THis script uses upnp client (upnpc) to talk to router and open ports

upnpPortMapper.sh

#!/bin/bash
#~/bin/upnpPortMapper.sh
#sudo apt-get install miniupnpc
#crontab -l | grep upnp || echo $(crontab -l ; echo '*/5 * * * * ~/bin/upnpPortMapper.sh  >/dev/null 2>&1') | crontab -

export LC_ALL=C
router=$(ip r | grep default | cut -d " " -f 3)
gateway=$(upnpc -l | grep "desc: http://$router:[0-9]*/rootDesc.xml" | cut -d " " -f 3)
ip=$(upnpc -l | grep "Local LAN ip address" | cut -d: -f2)

external=80
port=80
upnpc -u  $gateway -d $external TCP
upnpc -u  $gateway -e "Web mapping for RaspberryPi" -a $ip $port $external TCP 

external=443
port=443
upnpc -u  $gateway -d $external TCP
upnpc -u  $gateway -d $external UDP
upnpc -u  $gateway -e "TLS Web mapping for RaspberryPi" -a $ip $port $external TCP 

This is awesome, I've been try work this out for days, ive added it to my domoticz.sh file and it works a treat. Many Thanks mvadu.

Router and gateway dont seem to be needed. Still, a useful gist.

Router and gateway dont seem to be needed. Still, a useful gist.

You would need them if you happen to have more than one UPNP servers which broadcasts own self. In that case script checks where it got the IP, and generates a upnp gateway url.