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Visual Studio Code and Git get my IP blocked on my NAS

I don't know if this is an issue with Visual Studio Code or Ubuntu or Git or SSH or Synology. Therefor I am asking this question here, on the site I consider to be the jack of all trades.

I have a Ubuntu desktop PC and a Synology NAS (operating system is DSM). I have installed Git server on the NAS. On the PC I have a private programming hobby project which uses Git. I have a bare-repo on the NAS which acts as a Git remote for the project. The remote was added with the command git remote add origin ssh://gituser@192.168.XXX.XXX:/path/to/remote/repository/name.git. I have created a private-public key on the PC and the public-key has been moved to the NAS to path ~/.ssh/authorized_keys of the gituser.

On the PC, if I manually cd my way into the Git-project folder and use git push, then the remote server asks me my Synology password, I enter it, press ENTER and everything works. I can also clone the remote to another location on my PC and it works.

However, if I launch Visual Studio Code and open the project as a folder, then I get very quickly IP-banned by the Synology NAS due to exceeding the maximum allowed amount of failurous login attemps.

So the question is: What is going wrong here and how do I make it work?

I am guessing this happens because VSCode tries to fetch possible updates from the remote automatically but fails to do so because DSM demands a password. I tried to add the line PasswordAuthentication no to /etc/ssh/sshd_config on the NAS but this didn't do anything.

Solution

  • I did manage to make everything work. I'm not sure what it was that finally solved this but what I did:

    On my Synology NAS

    I decided to use my admin account for the Git remote connection.

    I used sudo chmod 700 on /volume1/homes/adminaccount and /volume1/homes/adminaccount/.ssh/ and /volume1/homes/adminaccount/.ssh/authorized_keys.

    I edited /etc/ssh/sshd_config and unommented #PubkeyAuthentication yes and #AuthorizedKeysFile .ssh/authorized_keys

    On my Ubuntu PC

    I edited my ~/.ssh/config and it looks like this now:

    # My NAS
Host 192.168.XXX.XXX
  Port 12345
  Preferredauthentications publickey
  IdentityFile ~/.ssh/myrsakey

    Result

    Everything seem to work. I can start Visual Studio Code, work on the project and push to the remote without getting my IP banned.

    Thank you @VonC for guiding me in the right direction.