第一種：

返回HTTP 狀態碼

1. server {

2. listen 80 default;

3. server_name _;

4. return 403;

5. }

default表示預設主機


403為Http狀態碼，可根據需要修改


這樣可以遮蔽所有域名（除了你自己繫結的）和IP的訪問。


我們也可以吧return 403;改成重定向，把非法訪問重定向到其他地址

第二種：

1. server {

2. listen 80 default;

3. server_name _;

4. rewrite ^(.*) http://www.baidu.com permanent;

5. }

改成重定向，把非法訪問重定向到其他地址

例子：如下為Nginx.conf的配置

1. #######################################################################

2. #

3. # This is the main Nginx configuration file.

4. #

5. # More information about the configuration options is available on

6. # * the English wiki - http://wiki.nginx.org/Main

7. # * the Russian documentation - http://sysoev.ru/nginx/

8. #

9. #######################################################################

10.  

11. #----------------------------------------------------------------------

12. # Main Module - directives that cover basic functionality

13. #

14. # http://wiki.nginx.org/NginxHttpMainModule

15. #

16. #----------------------------------------------------------------------

17.  

18. user nginx;

19. #worker_processes 16;

20. worker_processes 4;

21.  
22.  

23. ######add parameter######

24. worker_rlimit_nofile 65535;

25. ######end add ###########

26.  
27.  
28.  

29. error_log /var/log/nginx/error.log;

30. #error_log /var/log/nginx/error.log notice;

31. #error_log /var/log/nginx/error.log info;

32.  

33. pid /var/run/nginx.pid;

34.  
35.  

36. #----------------------------------------------------------------------

37. # Events Module

38. #

39. # http://wiki.nginx.org/NginxHttpEventsModule

40. #

41. #----------------------------------------------------------------------

42.  

43. events {

44. #####add parameter #####

45. use epoll;

46. worker_connections 65535;

47. #####end add ###########

48. #worker_connections 1024;

49. }

50.  
51.  

52. #----------------------------------------------------------------------

53. # HTTP Core Module

54. #

55. # http://wiki.nginx.org/NginxHttpCoreModule

56. #

57. #----------------------------------------------------------------------

58.  

59. http {

60. include /etc/nginx/mime.types;

61. default_type application/octet-stream;

62.  

63. log_format main '$remote_addr - $remote_user [$time_local] "$request" '

64. '$status $body_bytes_sent "$http_referer" '

65. '"$http_user_agent" "$http_x_forwarded_for"';

66.  

67. access_log /var/log/nginx/access.log main;

68.  

69. sendfile on;

70. tcp_nopush on;

71. server_names_hash_bucket_size 512;

72. #keepalive_timeout 0;

73. keepalive_timeout 300;

74. tcp_nodelay on; ######add file

75. fastcgi_connect_timeout 300s;

76. fastcgi_send_timeout 300s;

77. fastcgi_read_timeout 300s;

78. fastcgi_buffer_size 64k;

79. fastcgi_buffers 4 32k;

80. fastcgi_busy_buffers_size 64k;

81. fastcgi_temp_file_write_size 64k;

82.  
83.  
84.  

85. #gzip on;

86.  

87. # Load config files from the /etc/nginx/conf.d directory

88. # The default server is in conf.d/default.conf

89. client_header_buffer_size 128k; #####add file

90. large_client_header_buffers 4 128k; #####add file

91. server{

92. listen 80 default;

93. rewrite ^(.*) http://ifengniu.com permanent;

94. }

95. include /etc/nginx/conf.d/*.conf;

96. include sites-enabled/*;

97.  

98. }