在CentOS下,vsftpd -v 都是2.2.2
reverse_lookup_enable
Set to YES if you want vsftpd to transform the ip address into
the hostname, before pam authentication. This is useful if you
use pam_access including the hostname. If you want vsftpd to run
on the environment where the reverse lookup for some hostname is
available and the name server doesn’t respond for a while, you
should set this to NO to avoid a performance issue.
Default: YES
设置NO的目的就是关闭DNS反向解析,提高登录验证速度。
但是Ubuntu 10.04和12.04的man vsftpd.conf中,均未找到此选项。
分别使用rpm和deb包安装的。
请教各位Ubuntu中此选项的值如何设置?默认值是什么?
PS:无法通过编译重新安装Ubuntu服务器上的vsftpd
