优点：

1、体积小，可定制强，效率高，安全， 高速，稳定的虚拟FTP Server
2、可设定多个基于IP的虚拟FTP Server
3、匿名FTP服务实现十分容易
4、匿名FTP的根目录不需要任何特殊的目录结构, 系统程序或者其他系统文件
5、不执行任何外部程序, 减少了安全隐患
6、支持虚拟用户, 且支持每个虚拟用户具有独立的配置
7、支持带宽限制

缺点：用系统的帐号进行用户的验证。不支持Windows平台。

官方站点：http://vsftpd.beasts.org/

最新版本：Jul 2008 - vsftpd-2.0.7

Proftpd  

ProFTPD grew out of the desire to have a secure and configurable FTP server, and out of a significant admiration of the Apache web server.

When the Project began, the most commonly used server was wu-ftpd. While wu-ftpd provides excellent performance and is generally a good product, it lacks numerous features found in newer Win32 FTP servers and has a poor security history. Many people, including the developers who work on ProFTPD, had spent a great deal of time fixing bugs and hacking features into wu-ftpd. Unfortunately, it quickly became clear that a complete redesign was necessary in order to implement the configurability and features desired.

In addition to wu-ftpd, there are a few of other FTP servers available which are designed to be light-weight and secure at the expense of configurability. For example, Troll FTP is an excellent FTP daemon which is considerably more secure and less resource-intensive than wu-ftpd. Unfortunately, while it is quite suitable for basic FTP services, it does not offer the feature set required for more sophisticated FTP sites.

ProFTPD is not a hack based on any other server, it's an independent source tree from the ground up.

Features:

• Single main configuration file, with directives and directive groups which are intuitive to any administrator who has ever used the Apache web server.
• Per directory ".ftpaccess" configuration similar to Apache's ".htaccess".
• Easy to configure multiple virtual FTP servers and anonymous FTP services.
• Designed to run either as a stand-alone server or from inetd/xinetd, depending on system load.
• Anonymous FTP root directories do not require any specific directory structure, system binaries or other system files.
• No SITE EXEC command. In modern Internet environments, such commands are a security nightmare. ProFTPD does not execute any external programs at any time. The source is available (and must always be available) for administrators to audit.
• Hidden directories and files, based on Unix-style permissions or user/group ownership.
• Runs as a configurable non-privileged user in stand-alone mode in order to decrease chances of attacks which might exploit its "root" abilities. Note: This feature is dependent on the capabilities of the host Unix system.
• Logging and utmp/wtmp support. Logging is compatible with the wu-ftpd standard, with extended logging available.
• Shadow password suite support, including support for expired accounts.
• Modular design, allowing server to be extended easily with modules. Modules have been written for SQL databases, LDAP servers, SSL/TLS encryption, RADIUS support, etc.
• IPv6 support.
  

优点：设置简单，单一配置文件，可以单独运作(stand-alone)方式也可以由inetd启动，不执行外部程序。

缺点：仅支持Unix平台和类Unix平台，不支持Windows平台。 

官方站点：http://www.proftpd.org/

最新版本：17/Sep/2008  1.3.2rc2

(责任编辑：admin)