如何隐藏nginx版本号：
[root@localhost /]# vi /etc/nginx/nginx.conf
[root@localhost /]# nginx -t
[root@localhost /]# nginx -s reload
配置文件中，http区段中插入“server_tokens off;”，重新载入配置文件
worker_processes 1; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; server_tokens off; expires 5s; sendfile on;
隐藏或修改nginx返回的Server信息：
[root@localhost /]# vi /opt/nginx/nginx-1.2.0/src/http/ngx_http_special_response.c
找到29行：修改展示名称(LLSERVER)
[root@localhost /]# "<hr><center>LLSERVER</center>" CRLF
[root@localhost /]# cd /opt/nginx/nginx-1.2.0/src/http/ngx_http_header_filter_module.c
[root@localhost /]# vi /opt/nginx/nginx-1.2.0/src/http/ngx_http_header_filter_module.c
找到49和50行： 修改展示名称(Server: LLSERVER)
[root@localhost /]# static char ngx_http_server_string[] = "Server: LLSERVER" CRLF;
[root@localhost /]# static char ngx_http_server_full_string[] = "Server: LLSERVER " NGINX_VER CRLF;
隐藏或修改nginx返回的Server信息(以及隐藏版本号)
原文：https://www.cnblogs.com/LJing21/p/14769435.html