Permission denied when changing port

Crazy Raisin il y a 8 ans 0
I am wanting to create a domain and set port to 770 mainly for the ftp since this would be for storage but got the following error:

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok nginx: [emerg] bind() to failed (13: Permission denied) nginx: configuration file /etc/nginx/nginx.conf test failed

What am I setting up wrong?