FTP file security
Hi!
I have an FTP server, chrooted to a directory, /ftproot. I have a couple hundred users whom use this for nothing but uploading files for someone else to download. So, everyone uses the same login.
This is currently running on a Windows box, and works great. Files can get created and uploaded, but not overwritten or deleted. So everyone can upload files, no one can ever overwrite them or delete them.
I am transferring this task over to a linux box, but having problems with setting up that type of security. I need to allow people to upload files and create folders, but not overwrite or delete anything even if they are the owner. I am running VSFTP, and have the file_open_mode set to 440 to set all new files, but they can still delete the new files in which they have R only permissions(I assume this is because they have RW on the root folder).
I've goofed around with setting up ACL's with setfacl, but I can't seem to find what the right combination of permissions/defaults is. I either lock myself out all together from doing anything, or I have full access to create/delete.
Anyone know what the correct permissions would be for the ACL list, or else maybe a different way of going about this?
Comments
-
You are talking about setting the directory permissions with a sticky bit. chmod +t {directory} or chmod 1666 {directory}. This sticky bit sets the permissions on all files within the specified directory to block all users who are not the owner of the file or the owner of the directory from deleting or modifying the files within the directory.
More info on the sticky bit can be found on the wikipedia page, http://en.wikipedia.org/wiki/Sticky_bit
If you incorporate separate logins into the ftp server, then these permissions would be sufficient.0 -
I've thought about using that, but the issue is seperate logins. I have been unable to talk the business into doing this, because it "complicates things more than just having the one login for such a simple and unimportant ftp site". That's why I'm trying to figure out if there is a way with ACL's, although I'm thinking it might be a lost cause as I've been unable to get them to do what I need.
Maybe there is a way to do it with SELinux roles...?0
Categories
- 9.1K All Categories
- 15 LFX Mentorship
- 68 LFX Mentorship: Linux Kernel
- 381 Linux Foundation Boot Camps
- 235 Cloud Engineer Boot Camp
- 75 Advanced Cloud Engineer Boot Camp
- 30 DevOps Engineer Boot Camp
- 8 Cloud Native Developer Boot Camp
- 987 Training Courses
- 15 LFC110 Class Forum
- 16 LFD102 Class Forum
- 106 LFD103 Class Forum
- 6 LFD121 Class Forum
- 56 LFD201 Class Forum
- 1 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum
- 20 LFD254 Class Forum
- 451 LFD259 Class Forum
- 90 LFD272 Class Forum
- 1 LFD272-JP クラス フォーラム
- 16 LFS200 Class Forum
- 716 LFS201 Class Forum
- LFS201-JP クラス フォーラム
- 283 LFS211 Class Forum
- 51 LFS216 Class Forum
- 27 LFS241 Class Forum
- 28 LFS242 Class Forum
- 19 LFS243 Class Forum
- 6 LFS244 Class Forum
- 12 LFS250 Class Forum
- LFS250-JP クラス フォーラム
- 114 LFS253 Class Forum
- 814 LFS258 Class Forum
- 8 LFS258-JP クラス フォーラム
- 54 LFS260 Class Forum
- 81 LFS261 Class Forum
- 18 LFS262 Class Forum
- 76 LFS263 Class Forum
- 15 LFS264 Class Forum
- 10 LFS266 Class Forum
- 10 LFS267 Class Forum
- 9 LFS268 Class Forum
- 6 LFS269 Class Forum
- 183 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- 191 LFW211 Class Forum
- 114 LFW212 Class Forum
- 880 Hardware
- 207 Drivers
- 74 I/O Devices
- 44 Monitors
- 115 Multimedia
- 205 Networking
- 98 Printers & Scanners
- 82 Storage
- 730 Linux Distributions
- 85 Debian
- 64 Fedora
- 12 Linux Mint
- 13 Mageia
- 22 openSUSE
- 127 Red Hat Enterprise
- 33 Slackware
- 13 SUSE Enterprise
- 349 Ubuntu
- 450 Linux System Administration
- 33 Cloud Computing
- 64 Command Line/Scripting
- Github systems admin projects
- 89 Linux Security
- 76 Network Management
- 105 System Management
- 45 Web Management
- 51 Mobile Computing
- 19 Android
- 19 Development
- 1.2K New to Linux
- 1.1K Getting Started with Linux
- 501 Off Topic
- 121 Introductions
- 193 Small Talk
- 19 Study Material
- 756 Programming and Development
- 243 Kernel Development
- 479 Software Development
- 903 Software
- 247 Applications
- 178 Command Line
- 2 Compiling/Installing
- 73 Games
- 314 Installation
- 26 All In Program
- 26 All In Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)