Thanks, Adrian. I didn't realize how ubiquitous that technique is becoming. I guess I live a sheltered life here in the mountains and, of course, in Silicon Valley. I hope your solutions don't add unacceptable latency.
/Rick N6XI On Fri, Dec 15, 2023 at 9:46 AM KJ7SOY <kj7...@gmail.com> wrote: > Rick: > > The problem is not dynamic IP addresses changing. That’s easy to fix. It’s > CG-NAT (Carrier Grade Network Address Translation), which doesn’t give you > an external world addressable IP address. You can’t assign a DDNS name > because you don’t HAVE an IP address to map to. Many carriers (T-Mobile is > a perfect example) are now using this approach, which blocks customers from > getting to their devices/services from outside their home networks. > > The only solution is to use a commercial tunneling VPN or a free service > like ngrok, which creates a permanent tunnel to external servers which DO > have addressable IP addresses. > > 73, Adrian > > > > On Dec 15, 2023, at 9:20 AM, Rick Tavan <r...@tavan.com> wrote: > > > > Hi, Dave. I don't think it will be much of an issue. With many ISPs, > > external IP addresses change rarely. If your ISP is changing addresses > > frequently, consider using a DDNS server like no-ip.com. I have tested > K4 > > Remote using a DDNS string in lieu of a hard-coded WAN address and it > works > > fine. > > > > /Rick N6XI > > > >> On Fri, Dec 15, 2023 at 1:44 AM Dave <dave.g4...@gmail.com> wrote: > >> > >> Very interesting Rick, thanks for sharing the info. > >> > >> One issue that seems to be increasingly common is that some (many?) > ISPs no > >> longer offer a fixed IP address, which K4 Remote currently needs. The > >> system many ISPs are changing to is carrier grade network address > >> translation, it first surfaced in mobile networks, but is spreading to > home > >> broadband too as ISPs run out of IPv4 addresses, see: > >> https://en.wikipedia.org/wiki/Carrier-grade_NAT > >> > >> A way around this is with the use of a central server, which isn't > usually > >> free. Remote TX works in this way but uses a Raspberry Pi. I note they > >> support the K3. https://www.remotetx.net/ > >> > >> 73 Dave G4AON > >> ______________________________________________________________ > >> Elecraft mailing list > >> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >> Help: http://mailman.qth.net/mmfaq.htm > >> Post: mailto:Elecraft@mailman.qth.net > >> > >> This list hosted by: http://www.qsl.net > >> Please help support this email list: http://www.qsl.net/donate.html > >> Message delivered to rta...@gmail.com > >> > > > > > > -- > > -- > > > > Rick Tavan > > Truckee and Saratoga, CA > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft@mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to kj7...@gmail.com > -- -- Rick Tavan Truckee and Saratoga, CA ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
