On Tue, 2008-02-26 at 10:29 +0000, Rumpeltux wrote:
> I'm using a proftpd-server, but only with a server-certificate and no
> validation on client-side at all (which I know is bad, but still better
> than having plain-text ftp ;)).
> 

I switched to proftpd and have made some progress, but I can't
reproduce the problem yet. I am running hardy, and I can remember if
you said what you were running, so that may be a difference. I am
going to attach my proftpd config files that I have changed from the
defaults, and if you could tell me if anything differs to yours
that would be great.

I am running wput as

wput --force-tls file ftp://jw2328@localhost/
--20:13:20-- `no_att'
    => ftp://jw2328:xxxxx@127.0.0.1:21/no_att
Connecting to 127.0.0.1:21... connected! encrypted!
Logging in as jw2328 ... Error: Login-Sequence failed (Login incorrect.)
Skipping all files from this account...
FINISHED --20:13:23--
Transmission of 1 file failed.

is that correct?

> Don't wonder about the comment in the source, this is just what I put
> there after unsuccesfully trying to track down the problem.

Are you the author of wput? You might like to approach the upstream
gnutls yourself if you are, they are friendly and helpful.

I am happy to work with you trying to find out what the issue is
and take it to them myself.

Another possibility, rather than you waiting for me to set up a
server is to do what I do when I have one. I was going to run
wput under gdb and break on SSL_connect (or rather gnutls_handshake
that this thunks through to) and step through to find what returns
the error. I realise you may have better things to do with your
time though.

Thanks,

James



#
# /etc/proftpd/proftpd.conf -- This is a basic ProFTPD configuration file.
# To really apply changes reload proftpd after modifications.
# 

# Includes DSO modules
Include /etc/proftpd/modules.conf

# Set off to disable IPv6 support which is annoying on IPv4 only boxes.
UseIPv6				on

ServerName			"Debian"
ServerType			standalone
DeferWelcome			off

MultilineRFC2228		on
DefaultServer			on
ShowSymlinks			on

TimeoutNoTransfer		600
TimeoutStalled			600
TimeoutIdle			1200

DisplayLogin                    welcome.msg
DisplayChdir               	.message true
ListOptions                	"-l"

DenyFilter			\*.*/

# Use this to jail all users in their homes 
# DefaultRoot			~

# Users require a valid shell listed in /etc/shells to login.
# Use this directive to release that constrain.
# RequireValidShell		off

# Port 21 is the standard FTP port.
Port				21

# In some cases you have to specify passive ports range to by-pass
# firewall limitations. Ephemeral ports can be used for that, but
# feel free to use a more narrow range.
# PassivePorts                  49152 65534

# If your host was NATted, this option is useful in order to
# allow passive tranfers to work. You have to use your public
# address and opening the passive ports used on your firewall as well.
# MasqueradeAddress		1.2.3.4

# To prevent DoS attacks, set the maximum number of child processes
# to 30.  If you need to allow more than 30 concurrent connections
# at once, simply increase this value.  Note that this ONLY works
# in standalone mode, in inetd mode you should use an inetd server
# that allows you to limit maximum number of processes per service
# (such as xinetd)
MaxInstances			30

# Set the user and group that the server normally runs at.
User				proftpd
Group				nogroup

# Umask 022 is a good standard umask to prevent new files and dirs
# (second parm) from being group and world writable.
Umask				022  022
# Normally, we want files to be overwriteable.
AllowOverwrite			on

# Uncomment this if you are using NIS or LDAP via NSS to retrieve passwords:
# PersistentPasswd		off

# This is required to use both PAM-based authentication and local passwords
# AuthOrder			*mod_auth_pam.c mod_auth_unix.c

# Be warned: use of this directive impacts CPU average load!
# Uncomment this if you like to see progress and transfer rate with ftpwho
# in downloads. That is not needed for uploads rates.
#
# UseSendFile			off

# Choose a SQL backend among MySQL or PostgreSQL.
# Both modules are loaded in default configuration, so you have to specify the backend 
# or comment out the unused module in /etc/proftpd/modules.conf.
# Use 'mysql' or 'postgres' as possible values.
#
#<IfModule mod_sql.c>
# SQLBackend			mysql
#</IfModule>

TransferLog /var/log/proftpd/xferlog
SystemLog   /var/log/proftpd/proftpd.log

<IfModule mod_quotatab.c>
QuotaEngine off
</IfModule>

<IfModule mod_ratio.c>
Ratios off
</IfModule>


# Delay engine reduces impact of the so-called Timing Attack described in
# http://security.lss.hr/index.php?page=details&ID=LSS-2004-10-02
# It is on by default. 
<IfModule mod_delay.c>
DelayEngine on
</IfModule>

<IfModule mod_ctrls.c>
ControlsEngine        off
ControlsMaxClients    2
ControlsLog           /var/log/proftpd/controls.log
ControlsInterval      5
ControlsSocket        /var/run/proftpd/proftpd.sock
</IfModule>

<IfModule mod_ctrls_admin.c>
AdminControlsEngine off
</IfModule>

#
# Alternative authentication frameworks
#
#Include /etc/proftpd/ldap.conf
#Include /etc/proftpd/sql.conf

#
# This is used for FTPS connections
#
Include /etc/proftpd/tls.conf

# A basic anonymous configuration, no upload directories.

 <Anonymous ~ftp>
   User				ftp
   Group				nogroup
   # We want clients to be able to login with "anonymous" as well as "ftp"
   UserAlias			anonymous ftp
   # Cosmetic changes, all files belongs to ftp user
   DirFakeUser	on ftp
   DirFakeGroup on ftp
 
   RequireValidShell		off
 
   # Limit the maximum number of anonymous logins
   MaxClients			10
 
   # We want 'welcome.msg' displayed at login, and '.message' displayed
   # in each newly chdired directory.
   DisplayLogin			welcome.msg
   DisplayFirstChdir		.message
 
   # Limit WRITE everywhere in the anonymous chroot
   <Directory *>
     <Limit WRITE>
       DenyAll
     </Limit>
   </Directory>
 
    #Uncomment this if you're brave.
    <Directory incoming>
      # Umask 022 is a good standard umask to prevent new files and dirs
      # (second parm) from being group and world writable.
      Umask				022  022
               <Limit READ WRITE>
               DenyAll
               </Limit>
               <Limit STOR>
               AllowAll
               </Limit>
    </Directory>
 
 </Anonymous>


#
# Proftpd sample configuration for FTPS connections.
#
# Note that FTPS impose some limitations in NAT traversing.
# See http://www.castaglia.org/proftpd/doc/contrib/ProFTPD-mini-HOWTO-TLS.html
# for more information.
#

<IfModule mod_tls.c>
TLSEngine                               on
TLSLog                                  /var/log/proftpd/tls.log
TLSProtocol                             SSLv23
#
# Server's certificate
#
TLSRSACertificateFile                   /etc/ssl/certs/ssl-cert-snakeoil.pem
TLSRSACertificateKeyFile                /etc/ssl/private/ssl-cert-snakeoil.key
#
# CA the server trusts
#TLSCACertificateFile 			 /etc/ssl/certs/CA.pem
# or avoid CA cert
#TLSOptions                              NoCertRequest
#
# Authenticate clients that want to use FTP over TLS?
#
TLSVerifyClient                         off
#
# Are clients required to use FTP over TLS when talking to this server?
#
TLSRequired                             on
#
# Allow SSL/TLS renegotiations when the client requests them, but
# do not force the renegotations.  Some clients do not support
# SSL/TLS renegotiations; when mod_tls forces a renegotiation, these
# clients will close the data connection, or there will be a timeout
# on an idle data connection.
#
TLSRenegotiate                          required off
</IfModule>