very important working port forward for pi over ssh and external
requesting
wierd fact jio-fi : upnp and port-forward both are disabled but each
network device get individual IPv6 which works address and IPv4 which
dont works (test confirmation with ssh teamviewer with IPv6 address)
this address changes every time jiofi is rebooted
https://pavelfatin.com/access-your-raspberry-pi-from-anywhere/
https://medium.com/@Martin_Kase/access-your-raspberry-pi-ssh-anywheree72afc53d151
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https://www.raspberrypi.org/documentation/remote-access/access-over- Internet/README.md
remot3.it, by Weaved Inc = ssh vnc web files upload download script execution
Dataplicity = only ssh in web browser
Yaler.net = total mess in setup not free only trial and paid
Losant = no clue of what it is (more like thingsspeak and io.adafruit dashboard
Remote IoT = ssh vnc web custom tcp udp painlessy awsome
beame.io = ssh vpn web (needed external repo depends on nodejs 6.x)
link1 = https://www.beame.wiki/insta-ssl-for-rdp-vnc-ssh/
link2 = https://ypxf72akb6onjvrq.ohkv8odznwh5jpwm.v1.p.beameio.net/insta-ssl
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https://openport.io/
http://serveo.net/
https://portmap.io
https://www.teleconsole.com
http://www.raspberryanywhere.com
https://localtunnel.me/
https://resin.io
http://localhost.run/
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https://raspberrypi.stackexchange.com/questions/6757/how-to-use-sshout- of-home-network
RealVNC Method
https://lifehacker.com/how-to-control-a-raspberry-pi-remotely-fromanywhere- in-1792892937
http://www.instructables.com/id/Remote-SSH-access-to-Raspberry-Pi-2/
https://www.dexterindustries.com/howto/access-your-raspberry-pi-fromoutside- your-home-or-local-network/
root@raspberrypi:/var/spool/cron/crontabs#