web server避免一些不必要的麻烦，可以把apache和php的版本信息不显示

隐藏 Apache 版本信息

/etc/apache2/apache2.conf 或 /etc/httpd/conf/httpd.conf

ServerTokens ProductOnly
ServerSignature Off

重启 apache
现在 http 头里面只看到:
Server: Apache

=====================

nginx

#vi nginx.conf
在http 加上 server_tokens off;

如下：

http {
……省略配置
sendfile on;
tcp_nopush on;
keepalive_timeout 65;
tcp_nodelay on;
server_tokens off;
…….省略配置
}

=======================

隐藏 PHP 版本
php.ini

expose_php On
改成
expose_php Off

重启apache后，php版本在http头中隐藏了。

===

参考解决方案：

1. Lighttpd 1.4.20
src/response.c:108 改为：
buffer_append_string_len(b, CONST_STR_LEN("Server: jufukeji"));
输出 Header：
HTTP/1.1 404 Not Found
Content-Type: text/html
Content-Length: 345
Date: Mon, 12 Jan 2009 13:54:02 GMT
Server: jufukeji

2. Nginx 0.7.30
src/http/ngx_http_header_filter_module.c:48-49 改为：
static char ngx_http_server_string[] = "Server: jufukeji" CRLF;
static char ngx_http_server_full_string[] = "Server: jufukeji" CRLF;
输出 Header：
HTTP/1.1 200 OK
Server: jufukeji
Date: Mon, 12 Jan 2009 14:01:10 GMT
Content-Type: text/html
Content-Length: 151
Last-Modified: Mon, 12 Jan 2009 14:00:56 GMT
Connection: keep-alive
Accept-Ranges: bytes

3. Cherokee 0.11.6
cherokee/version.c:93 添加：
ret = cherokee_buffer_add_str (buf, "jufukeji");
return ret;
输出 Header：
HTTP/1.1 200 OK
Connection: Keep-Alive
Keep-Alive: timeout=15
Date: Mon, 12 Jan 2009 14:54:39 GMT
Server: jufukeji
ETag: 496b54af=703
Last-Modified: Mon, 12 Jan 2009 14:33:19 GMT
Content-Type: text/html
Content-Length: 1795

4. Apache 2.2.11
server/core.c:2784 添加：
ap_add_version_component(pconf, "jufukeji");
return;
输出 Header：
HTTP/1.1 200 OK
Date: Mon, 12 Jan 2009 14:28:10 GMT
Server: jufukeji
Last-Modified: Sat, 20 Nov 2004 20:16:24 GMT
ETag: "1920edd-2c-3e9564c23b600"
Accept-Ranges: bytes
Content-Length: 44
Content-Type: text/html

5. Squid 3.0 STABLE 11
src/globals.cc:58 改为：
const char *const full_appname_string = "jufukeji";
输出 Header：
HTTP/1.0 400 Bad Request
Server: jufukeji
Mime-Version: 1.0
Date: Mon, 12 Jan 2009 15:25:15 GMT
Content-Type: text/html
Content-Length: 1553
Expires: Mon, 12 Jan 2009 15:25:15 GMT
X-Squid-Error: ERR_INVALID_URL 0
X-Cache: MISS from 'cache.hutuworm.org'
Via: 1.0 'cache.hutuworm.org' (jufukeji)
Proxy-Connection: close

6. Tomcat 6.0.18
java/org/apache/coyote/http11/Constants.java:56 和 java/org/apache/coyote/ajp/Constants.java:236 均改为：
ByteChunk.convertToBytes("Server: jufukeji" + CRLF);
输出 Header：
HTTP/1.1 200 OK
Server: jufukeji
ETag: W/"7857-1216684872000"
Last-Modified: Tue, 22 Jul 2008 00:01:12 GMT
Content-Type: text/html
Content-Length: 7857
Date: Mon, 12 Jan 2009 16:30:44 GMT

7. JBoss 5.0.0 GA
a. tomcat/src/resources/web.xml:40 改为
jufukeji
b. 下载 JBoss Web Server 2.1.1.GA srctar （http://www.jboss.org/jbossweb/downloads/jboss-web/）
java/org/apache/coyote/http11/Constants.java:56 和 java/org/apache/coyote/ajp/Constants.java:236 均改为：
ByteChunk.convertToBytes("Server: jufukeji" + CRLF);
将编译所得 jbossweb.jar 覆盖 JBoss 编译输出文件：
JBOSS_SRC/build/output/jboss-5.0.0.GA/server/all/deploy/jbossweb.sar/jbossweb.jar
JBOSS_SRC/build/output/jboss-5.0.0.GA/server/standard/deploy/jbossweb.sar/jbossweb.jar
JBOSS_SRC/build/output/jboss-5.0.0.GA/server/default/deploy/jbossweb.sar/jbossweb.jar
JBOSS_SRC/build/output/jboss-5.0.0.GA/server/web/deploy/jbossweb.sar/jbossweb.jar
输出 Header：
HTTP/1.1 200 OK
Server: jufukeji
X-Powered-By: jufukeji
Accept-Ranges: bytes
ETag: W/"1581-1231842222000"
Last-Modified: Tue, 13 Jan 2009 10:23:42 GMT
Content-Type: text/html
Content-Length: 1581
Date: Tue, 13 Jan 2009 10:30:42 GM