iptables -t nat -A PREROUTING -p tcp -dport 50002 -j DNAT --to electrumx.westeurope.cloudapp.azure.com:50002
iptables -t nat -A PREROUTING -p tcp --dport 50002 -j DNAT -to electrumx.westeurope.cloudapp.azure.com:50002
iptables -t nat -A POSTROUTING -j MASQUERADE
iptables-save
service iptables reload