VPN is absolutely legal to use almost everywhere in the world. But there are exceptional countries where VPN use is illegal. And the laws and restrictions are not clear, which means the condition of VPN use in these countries is complex.
Countries like Oman, Russia, Turkey, United Arab Emirates, China and Iran have restrictions on VPN use. In China and Iran, only government-approved VPNs are allowed to use. They block VPN usage as part of their wide Internet censorship methods. In the United Arab Emirates, VPN usage may be illegal, although the law is a bit unclear.
In addition, VPN use is fully banned in countries like Iraq. However, it has great impacts on people living in this country.
In countries where VPN use is illegal, the government’s main tool is fear because it spreads propaganda, as it is easy for the government to figure out who uses VPN, and they have been arrested on suspicion of terrorism on several occasions.
Another way for the government to block VPN use is to block the IP addresses that come from servers hosting VPN machines. Again, this is very difficult because the addresses can be changed faster than the government can block them.