I’m not particularly networking savvy, in fact I’m at the opposite end of 
networking familiarity. I’ve contacted Wayne a few times to ask that the K4 
remote solution (whether K4/K4-0 or VK4 software) follow the KISS principle and 
make connectivity simple enough for someone like me. I’m hoping I won’t have to 
try to figure out tunneling, setting up a VPN or any of the other alphabet soup 
solutions that quickly turn into blah blah blah for me.

73, Lou W0FK


Lou Laderman
Sent from my mobile device 

On Dec 15, 2023, at 11:57 AM, Rick Tavan <r...@tavan.com> wrote:

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
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>> 
>> 
>> --
>> --
>> 
>> Rick Tavan
>> Truckee and Saratoga, CA
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> 


--
--

Rick Tavan
Truckee and Saratoga, CA
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