Re: [44net] A new era of IPv4 Allocations : Agree

On 10 Aug 2021, at 23:30, Toussaint OTTAVI via 44Net <44net(a)mailman.ampr.org> wrote:  The purpose is not only to allow/block traffic. The TAC proposal describes two different user cases (called "Internet" and "Intranet") that suit different needs all over the world. Some of us are already using some similar schemes, but with different implementations all over the world. This makes routing a headache, and there are many situations where sysops don't know how to route traffic correctly. F/ex, in France, most of D-Star or DMR stuff which have 44et addressing are in fact using dual addressing, and have also a classic Internet IP, so that they can be reached from Internet. The separation into two subnets proposed by the TAC solves that, by defining clear routing policy for each subnet : - The "Internet" subnet is routed on public Internet via eBGP, and packets are carried via Internet - The "Intranet" subnet is not announced on Internet, but is only routed internally (as European HamNet does with iBGP) In your situation : - If you want to be reachable from public Internet, you can choose the "Internet" subnet, and set up your firewall rules according to your needs - If you want to be on a completely closed network not reachable from public Internet (such as Hamnet), then you can choose the "Intranet" subnet. Here, we decided to use the best of both modes. We're using dual addressing, and each site can have both Internet and Intranet addresses. Any device just needs to be connected to the right Ethernet interface, and it automatically gets the right IP, and the right routing / firewalling policy. The TAC proposal is a normalization of what some of us are already doing, with 44.190 "Internet / no country", or with BGP announcement of 44.x subnet. It offers clear segmentation about the two modes, and should help setting up routing policies by just having two big subnets. With the current proposal, and if you need your full IP range to be reachable directly from public Internet, then yes, I think you'll have to renumber to something in in 44.0. Anyway, I would answer to your question by another question : Even with a good firewalling, do you really need and/or want all your IP range, all your endpoints, all your users to be exposed to public Internet ? As said before, we choose to use both addressing, and we decide individually for every application or device device. F/ex : - D-Star, DMR, XLX -> Internet subnet - Remote control of HF radio-club station -> Intranet subnet Then, another option for you would be : - Keep your current network in 44.138, but consider it as "Intranet", "HamNet clone", and stop announcing it via BGP - Get another subnet in 44.0 for "Internet" and announce it via BGP - Choose individually what devices need to be reachable from public Internet (they should not be the majority), and just migrate/renumber those to 44.0 Or better suggestion : Do dual addressing everywhere like we do :-) If things work well, we (the TAC and all the sysops here) should be able to define clear routing policies, build a backbone, define a common POP policy, and define standard configuration for "Access" routers or endpoints to be implemented on a wide range of low-cost platforms :-) Of course, this would involve some work for everybody. But if we want to make 44net access easier and gain users, it seems obvious we'll have to migrate the current mess (there are not two user groups that do exactly the same thing) to something a little bit more normalized and harmonized ofer the world. Then, we all will have to change some things, HI :-) 73 de TK1BI _________________________________________ 44Net mailing list 44Net(a)mailman.ampr.org https://mailman.ampr.org/mailman/listinfo/44net