > > connection with a public IP address and an ethernet cable from the DSL modem.
> > > I have no name for
> > > this public IP address.
> > >
> > > So, my questions are:
> > > 1) How do I set up my gateway.access file?
> > > 2) On my remote node, how do I define my EPICS_CA_ADDR_LIST?
> > > 3) Can I even use an IP address in the access file?
> > >
> > > Let's say that my host computer running the gateway is 111.11.11.11, the
> > > public IP address is 222.22.22.22,
> > > and my remote machine on which I want the EPICS data is 333.33.33.33.
> > >
> > > I've tried a variety of things and I'm clearly missing something. On my other
> > > uses of the gateway, I don't
> > > have the intermediate hop over the AT&T provided public IP address.
> > > Thanks,
> > > Pierrick
> >
> > Hi Pierrick,
> >
> > I would say for the remote client
> > EPICS_CA_AUTO_ADDR_LIST=NO
> > EPICS_CA_NAME_SERVERS= 222.22.22.22
> >
> > On the gateway, I would turn up debugging, connect from the remote client, and
> > check what it provides as user and host. These will be the values to use in
> > the Access Security configuration.
> >
> > Good luck!
> > ~Ralph
>
> --
> "Whether you think you can or think you can't, either way, you are correct" --
> Henry Ford
> _______________________________________________________________
> *Pierrick Hanlet*
> IIT/Fermilab
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