方法 1： 调用 " 安装 API InstallHinfSection " 函数以安装 Windows 防火墙

要安装 Windows 防火墙, 请按照下列步骤：

方法 2： Windows 防火墙项添加到注册表

警告 如果正确修改注册表通过注册表编辑器或通过其他方法可能发生 Serious 问题。 这些问题可能需要重新安装操作系统。 Microsoft 不能保证能够解决这些问题而。 修改注册表需要您自担风险。

要将 Windows 防火墙项添加到注册表, 请按照下列步骤操作：

最后考虑到是不是WINSOCK坏了，于是采用了修复方式：运行－netsh winsock reset
重启，发现防火墙回来了，网络ID和计算机名又可以修改了，赫赫。希望对同样遭遇的有帮助。

Rundll32.exe, 顾名思义，“执行32位的DLL文件”。它的作用是执行DLL文件中的内部函数，这样在进程当中，只会有Rundll32.exe，而不会有DLL后门的进程，这样，就实现了进程上的隐藏。如果看到系统中有多个Rundll32.exe，不必惊慌，这证明用Rundll32.exe启动了多少个的DLL文件。当然，这些Rundll32.exe执行的DLL文件是什么，我们都可以从系统自动加载的地方找到。

Rundll32.exe使用的函数原型：
Void CALLBACK FunctionName (
HWND hwnd,
HINSTANCE hinst,
LPTSTR lpCmdLine,
Int nCmdShow
);

其命令行下的使用方法为：Rundll32.exe DLLname,Functionname [Arguments]
DLLname为需要执行的DLL文件名；Functionname为前边需要执行的DLL文件的具体引出函数；[Arguments]为引出函数的具体参数。

利用rundll32重启机器的实验 : 点击“开始－程式－Ms－Dos方式”，进入Dos视窗，然后键入rundll32.exe user.exe,restartwindows，再按下回车键，这时你将看到，机器被重启了！

RUNDLL.EXE
这里要注意三点：1.Dll档案名中不能含有空格，比如该档案位於c:\ProgramFiles\目录，你要把这个路径改成c:\Progra～1\；2.Dll档案名与Dll入口点间的逗号不能少，否则程式将出错并且不会给出任何资讯！3.这是最重要的一点：Rundll不能用来呼叫含返回值参数的Dll，例如Win32API中的GetUserName(),GetTextFace()等。在Visual Basic中，提供了一条执行外部程式的指令Shell,格式为：
Shell “命令列”
如果能配合Rundll32.exe用好Shell指令，会使您的VB程式拥有用其他方法难以甚至无法实现的效果：仍以重启为例，传统的方法需要你在VB工程中先建立一个模组，然后写入WinAPI的声明，最后才能在程式中呼叫。而现在只需一句:

Shell “rundll32.exe user.exe,restartwindows”就搞定了！

实际上，Rundll32.exe在呼叫各种Windows控制面板和系统选项方面有著独特的优势。
命令列: rundll32.exe shell32.dll,Control_RunDLL
功能: 显示控制面板
命令列: rundll32.exe shell32.dll,Control_RunDLL Access.cpl,,1
功能: 显示“控制面板－辅助选项－键盘”选项视窗
命令列: rundll32.exe shell32.dll,Control_RunDLL access.cpl,,2
功能: 显示“控制面板－辅助选项－声音”选项视窗
命令列: rundll32.exe shell32.dll,Control_RunDLL access.cpl,,3
功能: 显示“控制面板－辅助选项－显示”选项视窗
命令列: rundll32.exe shell32.dll,Control_RunDLL access.cpl,,4
功能: 显示“控制面板－辅助选项－滑鼠”选项视窗
命令列: rundll32.exe shell32.dll,Control_RunDLL access.cpl,,5
功能: 显示“控制面板－辅助选项－传统”选项视窗
命令列: rundll32.exe shell32.dll,Control_RunDLL sysdm.cpl @1
功能: 执行“控制面板－添加新硬体”向导。
命令列: rundll32.exe shell32.dll,SHHelpShortcuts_RunDLL AddPrinter
功能: 执行“控制面板－添加新印表机”向导。
命令列: rundll32.exe shell32.dll,Control_RunDLL appwiz.cpl,,1
功能: 显示 “控制面板－添加/删除程式－安装/卸载” 面板。
命令列: rundll32.exe shell32.dll,Control_RunDLL appwiz.cpl,,2
功能: 显示 “控制面板－添加/删除程式－安装Windows” 面板。
命令列: rundll32.exe shell32.dll,Control_RunDLL appwiz.cpl,,3
功能: 显示 “控制面板－添加/删除程式－启动盘” 面板。
命令列: rundll32.exe syncui.dll,Briefcase_Create
功能: 在桌面上建立一个新的“我的公文包”。
命令列: rundll32.exe diskcopy.dll,DiskCopyRunDll
功能: 显示复制软碟视窗
命令列: rundll32.exe apwiz.cpl,NewLinkHere ％1
功能: 显示“建立快捷方式”的对话框，所建立的快捷方式的位置由％1参数决定。
命令列: rundll32.exe shell32.dll,Control_RunDLL timedate.cpl,,0
功能: 显示“日期与时间”选项视窗。
命令列: rundll32.exe shell32.dll,Control_RunDLL timedate.cpl,,1
功能: 显示“时区”选项视窗。
命令列: rundll32.exe rnaui.dll,RnaDial [某个拨号连接的名称]
功能: 显示某个拨号连接的拨号视窗。如果已经拨号连接，则显示目前的连接状态的视窗。
命令列: rundll32.exe rnaui.dll,RnaWizard
功能: 显示“新建拨号连接”向导的视窗。
命令列: rundll32.exe shell32.dll,Control_RunDLL desk.cpl,,0
功能: 显示“显示属性－背景”选项视窗。
命令列: rundll32.exe shell32.dll,Control_RunDLL desk.cpl,,1
功能: 显示“显示属性－萤屏保护”选项视窗。
命令列: rundll32.exe shell32.dll,Control_RunDLL desk.cpl,,2

# READ THIS: This example file is NOT an exhaustive list of vsftpd options.
# Please read the vsftpd.conf.5 manual page to get a full idea of vsftpd's
# capabilities.
#
# Allow anonymous FTP? (Beware - allowed by default if you comment this out).
anonymous_enable=yes
#
# Uncomment this to allow local users to log in.
local_enable=YES
#local_root=/var/ftp
#
# Uncomment this to enable any form of FTP write command.
write_enable=YES
#
# Default umask for local users is 077. You may wish to change this to 022,
# if your users expect that (022 is used by most other ftpd's)
local_umask=022
#user_config_dir=/etc/vsftpd/userconf
#
# Uncomment this to allow the anonymous FTP user to upload files. This only
# has an effect if the above global write enable is activated. Also, you will

# obviously need to create a directory writable by the FTP user.
anon_upload_enable=NO
#
# Uncomment this if you want the anonymous FTP user to be able to create
# new directories.
anon_world_readable_only=NO
anon_mkdir_write_enable=NO
anon_other_write_enable=NO
#
# Activate directory messages - messages given to remote users when they
# go into a certain directory.
dirmessage_enable=YES
#
# Activate logging of uploads/downloads.
xferlog_enable=YES
#
# Make sure PORT transfer connections originate from port 20 (ftp-data).
connect_from_port_20=YES
#
# If you want, you can arrange for uploaded anonymous files to be owned by
# a different user. Note! Using "root" for uploaded files is not
# recommended!

##chown_uploads=YES
#chown_username=whoever
#
# You may override where the log file goes if you like. The default is shown
# below.
xferlog_file=/var/log/vsftpd.log
#
# If you want, you can have your log file in standard ftpd xferlog format
xferlog_std_format=YES

# You may change the default value for timing out an idle session.
idle_session_timeout=600
#
# You may change the default value for timing out a data connection.
data_connection_timeout=120
#
# It is recommended that you define on your system a unique user which the
# ftp server can use as a totally isolated and unprivileged user.
#nopriv_user=ftpsecure
#
# Enable this and the server will recognise asynchronous ABOR requests. Not
# recommended for security (the code is non-trivial). Not enabling it,
 however, may confuse older FTP clients.
#async_abor_enable=YES
#
# By default the server will pretend to allow ASCII mode but in fact ignore
# the request. Turn on the below options to have the server actually do ASCII
# mangling on files when in ASCII mode.
# Beware that turning on ascii_download_enable enables malicious remote parties
# to consume your I/O resources, by issuing the command "SIZE /big/file" in
# ASCII mode.
# These ASCII options are split into upload and download because you may wish
# to enable ASCII uploads (to prevent uploaded scripts etc. from breaking),
# without the DoS risk of SIZE and ASCII downloads. ASCII mangling should be
# on the client anyway..
#ascii_upload_enable=YES
#ascii_download_enable=YES
#
# You may fully customise the login banner string:
#ftpd_banner=Welcome to Daphne Linux FTP service.
#
# You may specify a file of disallowed anonymous e-mail addresses. Apparently
# useful for combatting certain DoS attacks.
#deny_email_enable=YES

# (default follows)
#banned_email_file=/etc/vsftpd.banned_emails
#
# You may specify an explicit list of local users to chroot() to their home
# directory. If chroot_local_user is YES, then this list becomes a list of
# users to NOT chroot().
chroot_local_user=yes
#chroot_list_enable=YES
# (default follows)
#chroot_list_file=/etc/vsftpd.chroot_list
#
# You may activate the "-R" option to the builtin ls. This is disabled by
# default to avoid remote users being able to cause excessive I/O on large
# sites. However, some broken FTP clients such as "ncftp" and "mirror" assume
# the presence of the "-R" option, so there is a strong case for enabling it.
#ls_recurse_enable=YES

pam_service_name=vsftpd
userlist_enable=YES
user_config_dir=/etc/userconf
#enable for standalone mode
listen=yes
tcp_wrappers=yes