最近才发现的，我的FTPRush版本1.0.0623，对方Gene6版本3.8.0。
用Ftprush连接对方ftp服务，出现大量500 Access denied. 错误，类似这样的

[2] 211 End.
[2] CLNT FTPRush 1.0.0.623U
[2] 550 Access is denied.
[2] OPTS UTF8 ON
[2] 550 Access is denied.
[2] MODE Z
[2] 200 Mode Z ok.
[2] PWD
[2] 257 "/" is current directory.
[2] PASV
[2] 227 Entering Passive Mode (xx,xx,xx,xx,141,93)
[2] 打开数据连接到主机: xx.xx.xx.xx端口: 36189
[2] MLSD
[2] 550 Access is denied.
[2] MLSD
[2] 550 Access is denied.
[2] xxx 已断开
 
换了成Flashfxp则可以正常登录Gene6。