Re: [gentoo-user] vsftpd anonymous upload illegal PORT command

[Mick]

On Thursday 03 Aug 2017 08:13:18 Walter Dnes wrote:
>   I'm trying to upload files from an OS/2 VM in machine A to anononymous
> upload on another machine on my home LAN.  I'm using the allegedly "very
> simple" ftpd and getting nowhere, and Google isn't helping.  To simplify
> things, I built vsftpd without ssl, and iptables is off on both
> machines.  I don't think it's related to PASV, because the ancient ftp
> client on the OS/2 VM doesn't understand the "ftp -p" option.  My
> /etc/vsftpd/vsftpd.conf file is...
>
> listen=YES
> local_enable=NO
> anonymous_enable=YES
> anon_upload_enable=YES
> write_enable=YES
> anon_mkdir_write_enable=YES
> anon_root=/home/ftp

Is this writeable?

> pasv_enable=YES
> pasv_min_port=30000
> pasv_max_port=30100
> port_enable=YES
> allow_writeable_chroot=YES
>
>   I successfully log in as user "anonymous", password "anonymous",
> execute "bin".  When I try uploading a file, I get the 500 PORT error.
> Anybody have a working config?  Or another simpler ftpd server?

For these kind of jobs I tend to default to netcat (nc) or socat in listening 
mode, because of its simplicity.  However, I am not familiar with OS/2 to know 
what it comes with.  If it has busybox or you can install it there you can use 
busybox nc and/or busybox ftpd.

In answering your question, I think the error you are getting is related to 
the client not using a passive connection type.  Can you enable passive 
*after* it connects?

ftp> passive
ls

Alternatives are the busybox ftpd service or tftp, both of which are 
relatively easy to run.

-- 
Regards,
Mick