NetBSD

pure-ftpd是一款非常好的FTP服务软件。FreeBSD本身提供了两个很好的FTP服务器，一个是传统的BSD ftpd(8)，另一个是来自NetBSD的lukemftpd(8)，尽管性能和安全性都不错(做过全面代码审计)，但配置虚拟用户会比较麻烦。

TCP is vulnerable?! Yes if your system relays on persist TCP connections, for example, routers supporting BGP. CERT has released a advisory about this.

I have installed these code on my test box. Well… an automated patch mechanism would be better but the current approach is just ok.

Theo de Raddt has pointed out that the /dev/crypto testing program in FreeBSD, like in NetBSD, was derived from a test program which he never published with a free license. It has now been deleted from the NetBSD tree as well.