IIS 5 FTP server and Comodo Firewall 3.11

Comodo Internet Security - CIS Firewall Help - CIS
1

I can start my ftp server through IIS 5 just fine. However, if I want to connect to it from a remote computer, I can only use the command line ftp, and not some GUI ftp program like FileZilla.

Every time I attempt to transfer a file from my IIS ftp server using FileZilla, I get the ftp error code 421. I don’t understand what this error code is, but it’s preventing me from transferring the file.

Does anyone know what I’m doing wrong?

2

What policy did you give the FileZilla program. Check under Firewall → Advanced → Network Security Policy → Applications. Make sure it is set to FTP client.

3

I just set it to Ftp client, and I changed the Defense+ Security Policy under Trusted Application and I still get the same ftp code, 421.

4

Ranos. Just wondering of the issue is firewall related or Filezilla related. Filezilla attempts to make multiple connections with the ftp server, where MS FTP uses a single connection. Check this forum.

http://www.110mb.com/forum/resolved-421-too-many-connections-1-from-this-ip-ftp-error-t2820.0.html

Hope it helps

Cheers

5

It did help! Thank you very much! :slight_smile:

… I think I know the problem on my end

I set my IIS FTP to max connections of 1, so this is probably why I have been getting that ftp error code. I’ll test that out.

Thanks again!