how to check if my nginx server has x-frame disabled - reactjs

Question

I'm doing a port 80 redirect with namecheap : i'm doing mydomain.com to redirect to my server 400.300.200.100:myport. myport is not 80 but another port.
Now namecheap is stating "If the server (you are redirecting the domain to) has X-Frame feature disabled, you may select a Masked Redirect for the client's browser to display your domain name instead of http://1.2.3.4:50."
I would like my domain to be displayed instead of myserver:port. So where should i check if I have x frame disabled? in my react frontend ? in my nginx configuration?
Should I put
X-Frame-Options: DENY
or
X-Frame-Options: SAMEORIGIN
?
Can someone tell me if i need to configure this on nginx?
this is my nginx.conf
server {
listen 80;
server_name localhost;
location / {
root /usr/share/nginx/html/storybook-static;
index index.html index.htm;
try_files $uri $uri/ /index.html;
}
location /wagtail {
proxy_pass http://172.20.128.2:8000;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Script-Name /wagtail;
}
location /static/ {
alias /app/static/;
}
location /media/ {
alias /app/media/;
}
}

Answer 1

For security reasons usually an xframe 'same origin' option is used.
Go to where Nginx is installed and then a conf folder
check the following parameter in nginx.conf under server section
add_header X-Frame-Options.
Another way is to go to your Nginx installation directory, if using Linux and run
grep -rnw 'X-Frame'
It will show you all files with header traces.