Is port forwarding dangerous?

The answer to - Is port forwarding dangerous is that it's is NOT inherently dangerous in itself and YES the safety is dependant on the service at the target port. But safety also depends on how good is your router's firewall and how well it is protected, both internally and externally. For remote access, both SSH and VPN works as good as each other. Neither is more secure than the other when similar levels of encryption are used. But since SSH works at application level, supports only TCP and provides remote access to a single computer only I would prefer VPN tunnelling which in fact works at the transport layer, supports both UDP and TCP and allows secure access to multiple resources. VPN tunnel is NOT the only safe way to achieve remote access, but definitely the preferred way due to the above reasons. Not to mention SSH is really difficult to implement properly in case of multiple resources, can cause DNS leaks and has to be configured separately for each application.