Rubbed the student discount, bought a Ali cloud server, 5M bandwidth to foreign lines to reduce the probability of packet loss is not bad, NS online beauty, but it is said that the port service online service is out, I do not know how online quality will be.
Firewall relay chestnut
Open the IP camouflage
firewall-cmd --add-masquerade --permanent
# add the port protocol
firewall-cmd --add-forward-port=port= transfer port: proto=tcp:toport= acid milk port: toaddr= acid yogurt address --permanent
firewall-cmd --add-forward-port=port= transit port: proto=udp:toport= sour milk port: the address of the sour yogurt.