44net

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3205 discussions

Re: [44net] Trouble creating a Gateway into 44net
by Rob Janssen 24 Mar '17

24 Mar '17

> I am sorry about my multitude of questions but sometimes I can read > things a million times and still not understand. > Would I have to use either ampr-ripd > <http://wiki.ampr.org/wiki/Ampr-ripd>, or rip44d > <http://wiki.ampr.org/wiki/Rip44d> on the server to forward the traffic > to my AMPRnet box? Would I have to use either ampr-ripd > <http://wiki.ampr.org/wiki/Ampr-ripd>, or rip44d > <http://wiki.ampr.org/wiki/Rip44d> to tell the server where to send the > AMPRnet traffic cumming from the box. Rip44 is not for forwarding. It is used to populate the routing table for the IPIP tunnel system. The forwarding is done by the kernel and is configured the usual way. I.e. forwarding is to be enabled in the kernel and the proper interfaces and subnets are added. You would be setting up the AMPR IPIP tunneling on your brother's computer (first ask if he agrees with that) and you get a subnet from your coordinator, e.g. a /28 network, where your brother's computer gets an AMPRnet address and your own computer gets another address in the same subnet, you set your brother's computer as the default gateway, and all AMPRnet traffic is forwarded via your brother's computer that will tunnel it over the IPIP network. The ampr-ripd running on your brother's computer will receive the AMPRnet RIP packets and maintain a routing table with about 400 routes, plus it has the locally attached AMPRnet subnet that was assigned to you. All AMPRnet traffic is forwarded between the IPIP tunnels and your local subnet. > Or can I use a "simple" tool such as BIRD Internet Routing Daemon > http://bird.network.cz/ <http://bird.network.cz/> (the first thing that came up when I searched > for ipip routing deamons). No. That software only handles standard protocols, and RIP44 isn't one. (well, it almost is, it is just RIPv2, but the handling of the information by the routing daemon is different) An alternative when you do not want to do as much on your brother's computer and do have a Linux system yourself, is to just forward all IPIP traffic received by your brother's computer to your computer over the local network, and run ampr-ripd etc on your own computer. Rob

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Re: [44net] Trouble creating a Gateway into 44net
by Rob Janssen 24 Mar '17

24 Mar '17

> Subject: > Re: [44net] Trouble creating a Gateway into 44net > From: > "Augustine Tabeling, W8AWT" <w8awt(a)qsl.net> > Date: > 03/24/2017 12:36 PM > > To: > 44net(a)hamradio.ucsd.edu > > > > "An alternative when you do not want to do as much on your brother's computer >> and do have a Linux system yourself, is to just forward all IPIP traffic received >> by your brother's computer to your computer over the local network, and run >> ampr-ripd etc on your own computer. " >> --- >> This is exactly what I want to do but I have no Idea how to do it. By "all IPIP traffic" do you mean _only_ the IP Protocol 4 Traffic or do you mean effectivly all IP traffic (I dont think that would be ok.)? I ask this because my brothers >> computer has several websites and a few other web services (IRC, SSH, FTP, Minecraft) running on it and everything that I do cannot interfere with them. On a Linux system, this is easy. IPIP stands for "IP in IP" which is the protocol that is used for AMPRnet tunnels. The outer IP packet has protocol 4, the inner IP packet is the actual packet to be transferred. Use the following command to send all incoming IPIP traffic (IP protocol 4) to another system using a destination NAT rule: *|iptables -t nat -A PREROUTING -p 4 -j DNAT --to-destination 1.2.3.4|* Instead of the 1.2.3.4 you put the IP address of your own computer. The replies to those packets can be sent directly to the router so it is not required to configure a reverse for this. (assuming the router does NAT itself) This command has to be repeated every time the computer is booted. To do that, you can add it to the file /etc/rc.local Rob

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Re: [44net] Trouble creating a Gateway into 44net
by Augustine Tabeling, W8AWT 24 Mar '17

24 Mar '17

Hi All, > > I am new to 44net and I am trying to create a gateway into it. but I > am running into problems. > My brother runs a Ubuntu server on our LAN and has the router DMZ'd to > it. I would like to create a gateway to 44net on the LAN but not on > his server. Would it be possible to set up 44net access on the LAN and > working with but not on his server. if possible I would like to start > by using a Ubuntu Server Virtual Machine and later move to a Linksys > wifi router If I get it working well. > I am new to networking and learning slowly. My brother is willing to > work with me if I tell him what I need him to do but wont put a lot of > energy into figuring out how to make it work. > > 73!, > Augustine, W8AWT >

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Re: [44net] FW: JNOS2.0K and Netrom problem
by Rob Janssen 18 Mar '17

18 Mar '17

> While ago, just for fun, SUCCESSFULLY compiled JNOS-2.0k > on Debian-8.7/64 bit with CFLAGS -m64 > This binary is running right now on desktop PC instance of JNOS: > 2LPJNS:SP2L - simply flawlessly... Hi! Ok, that is good! I once tried this with NETCHL and it failed, and I did not want to spend the effort of going through all code to make it 64-bit secure, and this is a waste for such a program anyway (it does not require large integers or pointers that can access more than 2GB). So for NETCHL the -m32 flag is mandatory. Of course, with Debian8.7 there still are several compiler options (4.6 - 4.9 and maybe more) so there may be some issue with a different version of the compiler, I have seen that happen in the past. Otherwise I have no clue what could be happening, we would need at least the stack backtrace and maybe more. Rob

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Re: [44net] FW: JNOS2.0K and Netrom problem
by Rob Janssen 15 Mar '17

15 Mar '17

> A couple of weeks ago I downloaded and compiled jnos2.0K and found that > while the compile appeared to be successful, jnos would crash when a nodes > list was sent or I entered "netrom bc xxx" > So I have learn a lot about linux since then but not yet found the problem. > I compiled using Fedora 24 with the most latest updates on two different > PC's and today downloaded the gz file again. As you mention JNOS I presume you are not using the NET/ROM code built into the Linux kernel, but run JNOS as a user program on some tun/tap device. This means, this problem has very little to do with Linux. It is just a bug in the code, maybe combined with a property of the compiler. It sometimes happens that when you compile C code with a newer (or another) compiler than the original developer used, bugs surface that have always been present under the carpet. What happens when it crashes? Segmentation violation? That would indicate a corrupted pointer or -memory. When you type "ulimit -c unlimited" before you start the program you will get a core file (memory dump), and you can find out what is happening using gdb. Of course you need some insight in programming, but it could already help when you just print the stack backtrace (bt) and post it here. I have no personal experience with JNOS under Linux but it kind of surprises me that nowhere in the makefile or compile document there is mention of "64 bits". I would compile a program this age in 32-bit mode (my NETCHL also requires this), and that would be done by adding -m32 to the CFLAGS and installing the 32-bit development libraries first. But I leave it to others to comment if this is required. Unclean code could fail in the way you describe when compiled in 64-bit mode and work perfectly in 32-bit mode. Rob

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FW: JNOS2.0K and Netrom problem
by vk1kw 15 Mar '17

15 Mar '17

Hi All, A couple of weeks ago I downloaded and compiled jnos2.0K and found that while the compile appeared to be successful, jnos would crash when a nodes list was sent or I entered "netrom bc xxx" So I have learn a lot about linux since then but not yet found the problem. I compiled using Fedora 24 with the most latest updates on two different PC's and today downloaded the gz file again. A kind user has helped enormously and sent me a file he compiled last December 11 (I think) and it runs well. Jnos2.0i compiled here today also runs well with no problems using my same config.h file. So it seems that something has changed with the "netrom broadcast" source file since around December. I have discounted Fedora mostly as jnos2.0i still compiles good so a side by side source file compare is the next do. The question is then, has anyone else had netrom crashes after a recent Fedora jnos2.0k compile please? Regards Rob vk1kw -----Original Message----- From: 44Net [mailto:44net-bounces+vk1kw=netspace.net.au@hamradio.ucsd.edu] On Behalf Of vk1kw Sent: Thursday, March 09, 2017 10:28 PM To: 44net(a)hamradio.ucsd.edu Subject: [44net] JNOS2.0K and Netrom problem (Please trim inclusions from previous messages) _______________________________________________ . _________________________________________ 44Net mailing list 44Net(a)hamradio.ucsd.edu http://hamradio.ucsd.edu/mailman/listinfo/44net

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Re: [44net] TimeFrame
by Rob Janssen 11 Mar '17

11 Mar '17

> What's the timeframe to get a block of IP's, I'd like to start testing > and messing around with AMPRnet. I've got BGP routing available, and I > can't wait to get connected. > I am my Wireless ISP, so that won't be an issue. I have a few different > routes, so I'm hoping for a /23, and put one on each end of my network. Well, it should be mentioned that going directly for BGP routing and mentioning that you are an ISP is probably not going to speed things up! It would be advisable to start experiments with IPIP tunnels or other connectivity and add BGP routing later, as a service to local hams only. There are lots of requests for large blocks to be BGP routed for AMPRnet that really are attempts from ISPs to get IPv4 space that they can no longer obtain from the normal registries, so this kind of requests and formulation will make the coordinator very wary... Rob

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TimeFrame
by Michael W Rhone II 11 Mar '17

11 Mar '17

What's the timeframe to get a block of IP's, I'd like to start testing and messing around with AMPRnet. I've got BGP routing available, and I can't wait to get connected. KB3PEV Michael W Rhone II

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Re: [44net] TimeFrame
by Michael Fox - N6MEF 11 Mar '17

11 Mar '17

> We do service a handful repeaters, and I'm hoping to do a some sort of > RF based TCP/IP solution, haven't found one I like yet. Any > recommendations? I could go Wifi based, 900/2.4,5ghz, but I'm hoping > to find something other then packet to use at 440 or 1.2. Check out NW Digital Radio's UDRX-440 (56kbps IPv6 on 440 MHz) MichaelN6MEF

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Axip and mail
by Shawn Bush 09 Mar '17

09 Mar '17

Hello, I have linbpq32 setup and would like to get more axip connections and chat links. I also would like to get some messages flowing my direction. Could anyone help? I can give you my MAP line... 73's Shawn Bush KD8NCV

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