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Synology DSM Guides & Tips🔗

Allow SSH With RSA KEY🔗

  • Log into Synology web UI as an administrator user
  • Enable “User Home”
  • Control Panel / User / Advanced, scroll down to “User Home”
  • Check “Enable user home service”, select an appropriate Location (i.e. volume1)
  • Click “Apply”

SSH into Synology as Admin User

sudo chmod 755 /volume1/homes/*youruser*
mkdir ~/.ssh && chmod 0700 ~/.ssh
touch ~/.ssh/authorized_keys && chmod 0644 ~/.ssh/authorized_keys
echo PUCLICK_Key_STRING >> ~/.ssh/authorized_keys

Configure the Synology’s SSH service to allow login by key

sudo vi /etc/ssh/sshd_config
  • Uncomment line that says: #PubkeyAuthentication yes
  • Uncomment the line that says: #AuthorizedKeyFiles .ssh/authorized_keys
  • Add a line: PasswordAuthentication no
  • Make sure that line is uncommented that says: ChallengeResponseAuthentication no
  • Save the file and exit the editor
sudo synoservicectl --restart sshd

You should now connect with rsa key.

Disable DSM Listening on 80,443 Ports🔗

sed -i -e 's/80/81/' -e 's/443/444/' /usr/syno/share/nginx/server.mustache /usr/syno/share/nginx/DSM.mustache /usr/syno/share/nginx/WWWService.mustache

synoservicecfg --restart nginx

Installing VM Tools on Linux VM🔗

On Debian:

sudo add-apt-repository universe
sudo apt-get install qemu-guest-agent

On CentOS 7:

yum install -y qemu-guest-agent

On CentOS 8:

dnf install -y qemu-guest-agent

Auto DSM Config Backup🔗

Since synology's dms doesn't provide any auto-backup for it's configuration i've made a smile script that can be run at from the "Task Scheduler". The script invokes synoconfbkp cli command that will dump the config file to provided folder. I use dropbox's folder in my case (This will sync my files to DropBox account). It append a date and hostname. It also checks the same folder for files older of 60 days and deletes them so your storage won't be flodden with files from older than 2 month. I've scheduled the script to run onces a day with the "Task Scheduler"

To use it create new Task Scheduler choose a scheduler append the script to "Run Command" at "Task Settings" don't forget to change to destinations.

synoconfbkp export --filepath=/volume1/activeShare/Dropbox/SettingsConfigs/synologyConfigBackup/$(hostname)_$(date +%y%m%d).dss && find /volume1/activeShare/Dropbox/SettingsConfigs/synologyConfigBackup -type f -mtime +60 -exec rm -f {} \;

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