[HECnet] Connecting to HECnet from DEC Legacy 19-20 Oct

Sun Sep 29 10:25:14 PDT 2013

Rob,

This is what I have: 

At the DEC Legacy side I have a Draytek router with a USB data stick plugged in the back. As there is no ADSL connection it fails over to the datastick. I have NAT setup in the router to forward 4711 traffic to a laptop running Johnny's bridge. The bridge is configured to link with my home static IP address bridge running off hecnet.eu.

At the home side I have my Mikrotik configured to forward 4711 traffic to the HP microserver running Johnny's bridge. This is configured both with the standard link to psilo and with the dynamic IP address of the USB data stick. 

When I first get the stick up and running I ssh into the HP microserver, edit bridge.conf with the IP address of the USB datastick and restart the bridge on both ends. If the IP address changes during the day I repeat this process. IIRC at the last DEC Legacy it happened a few times, primarily when the mobile signal dropped off rather than anything that looked more systematic from the carrier's point of view.

I'm trying to repeat this set up before this DEC Legacy at home. I've also done this in the past using the stick plugged into an ubuntu laptop and iptables, but I always find there are too many demons there (although I'm a lot more confident having gone through the pain with the Mikotik which uses the same mechanism).

I got distracted yesterday when I accidently overwrote the SRM console of a PICMG industrial Alpha I was looking to get OpenVMS installed on with AlphaBIOS (the Windows NT boot firmware). Apparently on these machines you can only have one or other of SRM or AlphaBios but not both. I was then left with a machine that failed on boot till I changed the CR2302 battery. Then it would boot but wouldn't load the firmware update from CDROM (to get it back to SRM) because it said the ROM was protected. I wrote a floppy with the firmware update which would then boot to the SRM update console, but that was hanging at erase.

I decided to call it a night after that!

Regards, Mark.

On 29/09/2013 09:00, Robert Jarratt wrote:
I was going to have a go at this today, but thinking about it I am not sure this can work at DEC Legacy or even here at home because it would always be behind NAT. Can we make this work with NAT? What ports would you need?

Nevertheless I have it configured with DECnet and I have entered the two SNMP commands below (I used the    public    community name, not sure if that is right because I know very little about SNMP).

The information you wanted was:

Your external IP Addres: 86.4.69.74
Your external FQDN: jarratt.dyndns.org
Is this a dynamic IP: yes
The DECnet area at this location: 5
The source interface on your router: Ethernet0
The email address you want updates sent to: rob at jarratt.me.uk (not sure if this is what you mean, this goes to my regular email address, are we talking about some email capability in the router?)
The snmp community from the above directions: public

I hope that is the information you need.

Regards

Rob

From: Jarratt RMA [mailto:robert.jarratt at ntlworld.com]    Sent: 24 September 2013 21:14   To: HECnet   Subject: Re: [HECnet] Connecting to HECnet from DEC Legacy 19-20 Oct

I won't be home until the end of the week, I will try it this weekend.

Regards

Rob

On 24 September 2013 21:03, Brian Hechinger <wonko at 4amlunch.net> wrote:
Ok, 5 lines. :)      first you need to enable DECnet routing:      decnet routing X.Y (where X.Y is the DECnet address you want to give it)   decnet node-type area      Then you need to add this to the interface that talks to your DECnet LAN   segment:      decnet cost 10      Then you need to allow my config tool to talk to your router:      access-list 10 permit 37.59.44.141   snmp-server community <community name> RW 10      Then you just need to get me all that info I asked for and we should be   good.      The machine running the config tool is down right now so I'm in no   hurry. :)      -brian
   On Mon, Sep 23, 2013 at 11:37:23PM +0100, Jarratt RMA wrote:   > I have no idea how to set up GRE, but I believe the DECbrouter I have can   > do it, does anyone have any pointers on how to set it up? I will also want   > to add GRE to my user mode router when I get chance, but for DEC Legacy   > using the brouter might be nice. Once I can get it (the brouter) working   > let me know how to update your db with the IP address. Question though,   > does the IP address change have to be made manually or could it be   > automatic?   >   > Thanks   >   > Rob   >   >   > On 22 September 2013 23:32, Brian Hechinger <wonko at 4amlunch.net> wrote:   >   > > If you want to use the GRE tunnels I can give you access to the db to   > > update your IP.   > >   > > -brian   > >   > > On Sep 22, 2013, at 16:18, "Robert Jarratt" <robert.jarratt at ntlworld.com>   > > wrote:   > >   > > > I don't have multinet and I have never installed it. What protocol does   > > it   > > > use under the covers, is it something proprietary to multinet? Could I   > > get   > > > the DECbrouter I bought recently to interoperate with your side? If it is   > > > not too hard I could try implementing Multinet interop in my user mode   > > > router.   > > >   > > >   > > >   > > > Regards   > > >   > > >   > > >   > > > Rob   > > >   > > >   > > >   > > > From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On   > > Behalf   > > > Of Steve Davidson   > > > Sent: 22 September 2013 11:43   > > > To: hecnet at Update.UU.SE   > > > Subject: RE: [HECnet] Connecting to HECnet from DEC Legacy 19-20 Oct   > > >   > > >   > > >   > > > If you decide to use Multinet and have access to a dynamic DNS name,   > > then I   > > > can link SG1:: to it via the SW at this end.   It is completely automated.   > > > If we can manage to install Multinet on GORVAX:: then the links would be   > > > even faster.   > > >   > > >   > > >   > > > -Steve   > > >   > > >   > > >   > > >   _____   > > >   > > > From: owner-hecnet at Update.UU.SE on behalf of Mark Wickens   > > > Sent: Sat 9/21/2013 16:18   > > > To: hecnet at Update.UU.SE   > > > Subject: Re: [HECnet] Connecting to HECnet from DEC Legacy 19-20 Oct   > > >   > > > On 21/09/2013 21:12, Robert Jarratt wrote:   > > >   > > > I am hoping to connect to HECnet from the DEC Legacy event in October,   > > > hopefully connecting a few interesting systems to HECnet and allowing   > > > attendees to explore HECnet.   > > >   > > >   > > >   > > > I would be using a USB 3G device to do this, so I wouldn't know my IP   > > until   > > > the day itself. Is there anyone with a bridge on HECnet who would be   > > > available during UK daytime on those days to configure their bridge to   > > peer   > > > with me? There may be more than one change of IP address over the course   > > of   > > > the weekend though.   > > >   > > >   > > >   > > > Are there any other options?   > > >   > > >   > > >   > > > Thanks   > > >   > > >   > > >   > > > Rob   > > >   > > >   > > >   > > > Rob,   > > >   > > > Obviously I will have my home bridge going, so maybe we can keep this   > > > in-house with a bit of experimentation? I think this is maybe what I did   > > > last time, I really can't remember but it makes a lot of sense and it   > > does   > > > shake my memory a bit!   > > >   > > > Mark.   > > >   > > > <winmail.dat>   > >

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