What's wrong with using VNC? I use it to get to two remote Weewx running 
RPi. With the RPi, VNC has a deal to access up to five computers for free.

On Wednesday, December 9, 2020 at 6:33:55 PM UTC-8 wa4...@gmail.com wrote:

> Many good ideas here.
>
> My suggestion:
> Set up an identical package at home. Same model pi, same ip address, same 
> weather station setup.
> That way you can update, reconfigure and test your setup and just carry 
> the sim chip on a visit to your remote site.
>
> On Wednesday, December 9, 2020 at 6:55:44 PM UTC-6 mwall wrote:
>
>> On Wednesday, December 9, 2020 at 11:11:23 AM UTC-5 Sunray wrote:
>>
>>>
>>> Anybody done this or can help otherwise? Many thanks in advance! 
>>>
>>
>> excellent suggestions in this thread, especially using only ssh for 
>> access.  you can always tunnel over the ssh connection for vnc or to 
>> probe/diagnose other parts of the remote network.
>>
>> tor is great, but you can also map port 22 on the pi to some other high 
>> port on the public-facing router.  that will stop a lot of the brute force 
>> ssh attacks.  definitely use certificate-only authentication - no passwords.
>>
>> test the catch-up capabilities while you are on site.  weewx was designed 
>> to get data from any logger, so you should not have any gaps in data, even 
>> if the computer running weewx is down for awhile.  but test it to be sure, 
>> and be sure that your logger interval is short enough to get the data you 
>> want, but long enough to get through the longest outage you anticipate.
>>
>> if you have solar+battery in place, then the weak link will typically be 
>> your internet provider at the remote site.  while you are on site, do some 
>> testing of the cable modem or cell uplink or satellite uplink.  be sure 
>> that it will come back online after power failure, and be sure that your 
>> router will properly re-negotiate with your ISP hardware when everything 
>> comes back.
>>
>> avoid auto-configuration software such as NetworkManager or fakehwclock.  
>> you'll want your systems to remain exactly as you configured them.
>>
>> rpi should boot automatically when it gets power, but for anyone using 
>> intel-based hardware, be sure to set the power-on policy in the bios.  in 
>> some bios this setting is rather obscure, but you want it to be always on.
>>
>> definitely do the periodic probe to a web server whose logs you can query 
>> - dyndns can be pretty reliable, but then someone forgets to pay the bill, 
>> or a dns table gets messed up somewhere, or ...
>>
>> of course, there are also all of the mother nature things to watch out 
>> for - lightning strikes, critters chewing through network or power cables, 
>> salt water penetrating your supposedly waterproof poe connections, 
>> temperatures exceeding 50C in your enclosure after spiders build webs 
>> across all of the ventilation ports, UV degradation of your sensor shields 
>> ...
>>
>> m
>>
>

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