Get a 403 while access Confluence by Nginx(XSRF check failed)

[yusunan]

Confluence base URL is 1.1.1.1:8600.And working well.
But we had an other team had to access Confluence by Nginx

It's different with base URL.

The Nginx Server IP is 2.2.2.2,And we can access Confluence by Nginx(XSRF check failed)
Bug get a 403 error in network,And we can't create page by Nginx.

nginx.conf

location / {
proxy_pass http://1.1.1.1:8600;
client_max_body_size 100m;
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Server $host;
proxy_set_header Referer $http_referer;
proxy_set_header Cookie $http_cookie;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;

}

In summary we want to access Confluence by differnet URL,but it only one base URL in settings, Any settings can solve this problem?