Basic port forwarding:

https://www.youtube.com/watch?v=p1T-iAblitw&list=FL6mnzYiBslbo0DiJI8R97VA&index=4&t=0s

https://www.sonicwall.com/en-us/support/knowledge-base/170503477349850

http://techstogo.ca/sonicwall-how-to-open-ports-to-allow-webserver-ftp-email-terminal-service-to-a-server-behind-the-sonicwall/


How to configure NAT policies:

https://www.sonicwall.com/en-us/support/knowledge-base/170505782921100


NAT on Secondary Public IP via 1-2-1 Method

https://www.sonicwall.com/en-us/support/knowledge-base/170504637235916