Related

cpu from 13% to 100% in one minute Question Question
PHP Error Log: authz_core:error - For files that don't exists on my server Question Question

Question

how can I make folder accessible by one user

Posted October 13, 2018 2.3k views
ApacheDigitalOceanConfiguration ManagementUbuntu 18.04

I’ve followed this tutorial to make apache virtual hosts.

https://www.digitalocean.com/community/tutorials/how-to-set-up-apache-virtual-hosts-on-ubuntu-14-04-lts

What I want is to restrict user access to the domain path [ /var/www/domain.com/public_html ].

e.g: user “none” can only operate on this folder { /var/www/devmuath.com/public_html }

  • he can use SSH - and sftp programs like filezilla

I’m still new on Ubuntu, so please give step by step instructions.

Add a comment
ibrhajjaj
By:
ibrhajjaj

Related

cpu from 13% to 100% in one minute Question Question
PHP Error Log: authz_core:error - For files that don't exists on my server Question Question

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

×
3 answers
unixynet October 14, 2018

This is a good tutorial on how to do that: https://www.tecmint.com/restrict-sftp-user-home-directories-using-chroot/

Make sure to disable SSH login just like the tutorial shows. Otherwise it’s easy to circumvent the restrictions.

Reply Report
  • ibrhajjaj October 14, 2018

    Thanks for your reply, but Whenever I change the sshd_config 

    Subsystem sftp internal-sftp

   Match Group sftpgroup
   ChrootDirectory /home
   ForceCommand internal-sftp
   X11Forwarding no
   AllowTcpForwarding no

    ChrootDirectory /home or /var/www

    I get this error

    Oct 14 12:22:29 ibrahim systemd[1]: ssh.service: Control process exited, code=exited status=255
Oct 14 12:22:29 ibrahim systemd[1]: ssh.service: Failed with result 'exit-code'.
Oct 14 12:22:29 ibrahim systemd[1]: Failed to start OpenBSD Secure Shell server.
Oct 14 12:22:30 ibrahim systemd[1]: ssh.service: Service hold-off time over, scheduling restart.
Oct 14 12:22:30 ibrahim systemd[1]: ssh.service: Scheduled restart job, restart counter is at 5.
Oct 14 12:22:30 ibrahim systemd[1]: Stopped OpenBSD Secure Shell server.
Oct 14 12:22:30 ibrahim systemd[1]: ssh.service: Start request repeated too quickly.
Oct 14 12:22:30 ibrahim systemd[1]: ssh.service: Failed with result 'exit-code'.
Oct 14 12:22:30 ibrahim systemd[1]: Failed to start OpenBSD Secure Shell server.
    Reply Report
unixynet October 15, 2018

What’s in the error log? Run this right after you attempt a restart of sshd:

journaltctl -xe
Reply Report
  • ibrhajjaj October 15, 2018

    Thanks, It did work.

    Now when I tried to log in using SFTP or ssh I get this 

    Connection reset by 2X.X9.18.X0 port 22
Connection closed

    Long error using ssh -vv | sftp -vv

    OpenSSH_7.7p1, OpenSSL 1.0.2o  27 Mar 2018
debug1: Reading configuration data /etc/ssh/ssh_config
debug2: resolve_canonicalize: hostname 2X.X9.18.X0 is address
debug2: ssh_connect_direct: needpriv 0
debug1: Connecting to 2X.X9.18.X0 [2X.X9.18.X0 ] port 22.
debug1: Connection established.
debug1: key_load_public: No such file or directory
debug1: identity file /c/Users/I B R A H I M HA/.ssh/id_rsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /c/Users/I B R A H I M HA/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /c/Users/I B R A H I M HA/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /c/Users/I B R A H I M HA/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /c/Users/I B R A H I M HA/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /c/Users/I B R A H I M HA/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /c/Users/I B R A H I M HA/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /c/Users/I B R A H I M HA/.ssh/id_ed25519-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /c/Users/I B R A H I M HA/.ssh/id_xmss type -1
debug1: key_load_public: No such file or directory
debug1: identity file /c/Users/I B R A H I M HA/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_7.7
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.6p1 Ubuntu-4
debug1: match: OpenSSH_7.6p1 Ubuntu-4 pat OpenSSH* compat 0x04000000
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to 2X.X9.18.X0 :22 as 'mouath'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: local client KEXINIT proposal
 debug2: compression ctos: none,zlib@openssh.com,zlib
debug2: compression stoc: none,zlib@openssh.com,zlib
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug2: peer server KEXINIT proposal
 debug2: host key algorithms: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519
debug2: compression stoc: none,zlib@openssh.com
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: aes128-ctr MAC: umac-64-etm@openssh.com compression: none
debug1: kex: client->server cipher: aes128-ctr MAC: umac-64-etm@openssh.com compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
 debug1: Host '2X.X9.18.X0' is known and matches the ECDSA host key.
debug1: Found key in /c/Users/I B R A H I M HA/.ssh/known_hosts:1
debug2: set_newkeys: mode 1
debug1: rekey after 4294967296 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug2: set_newkeys: mode 0
debug1: rekey after 4294967296 blocks
debug2: key: /c/Users/I B R A H I M HA/.ssh/id_rsa (0x0)
debug2: key: /c/Users/I B R A H I M HA/.ssh/id_dsa (0x0)
debug2: key: /c/Users/I B R A H I M HA/.ssh/id_ecdsa (0x0)
debug2: key: /c/Users/I B R A H I M HA/.ssh/id_ed25519 (0x0)
debug2: key: /c/Users/I B R A H I M HA/.ssh/id_xmss (0x0)
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521>
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password
debug1: Next authentication method: publickey
debug1: Trying private key: /c/Users/I B R A H I M HA/.ssh/id_rsa
debug1: Trying private key: /c/Users/I B R A H I M HA/.ssh/id_dsa
debug1: Trying private key: /c/Users/I B R A H I M HA/.ssh/id_ecdsa
debug1: Trying private key: /c/Users/I B R A H I M HA/.ssh/id_ed25519
debug1: Trying private key: /c/Users/I B R A H I M HA/.ssh/id_xmss
debug2: we did not send a packet, disable method
debug1: Next authentication method: password
mouath@2X.X9.18.X0's password:
debug2: we sent a password packet, wait for reply
mouath@2X.X9.18.X0's password:
debug2: we sent a password packet, wait for reply
debug1: Authentication succeeded (password).
Authenticated to 2X.X9.18.X0([2X.X9.18.X0]:22).
debug1: channel 0: new [client-session]
debug2: channel 0: send open
debug1: Requesting no-more-sessions@openssh.com
debug1: Entering interactive session.
debug1: pledge: network
Connection reset by 2X.X9.18.X0  port 22
debug1: Authentications that can continue: publickey,password
Permission denied, please try again.
mouath@2X.X9.18.X0's password:
debug2: we sent a password packet, wait for reply
debug1: Authentications that can continue: publickey,password
Permission denied, please try again.
mouath@2X.X9.18.X0's password:
debug2: we sent a password packet, wait for reply
debug1: Authentications that can continue: publickey,password
debug2: we did not send a packet, disable method
debug1: No more authentication methods to try.
mouath@2X.X9.18.X0 : Permission denied (publickey,password).
Connection closed

    Screenshot from /etc/ssh/sshd_config
    https://i.imgur.com/QzNXBSD.png

    Reply Report
ibrhajjaj October 16, 2018

Sorry for being late!

I tried to log in to the server from the user who has the problem and here is the log.

Oct 16 18:42:17 ibrahimh sshd[9947]: Accepted password for root from 2X.X9.18.X0 port 16041 ssh2
Oct 16 18:42:17 ibrahimh sshd[9947]: pam_unix(sshd:session): session opened for user root by (uid=0)
Oct 16 18:42:17 ibrahimh systemd-logind[789]: New session 882 of user root.


Oct 16 18:45:57 ibrahimh sshd[10048]: Accepted password for mouath from 2X.X9.18.X0 port 16394 ssh2
Oct 16 18:45:57 ibrahimh sshd[10048]: pam_unix(sshd:session): session opened for user mouath by (uid=0)
Oct 16 18:45:57 ibrahimh systemd: pam_unix(systemd-user:session): session opened for user mouath by (uid=0)
Oct 16 18:45:57 ibrahimh systemd-logind[789]: New session 883 of user mouath.
Oct 16 18:45:58 ibrahimh sshd[10142]: fatal: bad ownership or modes for chroot directory component "/var/www/"
Oct 16 18:45:58 ibrahimh sshd[10048]: pam_unix(sshd:session): session closed for user mouath
Oct 16 18:45:58 ibrahimh systemd-logind[789]: Removed session 883.
Reply Report
  • ibrhajjaj October 16, 2018

    You are the best thanks for letting me know where my mistakes.

    Now I have one more little problem the chown work very good ( “ he can’t delete/add/update ”) but it still shows other folders is there is a way that I can hide them?

    in the below Gif, the user has permission for the first folder not and he doesn’t have permission for the rest folders.

    https://i.imgur.com/E6TQKTD.gif

    Reply Report
    • unixynet October 17, 2018

      You’ll need to further limit the chroot. So instead of /var/www, set it to /var/www/html to limit it to html/. Otherwise the user will be able to see all readable files and folders under /var/www

      Reply Report
Submit an Answer

Related

Looking for something else?

Ask a new question Search for more help