I've made an SSH server using OpenSSH on my desktop Ubuntu (10.4) for tunneling. However, I'm noticing that the public account I made for my SSH (one to give to friends to use proxy) has SFTP access to crucial system files. I'm okay with SFTP being enabled on my account, but not on this public account. Does anyone know of anyway to either disable SFTP to that user, or restrict access to important files?
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I have FTPS setup on my ubuntu server 9.10 machine using vsftpd, and I want to disable the default SFTP server in openSSH. I didn't even know it was on until I accidentally connected to it. I tried searching the internet, and it seems that all I should have to do is comment out the line:
Code: Subsystem sftp /usr/lib/openssh/sftp-server restart sshd and it shouldn't work anymore.....except it does. Thinking that /etc/init.d/ssh restart may not have worked, I restarted the machine, but I can still connect over sFTP.
Can I allow SFTP for ANY , but SSH for some IP address
View 6 Replies View RelatedOn my Ubuntu 8.04.4 LTS webserver I desperately want to disable the Root account. But at the moment I am unable because I prefer to use Nautilus/Dolphin on my home laptop for SFTP. The graphical interface also helps when comparing multiple config files at once, something that being limited to NANO or PICO would make extremely painful. The problem is that if I don't use ROOT I can't perform any SSH or SFTP actions with a graphical interface, because I can't use SUDO without the terminal. Does anyone else leave root enabled? I have a non-standard port, disabled password authentication in favor of ssh keys, and I have a tarpit configured
View 2 Replies View Relatedallow sftp access to my Ubuntu system (happens to be desktop as it's also my main system) using accounts that are not able to login normally. (I have already managed to create such accounts.) These accounts need to be chrooted (also already accomplished with the openssh daemon settings.) Where I run into problems is that I want to give them (read only) access to files outside the chroot (on another partition in fact) and the matter if made more difficult because the directories to be shared are on NTFS-3G partitions (as they are a shared linux / windows storage drive). Is this possible and if so, what do I need to do?
Edit - Forgot to include versions
Ubuntu 10.10
openssh 1.5.5p1-4ubuntu4 (the one that comes with 10.10)
I'm running an SFPT server which my clients logon to using an FTP client. at the moment each client has a user name and password.
Thus far to improve security I've disabled root login but an looking for futrhrt ways to protect it from attack, having researched using google some of the security features suggested prevent the FPT clients from connecting.
Questions:
1- what further things can i do to secure my server that still allows it to be usable for FTP clients?
2- specifically is it possible to use non login pre-share key authentication?
How i set up the server is shown here: [url]
I have tried, to set this up, but failed what kind of ftp would you guys recomend, as i have been having slight problems over recent days, with unknowns logging onto my annon ftp server, delt with mind.
I am thinking about a proper login even for the annon account, fairly easy to setup.
right now i have vsftpd server installed for FTP access. I originally set it up for both FTP and SFTP, but found that SFTP disregarded any and all permission settings and user jailing that i had set up... so I am switching to just being standard FTP
so here is what's happening:
i've tried to disable SFTP in the sshd_config file, but i am still able to log into the ftp server under sftp through port 22 (which normally is ssh?) i've tried all kinds of things short of just blocking port 22, however I would prefer to be able to remote into my server via Putty (which has access restriction to ONLY allow my admin user account over ssh)..
if i want user should`t have more than 20 sftp connections to a server,is there any way we can limit no.of connections to a particular user on the server using ssh configuration
View 7 Replies View RelatedI've run into my first Linux/Unix roadblock and need support. I am creating a user strictly for SFTP and need them to login to a specific folder as well as set their navigate, write, and read permissions appropriatly but am having trouble. I was able to modify /etc/passwd to change their home location upon login but was warned that it was a bit dangerous to modify this file, even though my login test worked, and that I should look for an alternate solution in case shadow passwords were used. I'm reading up on chmod and understand the binary relationship but still can't seem to put the pieces together for each folder I'm working in. Below is what I need to satisfy: username for this test will be 'customer'
Example folder: /storage/company/files
1. User 'customer' needs to login to /storage/company/ by default.
2. User 'customer' needs browse, write, and read permissions to /storage/company/ and ALL files and subdirectories within this folder
3. User 'customer' must be UNABLE to navigate backwards toward folder root / or in general, navigate out of their primary home location.
I tried changing the sftpserver port but its not working, besides how can i restrict users from particular ips.Eg: users a can ssh from 192.168.*.*user b can sftp from 200.*.*
View 2 Replies View RelatedIf one uses a free ftp account to store private data such as bookmarks, they might prevent any eavesdropping by using ssh for the transfer (ftps), or alternatively sftp.
However, they would still have to trust the ftp hosting provider, because the data is stored unencrypted in the server.
Someone suggested putting all bookmarks in a small truecrypt volume instead and synchronizing this with the ftp server.
Performance issues aside, given that the plaintext only changes a little in each resync (only a bookmark is added usually), is the use of the truecrypt volume introducing a means for an eavesdropper to break the code?
i have a vsftpd server running well but i want to make/force all users to use sftp and not just ftp is this possible?
View 1 Replies View RelatedI am learning SELinux from LinuxCBT and I'm stuck at one place. Now video is on RHEL 4 (so tell me if things has changed since, cause I can't find anything related) shows how to disable SELinux security on httpd.first I don't know diff between initrc_t and uncofined_t; and second I don't know if something is wrong is everything is all right.
View 1 Replies View RelatedI'm trying to set up a Fedora 11 server so that users have only SFTP access. The relevant lines from my "/etc/ssh/sshd_config" are:
[Code]....
I can log in okay, I can type "cd /" and "cd upload", but when I try an "ls" command, I get: Couldn't get handle: Permission deniedand when I try to get the file "junk" (listed above), I get: Couldn't stat remote file: Permission deniedAnyone know what I'm doing wrong?
I need disable usb port access in ubuntu9.10. how to disable usb port in ubuntu9.10
View 9 Replies View RelatedI currently have a user on my Ubuntu server that I want to block completely from login. I know right now they login with SSH keys so they don't need to enter their SSH password. Can anyone tell me how to remove the SSH key login for their username and root user which I believe they use too and block SSH access alltogether.I will then just change the root SSH password.I'm terrified they will do some harm so I need them blocked out ASAP.
View 7 Replies View RelatedAnyone know how to disable IPv6 but still use IPv4?
View 6 Replies View RelatedSet up a few machines yesterday to test out some parallel code. Just for fun, I selected the "encrypt users files" option when setting up Ubuntu (10.10). I had never used the option in years past. Now I'm finding it a pain. EG., ssh requires me to already have a login to the machine before it will let me log in w/o a password (eg., using id_rsa.pub and authorized_keys).
Similarly, I have no reason to encrypt files on these machines. They're just crunching numbers. Is there an easy way to disable this? Or do I need to delete my original user and make another one (with all the su privelages, etc...) w/o an encrypted file system / home directory.
As a Windows user, I generated a pair of DSA keys from CoreFTP Lite and sent it to a third party that runs an SFTP server. They told me that a valid DSA key needs to have ssh-dsa at the start and the username@systemname at the end. CoreFTP generated neither the ssh-dsa header nor the username@systemname footer. I tried with WinSCP and it didn't generate them either. Is there a difference between how SFTP works between Windows and Linux? If I put a useraccount@systemname at the end of the text will it work? How would the Linux system validate that my system is called "systemname"? If it can't validate, what is the purpose of adding it?
View 2 Replies View RelatedIs there a way to modify the ssh_config and sshd_config files so that a user can scp but will not be allowed to ssh. I have done a search and found a tool name scponly but I really do not want to install anything. Most of the books I have only discuss how to use ssh.
View 3 Replies View RelatedI've enabled the root account on Ubuntu 9.10, however I want to stop it from being used to login via GDM. 9.10 seems to have a different GDM version, how can I carry this out under 9.10
View 9 Replies View RelatedInspite i have read through the sticky link but i have a query.
Example,
If you have your firefox under enforce mode in apparmor,are you still able to install an update / addon to it to a newer version.
If not,how to disable the apparmor in firefox.Is it as below?
Code:
I have tried everything to disable automatic login from the login screen (gdm). I've changed my password, I've changed the settings in System -> Admin ->Login Screen, and I've edited /etc/gdm/custom.conf (gdm.conf doesn't exist, but I created it just in case!).No auto login is set up, but I can't get it to ask for my password. This is affecting my ability to switch sessions, as I can't switch sessions without clicking on my name in gdm, and because it's set to auto login,
View 4 Replies View RelatedHow do I disable showing Usernames? I want to be prompted for BOTH un and pw. If it is necessary I could just change it so that it boots into a fullscreen terminal so that you would have to input "startx" and then username and password. Or I could just change it through gui or 3rd party software.
View 7 Replies View Relatedhaving a slow internet connection, I bought the all maverick repository on DVDs, copied the files on a usb drive and modified the apt sources file to consider the local repository only:
Code:
# deb file:/var/www/ubuntu_local/ ./
deb file:/var/www/maverick/dvd1/ maverick main universe restricted multiverse
deb file:/var/www/maverick/dvd2/ maverick main universe restricted multiverse
deb file:/var/www/maverick/dvd3/ maverick main universe restricted multiverse
[code]....
Even though I am reasonably sure it is safe, this local repository is not authenticated and I can only install package through the command line or synaptic, the Ubuntu Software Centre giving an error message "Requires installation of untrusted packages"...I thus would like to disable the apt authentication check for this local repository.
I wish to prevent a user account with sudo rights from mounting attached storage, i managed todo this with ubuntu Version 8 using gnome-polkit i think it was, however i'm not able todo this in 11.04 now , has anyone got a direction i can look in, i googled alot but my searches all come up with auto mounting or how to mount drives
View 1 Replies View RelatedI opened a specific port in my router and manually configured Limewire to use the same port for all traffic, but I notice when I disable and turn off Firestarter when on limewire, my searches go really fast and dowaloads zoom really fast also I am not running as root. Is this ok to temporarly stop the firewall when I am on Limewire and then turn it back on when finished?
View 9 Replies View RelatedHow can I disable the password request when i login? Not the password for the user but the password to connect to the net?
View 5 Replies View RelatedHow do I prevent/disable a file from being copied?
I would want someone to be able to see the content of a directory, then open the relevant document, but just for viewing purpose. They cannot copy the file, either through copy + paste or File/Save As.
Is that possible under Ubuntu?
