Created SSH (markdown)

SSH.md

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+## Linux
+
+The tips below provide configuration details for accessing remote files over SSH and simply syncing your local content with the server.
+
+### Create system user
+
+1. `useradd -m nexy` - create new system user with its home directory
+2. `passwd nexy` - provide strong password
+3. `su nexy` - login as `nexy`
+4. `cd` - navigate to the home folder
+5. `mkdir /home/nexy/public` - create location for the public fies
+
+### Firewall
+
+Don't forget to open the SSH port to access your server remotely:
+
+``` bash
+sudo ufw allow 22
+```
+* replace `22` with your custom port (if it's not default)
+* use additional filters to allow access from specified hosts.
+
+### VSCode
+
+This example is useful for syncing text files on save. Make sure you have this [SSH extension](https://marketplace.visualstudio.com/items?itemName=Natizyskunk.sftp) installed to continue.
+
+Create `.vscode/sftp.json` file in the local project directory:
+
+``` .vscode/sftp.json
+{
+    "name": "",
+    "host": "",
+    "protocol": "sftp",
+    "port": 22,
+    "username": "nexy",
+    "password": "",
+    "remotePath": "/home/nexy/public",
+    "uploadOnSave": true,
+    "useTempFile": false,
+    "ignore": [
+        ".vscode"
+    ]
+}
+```
+* provide your actual SSH `name`,`host`,`username`,`password` and `remotePath`
+* save and restart VSCode to apply the changes