cannot write a remotely mounted file

Lorenzo_Kospecz

8/29/24, 3:54 PM

Before opening my nextcloud server to the internet i'm trying to harden its security by configuring its sshd_config file. Its a ubuntu core server so i can edit files only through sshfs.

The thing is, when i use sshfs to mount the server file system on my desktop then try to edit the file from the mountpoint i chose, i get permission denied for writing that file. I can view the file and the whole mounted file system but cannot edit it, despite sudoing.

I tried sshfs with the -o allow_root argument and the -o uid=0,gid=0 which gave me no success.

Thanks in advance for your help

1 + 3

server

permissions

security

sshfs

ubuntu-core

waltinator

8/29/24, 4:40 PM

Check the `mount` options do: `mount`. Is the filesystem mounted Read Only (`ro`)?

Lorenzo_Kospecz

8/29/24, 9:12 PM

the output of mount for the file system are the following : (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other). So it seems in read and write (rw)

vidarlo

8/29/24, 10:29 PM

What remote user did you connect as? allow_root is local to your system; the remote writes are *always* carried out as the user you logged in to the remote system as.

Score:0

Ubuntu

vidarlo

8/29/24, 10:29 PM

If you do sshfs [email protected], all writes are don as user, no matter what local user you do the modifications under.

Normal user accounts does not have access to modify system configuration files.

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