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Ftp server behind the router

Ftp server behind the router# Security - 系统安全

w*d2002-06-18 07:06

1 楼

I setup an FTP server after a router. And I use virtual server
mechanism to open the FTP service to WAN. But when I use passive
mode to connect the FTP server from outside, it doesn't work.
It works when I disable the passive mode.
Why is it like this? Any explanation?
Thanks.

ft2002-06-18 07:06

2 楼

You ftp server doesn't support passive mode.

【在 w*****d 的大作中提到】

: I setup an FTP server after a router. And I use virtual server
: mechanism to open the FTP service to WAN. But when I use passive
: mode to connect the FTP server from outside, it doesn't work.
: It works when I disable the passive mode.
: Why is it like this? Any explanation?
: Thanks.

w*d2002-06-18 07:06

3 楼

No. Before I installed the router, I can use "passive mode" to connect.

【在 ft 的大作中提到】

: You ftp server doesn't support passive mode.

p*f2002-06-18 07:06

4 楼

firewall is the problem.
passive mode is usually used when client is behind firewall,
not the other way around.

【在 w*****d 的大作中提到】