Re: Extremely abnormal behaviour: ftp client does show a file list in a folder occasionally

1) ftp.exe is active mode client. and it uses port 21 and 20. Most the
issues I have seen is active mode working but not passive mode

2) you have ip restriction configured that reject local ftp connection?
check the ip restriction setting at the directory security tab

3) firewal exception list ? that's for inbound right? from client site, by
default outbound not block.
for host end. the firewall exception list should allow inetinfo.exe.

Read few more KBs

Information About the IIS File Transmission Protocol (FTP) Service
http://support.microsoft.com/?id=283679
How To Configure PassivePortRange In IIS
http://support.microsoft.com/?id=555022

now, in the past few able to customize the port range make configure custom
port at firewall to make it works.
while some also complaint that this is not working, also few issue related
to RRAS.

for your case - try the inetinfo.exe first. then enable firewall logging and
see what's blocking.


--
Regards,
Bernard Cheah
http://www.iis.net/
http://www.iis-resources.com/
http://msmvps.com/blogs/bernard/


"kevin" <ocean_chen@xxxxxxxxxxx> wrote in message
news:1172820703.157595.46710@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Thanks again.

1. What do you mean that the active mode shoud work? For DOS FTP.exe
at client side? Is there any specification I should set up?

2. I tested ftp.exe locally on the server, it shows as follows:

C:\>ftp
ftp> open xxx.xxx.xx.xx
Connected to xxx.xxx.xxx.xx.
530 Connection refused, unknown IP address.
421 Service not available, closing control connection.
Connection closed by remote host.
ftp>

Initially ftp.exe was not on the Firewall exception list. After I
added ftp.exe to the exception list and run it again, the same result.

If I set off the Firewall off at the server, it is still the same
negative result.

At this time, from the server Windows Firewall GUI, I note that
"Windows Firewall is using your non-domain settings". Not quite sure
about this.

3. If I set firewalls off at both ends, the ftp client can show full
file list now - and it works!
More tests:
Firewall off at server side, on client XP side - still works;
Firewall on at server side, off client XP side - not work.

From these, it seems this is AGAIN related to the firewall setting at
the Server side.

Really like to follow your more suggestions to solve the problem.



.

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