# Opening Ports on Core Compute VMs All TensorDock Core Compute VMs enjoy per-VM dedicated IPs. This allows your machine to enjoy a full range of ports, further streamlining your workflow. ## For Linux-based VMs (Optional): **By default, all ports on your Linux VMs are open, and UFW is disabled.** \ The following steps are for securing your VM with the UFW firewall, to help protect your VM. \ \ If you choose to use UFW to whitelist ports, **please always ensure you forward port 22**. Failure to do so can lock you out of your VM with no access back in. 1. Log into your VM (ssh user\@ip) 2. ``` sudo ufw enable ``` 3. ``` sudo ufw allow ``` Ensure you replace \ with the port you want to open. For example, `80` for HTTP, `443` for HTTPS, `22` for SSH. 4. ``` sudo ufw status verbose ``` The final step will show you a list of all your existing rules, including your newly added port forward. \
### Additional optional commands for Linux: #### Opening a port using a specific protocol: ``` sudo ufw allow / ``` Replace \ with TCP or UDP. \ Syntax: ``` sudo ufw allow 22/tcp ``` #### Opening a range of ports using a specific protocol: ``` sudo ufw allow :/ ``` Replace \ with TCP or UDP, and replace the \ and \ with your appropriate port range. \ Syntax: ``` sudo ufw allow 50000:50010/udp ``` ## For Windows-based VMs: Opening ports on your Windows-based VMs requires the use of Windows Firewall. 1. Search for "Windows Firewall" and open **Windows Defender Firewall with Advanced Security.**
2. On the left-hand bar, click "**Inbound Rule**" and then click "**New Rule..."** on the right-hand bar side. You should get a window pop-up as shown.
3. Select "**Port**" on the pop-up menu, and click "**Next >**". Next, select the desired protocol (only one can be selected at a time, a duplicate rule must be created if both protocols are desired), and then select "**Specific local ports**" and enter the port you'd like to open. Click "**Next >**".
4. Select **"Allow the Connection**" on the next menu, and click "**Next >**".
5. Ensure all boxes are checked in the preceding menu and click "**Next >**".
6. Add a name for your new rule and a description if you wish. Click "**Finish**" and verify that the rule has been added to your firewall.