44net

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3188 discussions

Re: [44net] Education about networking (Was Re: Inviting you to ARDC Grantmaking Survey + Community Jitsi Call)

by Rob Janssen

>>>/AMPRNet / HamNet routing is quite complicated for a non-IT guy... / >>/The advantage of using BGP even in this trivial case is... / >I don't think the most important question is about selling BGP or any >particular technology (I'm well versed in internetwork engineering and >worked in that field professionally for many years; I'm in academia >now). >I'm writing this because education was a specific question in the >survey. >The reason that we have amateur radio is to enable experimentation with >using the radio spectrum in a way that is otherwise not permitted or >practical. With the Internet, there are certain things that are only >possible to experiment with if you have your own addresses and other >network numbers. AMPRNet is (perhaps that's too strong, and we could >say, "can be") a way of enabling a kind of experimentation on the >Internet similar to what we do with the radio spectrum. It is not clear to me what you are getting at here! These are different layers of the cake. Your radio experimentation will result in some way to transport bits from A to B, but not in a network. To build a network you need another layer, and a way to define what you need to send where to get your message to the destination. That is what BGP is handling. By using BGP instead of static routing, we can connect many radio links and other links together and make a network out of it without getting buried in manual routing chores. Please make sure you understand that the use of BGP I am mentioning here has nothing to do with the use of BGP on internet to route all the internet networks. It is the same protocol, but they are different use cases. Don't get confused when people say they have their AMPRnet subnet BGP routed to them on internet, and other people propose to use BGP internal to the AMPRnet network to route things the correct way, these are two different things. Rob

5 years, 1 month

Re: [44net] Inviting you to ARDC Grantmaking Survey + Community Jitsi Call

by Rob Janssen

> - AMPRNet / HamNet routing is quite complicated for a non-IT guy. BGP requires huge equipment and skills. IPIP requires hacking protocol redirect on Internet boxes. Those are not easy things for people operating a voice repeater or hotspot. They just build a Pi image, plug the machine, and it works. Why should they bother with complex addressing ? We have quite some repeaters that are connected via AMPRnet. We normally use MikroTik routers. I do not consider these "huge equipment" and they are not difficult to configure with BGP. I have some example configs for setting up an endpoint with L2TP/IPsec tunnel to our gateway router and using BGP to advertise their own subnet. This is much easier to get going than IPIP, for example there is no need to touch the existing internet router (open ports/protocols not required). This even makes it suitable for installation on buildings where the owner may make available some guest internet access but would not want you to tweak their network to pass IPIP. The advantage of using BGP even in this trivial case is that the network can now be extended when the opportunity arises without having another hurdle of complexity. A WiFi link to another station can be added, e.g. in some cases people have an internet connection at an amateur nearby the repeater, and then a WiFi link to the repeater itself. I would be all for rolling out such a system worldwide to replace the IPIP mesh. Routers (e.g. MikroTik CHR that can run as a VPS) in datacenters all over the world interconnected with a static tunnel mesh and offering VPN service for local amateurs to connect, and routing using BGP on private AS (this only routes AMPRnet, not full internet). In different places those routers could have the AMPRnet subnet(s) for that region announced on internet, like we do for 44.137.0.0/16 and others do for other country networks. And each of those can offer different VPN technologies so you are able to follow the trend of the day without having to do a migration in the entire network. Rob PE1CHL

5 years, 1 month

ampr.org DNS and rDNS entries

by Marc, LX1DUC

Good evening, it's been a while since I had to add/change/delete DNS entries in the ampr.org DNS zone. The email robot I've used in the past seems to have gone. Could someone please point me into the right direction how this is done nowadays? vy 73 de Marc, LX1DUC

5 years, 1 month

ARRL/TAPR Digital Communications Virtual Conference (DCC), September 11 - 12 (THIS WEEK)

by Mark Thompson

39th Annual ARRL / TAPR Digital Communications Conference (DCC) THIS WEEK - Friday, September 11th & Saturday, 12th DCC will be a virtual conference using Zoom video communications and YouTube video-sharing platforms. DCC information, Technical Papers, Presentation Schedule & Registration Available at: DCC Information DCC Technical Papers DCC Presentation Schedule DCC Registration Registered DCC attendees participating via Zoom will be able to interact with presenters and other attendees via a chat room as well as raise a virtual hand to ask questions. (you don’t need a Zoom account to register). Non-registered DCC attendees can watch the live stream for free on YouTube, however non-registered DCC attendees will not be able to ask questions or chat. No registration is required for YouTube access. The YouTube URL will be announced and posted on this webpage preceding the DCC. DCC registration is free for TAPR members and $30 for non-members. Members receive a 100% discount at checkout. Non-members who would like to join TAPR and receive the free DCC pass can simply add TAPR membership and DCC registration to their shopping carts. After checkout, they will receive the free DCC pass when their membership is processed.

5 years, 2 months

Re: [44net] DDWRT Gateway Instructions

by lleachii＠aol.com

Mike, DD-WRT is not known to provide a method to compile/install the necessary software (i.e. a RIP44 routing daemon). Aside from this, I cannot recall if a tunnel can be established. Nonetheless, if you were to succeed standing up a tunnel, you'd need the routing daemon to properly configure your reply traffic. This routing daemon concern may be overcome by employing a Munge Script (hopefully DD-WRT has some tools like: `curl`, `ftp`, `grep`, `fgrep`, `sed`, `sort` and `diff` installed in the firmware). https://wiki.ampr.org/wiki/Munge_script You can start testing using commands from the startampr, OpenWrt, Ubuntu and/or Linux setup guides on the Wiki. Feel free to ask any questions (when you can stand up a tunnel). I've never used the Munge Script method, I'm sure others have (I should note that there's a script posted that can parse the encap.txt file - it's located on the Firewall page). The `ip tunnel` commands in `startampr` should be of help to test establishing the tunnel. https://wiki.ampr.org/wiki/Startampr#Script --- - Prior to using OpenWrt, I personally forwarded IPENCAP (IP Protocol No. 4) to a gateway running Ubuntu Server. - https://wiki.ampr.org/wiki/Firewalls#DD-WRT - Also see "Static IPENCAP Filtering of AMPR Nodes" here: https://wiki.ampr.org/wiki/Firewalls#iptables 73, - Lynwood KB3VWG

5 years, 2 months

DDWRT Gateway Instructions

by Mike Swiatkowski

Does anyone know how to set up an AMPRnet gateway on a router with DDWRT? I don't want to use OPENWRT based on previous experience. Thanks, Mike, AA9VI

5 years, 2 months

OpenWrt MSS Clamping - 19.07.4

by lleachii＠aol.com

All, First, welcome to the new Director and thanks for the work Chris! I wanted to inform those with OpenWrt-based nodes that version 19.07.4 should fix an MSS clamping bug that was reported to the developers. Some of you that setup OpenWrt routers have noted to me that MSS seemed problematic in one direction. I've worked around this with other OpenWrt operators by placing MSS clamping on the LAN as well as the tunnel-facing sides of the OpenWrt config. Hopefully 19.07.4 fixes the need for this. https://openwrt.org/releases/19.07/notes-19.07.4#major_bug_fixes 73, - Lynwood KB3VWG

5 years, 2 months

Portal maintenance

by G1FEF

The Portal, Wiki & website will be offline for some much needed maintenance for the next hour. Regards, Chris - G1FEF

5 years, 2 months

ax25ipd setup with socat

by Marius Petrescu

Since I get questions about how to use the current kernels for axip or axudp tunnel setups, here is my solution for this, using socat: Here is an example for an axip tunnel. First, create a transparent pty pair, lets say axip an kip located in /var/ax25 (names and locations can be chosen freely): /usr/bin/socat pty,link=/var/ax25/axip,raw,echo=0 pty,link=/var/ax25/kip,raw,echo=0 & Next, attach the kernel side to one end and create a ax25 port let say 'aprs' with address 44.128.1.1 and netmask /32: /usr/bin/kissattach -l /var/ax25/kip aprs 44.128.1.1 ifconfig ax0 netmask 255.255.255.255 (ax0 is the first port created by kissattach) Also, configure port 'aprs' in the ax25 daemon and start it... /usr/sbin/ax25d The other end needs to be configured in the ax25ipd daemon config file to use the other end provided by socat: mode tnc (...) device /var/ax25/axip (...) route n0call 44.128.2.3. b (...) I think this will help, Marius, YO2LOJ

5 years, 2 months

Re: [44net] Say hello to Rosy Wolfe, ARDC's new Executive Director

by Paul Sladen

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Fri, 28 Aug 2020, Phil Karn wrote: > On 8/27/20 5:12 AM, Paul Sladen wrote: Hello Phil, > point is taken. Excellent. Glad that was useful; hopefully the rest is useful too. > > * page 2, > > http://rct.doj.ca.gov/Verification/Web/Download.aspx?saveas=Founding+Docume… > This document is out of date. > ... > As you can see, the purposes of the foundation were broadened ... QED. Metamorphosis has occurred; and further metamorphosis is planned in 2021: https://www.ampr.org/amprnet/ ] (Now that we are receiving significant investment income from our ] address sale, in 2021 we will transition to a private grant-making ] foundation required to disburse at least 5% of our total assets each ] year, on average.) (Please be very, Very, careful with the wording "total assets"...) ...However, the founding document from 2011 is still /the/ founding document, which enabled charitable incorporation, and immutable, and so still to remind incoming employees/trustees of (p.5): ] All assets of this corporation are irrevocably dedicated to public ] and charitable purposes and no part of the net income or assets of ] this corporation shall ever inure to the benefit of any director, ] officer or member thereof or to the benefit of any private person. Which brings us back to the "assets of this corporation"; > > (ADRC is custodian of US$0.25+ Billion in tangible +non-tangibles). > We will be able to talk about the actual numbers as soon as ... Tangible numbers are unncessary for discussion of the quarter-billion, which is obtainable purely from remaining intangibles (unsold IPs): * US$0.25+ Billion == nominal book value of the remaining IPs (intangible assets) held by ADRC: ($20 * ~12.58 million) ...accounting for retained IPs in the "total assets" appears to be a necessary condition, to have allowed made the declaration that the sale of ~25% of total assets was "insubstantial". (p.1): https://www.ampr.org/wp-content/uploads/Courtesy-Notice-to-AG-Signed-ARDC.p… ] the Sale represents only about one-quarter of ARDC's IP Addresses ] and is therefore not a sale of substantially all of ARDC's ] assets. and thusly fall under the s.5913 non-prior-notification exception: ] Accordingly, advance written notice of this Sale was not ] required under California Nonprofit Public Benefit Corporation Law ] Section 5913. So putting together (1) the 5% disbursement plans for 2021, and (2) the necessity to account for "total assets" to claim the non-prior notification in 2019, ...: There would shortfall after 5 years, because... disbursing 5% of ~0.3 billion total assets (tangible + intangible) = US$15 million/year outgoing (cash); against investment income of say ~10% of that. Result would be ARDC, Inc. returning to being non-liquid c.2025, ...necessitating a further sale of AMPRNet IPv4 addresses. > Until then we are not contractually allowed to disclose But, the Trustees would presumably be completely free to give an update on the planned relationship with CAIDA (UCSD Network Telescope), and long-term sustainable plans for AmprGW? -Paul TL;DR: Be very, Very careful of the 5% total assets idea. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iD8DBQFfSRSdc444tukM+iQRAjv1AJ44Rwblo1HStD+pRTawuoeHYvuDIgCdHRtR WaquVeRqmuymtjxm/Q8sUMc= =uvsx -----END PGP SIGNATURE-----

5 years, 2 months

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