[ANSS-netops] Operating multiple reftek recorders behind a single static IP.

Wed Jul 6 02:17:26 UTC 2011

Steve

Just use a netgear wgr614 dsl router, it is about 50.00 and it is running
open source software.  Using port forwarding you can forward tcpip ports to
different IP's ie

outside:3000    ------->   192.168.1.1:80  or whatever port you want
outside:3002    ------->   192.168.1.2:80
outside:3003    ------->   192.168.1.3:80

Then just point your software to that port. If you need other ports
you could map those also. I have had no issues with the netgears unlike the
linksys units and since you can download the source code for these units,
you could write your own software to run internally.

You should not have any issues UNLESS the refteks contact the home server.
If so they Will all look like they are coming from the same address.  The
only way to fix that would be that each reftek would have to send its data
via a separate tcpip port then configure the server to listen on those
ports.

If you need me to clarify just call me at slu.

Bob
On Tue, Jul 5, 2011 at 3:39 PM, Antonio Sanchez <A.Sanchez at reftek.com>wrote:

> Dear Friends,
>
> Any of the routers listed will do,  I just wanted to add a little bit
> more on the NAPT non NAPT routers.
>
> The key here is that for the REF TEK's the destination port for data
> will always be 2543 but the source port created is different for each
> one of them and that is something the router will handle automatically.
> That port will remain open to receive acknowledgements and other details
> for a certain period of time, so that answers the question of several
> 130's behind the same DSL IP,  no need to do anything,  just plug them
> in the ports with the defined LAN addresses and ready to use.
>
> For command and control of the REF TEK's you could use RTCC but will
> have to do an RTPD connection,  not a direct connection.
>
> If you want to have command and control of the REF TEK's with a direct
> connection, you will have to create several NAPT rules for each one of
> them at different ports,  same for ftp.
>
> Thanks a lot
>
> Antonio Sanchez
> REF TEK Customer Support
> http://www.reftek.com
> Tel : 214-440-1271
>
>
>
>
>
> -----Original Message-----
> From: anss-netops-bounces at geohazards.usgs.gov
> [mailto:anss-netops-bounces at geohazards.usgs.gov] On Behalf Of Dave
> Drobeck
> Sent: Tuesday, July 05, 2011 3:26 PM
> To: sbrewer1 at memphis.edu
> Cc: anss-netops at geohazards.usgs.gov
> Subject: Re: [ANSS-netops] Operating multiple reftek recorders behind a
> single static IP.
>
> Hi Steve,
> We have multiple locations with multiple dataloggers behind one IP -
> just not multiple Refteks for the reason you state - everything is UDP
> 2543.  Need somebody smarter than me to figure that one out.  The router
>
> we use for port translation is
>
> http://www.cdwg.com/shop/products/Cisco-RV042-4-port-10-100-VPN-Router-D
> ual-WAN/654632.aspx
>
> it's been very reliable for us, and listed here as $170.  If you need
> more physical ports a switch can be inserted.
>
> Dave
>
> Stephen Brewer wrote:
> > Hello, I would like to ask how others may have dealt with this.
> >
> > We have a situation which calls for the operation of several refteks,
> > behind a single static IP, DSL service. It is my understanding that
> the
> > port numbers used for communication with the refteks, are not
> > configurable. Is this really the case? If communication port numbers
> > could be changed, the problem would be solved.
> >
> > Another possibility would be to place some sort of router/firewall,
> > capable of port translation, between the DSL modem and refteks.
> > Has anyone ever done anything like this?
> >
> > We have some small experience here, with the CISCO ASA5505 (Adaptable
> > Security Appliance). This is a small, 8-port router/firewall, that I
> > think would be capable of doing the port translation. The cost of such
> a
> > unit though is about $600. Is anyone aware of a cheaper, more
> "consumer"
> > grade product that could do this?
> >
> > A related question. Are the port numbers used by the various outside
> > programs that talk to the reftek configurable?
> > If not, then a similar firewall/router would be required at both ends.
> >
> > Any thoughts or suggestions are appreciated.
> >
> > thanks, steve.
> >
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-- 
Robert Wurth
AV Computer Tech
Department of Atmospheric and Earth Sciences
St Louis University
205 O'Neil Hall
3642 Lindell Blvd.
St. Louis, MO 63108, USA
Phone (314) 977-3137, 314-977-3135
 Fax (314) 977-3117
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