Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

avoid vsftpd changing modification time in uploads

Posted on 2010-11-28
4
2,045 Views
Last Modified: 2013-11-22
Hi
I'm running a vsftpd on ubuntu server. All users can upload files fine using their username.
But, every time a new upload comes, (even without change any files), the mtime of all files on the vsftpd side is updated to the actual time. How can I avoid vsftpd to change the time? Or set the same time that remotefiles?
Is it possible?
0
Comment
Question by:sminfo
  • 2
4 Comments
 
LVL 29

Expert Comment

by:Michael Worsham
ID: 34227661
No, this is not possible. The time is obtained from the server-side the client is connecting into and written to the file. VSFTPD and other FTP daemons were coded this way to prevent a client from uploading older data to the server to overwrite newer data files for possible rootkits and other types of server-side abuse.

Example of abuse: If the VSFTPD did allow for keeping the older 'date' of the uploaded file, server-side applications could be at risk (i.e. allowing a modified (rootkit-based) version of '/usr/bin/passwd' to be uploaded while still showing the older date release of what was originally on the server).

0
 

Accepted Solution

by:
sminfo earned 0 total points
ID: 34228387
well... after some google's search.. I found that if you use ncftpput (ncftpd) as client with -y option it preserve the timestamp, so when you upload files the files are copied with the same time as in the source server.
0
 
LVL 68

Expert Comment

by:woolmilkporc
ID: 34228736
Yep,

and that's due to the setting "mdtm_write  YES" in vsftpd.conf, which is the default.

wmp
0
 

Author Closing Comment

by:sminfo
ID: 34276708
Issue solved!
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

If you have a server on collocation with the super-fast CPU, that doesn't mean that you get it running at full power. Here is a preamble. When doing inventory of Linux servers, that I'm administering, I've found that some of them are running on l…
Why Shell Scripting? Shell scripting is a powerful method of accessing UNIX systems and it is very flexible. Shell scripts are required when we want to execute a sequence of commands in Unix flavored operating systems. “Shell” is the command line i…
Learn how to navigate the file tree with the shell. Use pwd to print the current working directory: Use ls to list a directory's contents: Use cd to change to a new directory: Use wildcards instead of typing out long directory names: Use ../ to move…
Connecting to an Amazon Linux EC2 Instance from Windows Using PuTTY.

860 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question