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Home > Archive > IIS FTP Server > September 2006 > FTP PASV responses with wrong ip-adress
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FTP PASV responses with wrong ip-adress
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| nic@xs4all.nl 2006-08-30, 7:32 am |
| My server had two ip-addresses bound to it, mainly because I run two
different ftp services on my Windows 2003 Standard SP1 server. Until
now PASV worked fine (except for a wrong PassivePortRange, but that's a
different story). But since last patch round, the server always
responses with the first configured ip-address instead of the
ip-address the client connected to:
telnet 82.94.249.51 21
220-Microsoft FTP Service
220 OYPO FTP-server
USER xxxxx
331 Password required for xxxxx
PASS xxxxx
230 User xxxxx logged in.
PASV
227 Entering Passive Mode (82,94,249,50,19,246).
QUIT
221
Note I make a connection to 82.94.249.51, but PASV responds with
82.94.249.50.
For normal ftp clients this is no problem, although I also run a java
applet ftp client on my webserver on 82.94.249.51, and Java security
only allows connections to/from the same ip-address the applet runs on.
Does anyone know how to work around this, or which patch possibly could
have caused this? Any help is appreciated.
Nic.
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| Bernard Cheah [MVP] 2006-09-16, 1:42 pm |
| Ouch, this is something new 
is it make any different if you change the tcpip binding order of those ip
address at NIC ?
--
Regards,
Bernard Cheah
http://www.iis.net/
http://www.iis-resources.com/
http://msmvps.com/blogs/bernard/
<nic@xs4all.nl> wrote in message
news:1156934871.713110.37450@m73g2000cwd.googlegroups.com...
> My server had two ip-addresses bound to it, mainly because I run two
> different ftp services on my Windows 2003 Standard SP1 server. Until
> now PASV worked fine (except for a wrong PassivePortRange, but that's a
> different story). But since last patch round, the server always
> responses with the first configured ip-address instead of the
> ip-address the client connected to:
>
> telnet 82.94.249.51 21
>
> 220-Microsoft FTP Service
> 220 OYPO FTP-server
> USER xxxxx
> 331 Password required for xxxxx
> PASS xxxxx
> 230 User xxxxx logged in.
> PASV
> 227 Entering Passive Mode (82,94,249,50,19,246).
> QUIT
> 221
>
> Note I make a connection to 82.94.249.51, but PASV responds with
> 82.94.249.50.
> For normal ftp clients this is no problem, although I also run a java
> applet ftp client on my webserver on 82.94.249.51, and Java security
> only allows connections to/from the same ip-address the applet runs on.
>
> Does anyone know how to work around this, or which patch possibly could
> have caused this? Any help is appreciated.
>
> Nic.
>
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