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Improve instructions for identifying and correcting RDP TLS certificate issues during WinApps setup

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Rohan Barar 2025-02-02 17:30:07 +11:00
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@ -428,18 +428,12 @@ AUTOPAUSE_TIME="300"
FREERDP_COMMAND=""
```
> [!NOTE]
> [!IMPORTANT]
> `RDP_USER` and `RDP_PASS` must correspond to a complete Windows user account and password, such as those created during Windows setup or for a domain user. User/PIN combinations are not valid for RDP access.
> [!NOTE]
> [!IMPORTANT]
> If you wish to use an alternative WinApps backend (other than `Docker`), uncomment and change `WAFLAVOR="docker"` to `WAFLAVOR="podman"` or `WAFLAVOR="libvirt"`.
> [!NOTE]
> If you encounter issues with tls certificate getting rejected, delete the existing `.pem` file with
> `rm ~/.config/freerdp/server/127.0.0.1_3389.pem` and run
> `xfreerdp3 /u:MyWindowsUser /p:MyWindowsPassword /v:127.0.0.1 /cert:tofu`
> to set up Trust On First Authentication. Then retry the `setup.sh` script.
#### Configuration Options Explained
- If using a pre-existing Windows RDP server on your LAN, you must use `RDP_IP` to specify the location of the Windows server. You may also wish to configure a static IP address for this server.
- If running a Windows VM using `libvirt` with NAT enabled, leave `RDP_IP` commented out and WinApps will auto-detect the local IP address for the VM.
@ -450,13 +444,65 @@ FREERDP_COMMAND=""
- If you enable `DEBUG`, a log will be created on each application start in `~/.local/share/winapps/winapps.log`.
- If using a system on which the FreeRDP command is not `xfreerdp` or `xfreerdp3`, the correct command can be specified using `FREERDP_COMMAND`.
### Step 4: Run the WinApps Installer
Run the WinApps installer.
### Step 4: Test FreeRDP
1. Test establishing an RDP session by running the following command, replacing the `/u:`, `/p:`, and `/v:` values with the correct values specified in `~/.config/winapps/winapps.conf`.
```bash
xfreerdp3 /u:"Your Windows Username" /p:"Your Windows Password" /v:192.168.122.2 /cert:tofu
# Or, if you installed FreeRDP using Flatpak
flatpak run --command=xfreerdp com.freerdp.FreeRDP /u:"Your Windows Username" /p:"Your Windows Password" /v:192.168.122.2 /cert:tofu
```
- Please note that the correct `FreeRDP` command may vary depending on your system (e.g. `xfreerdp`, `xfreerdp3`, etc.).
- Ensure you use the correct IP address for your Windows instance in the above command.
- If prompted within the terminal window, choose to accept the certificate permanently.
If the Windows desktop appears in a `FreeRDP` window, the configuration was successful and the correct RDP TLS certificate was enrolled on the Linux host. Disconnect from the RDP session and skip the following debugging step.
2. [DEBUGGING STEP] If an outdated or expired certificate is detected, the `FreeRDP` command will display output resembling the following. In this case, the old certificate will need to be removed and a new RDP TLS certificate installed.
```
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: CERTIFICATE NAME MISMATCH! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
The hostname used for this connection (192.168.122.2:3389)
does not match the name given in the certificate:
Common Name (CN):
RDPWindows
A valid certificate for the wrong name should NOT be trusted!
The host key for 192.168.122.2:3389 has changed
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the host key sent by the remote host is 8e:b4:d2:8e:4e:14:e7:4e:82:9b:07:5b:e1:68:40:18:bc:db:5f:bc:29:0d:91:83:f9:17:f9:13:e6:51:dc:36
Please contact your system administrator.
Add correct host key in /home/rohanbarar/.config/freerdp/server/192.168.122.2_3389.pem to get rid of this message.
```
If you experience the above error, delete any old or outdated RDP TLS certificates associated with Windows, as they can prevent `FreeRDP` from establishing a connection.
These certificates are located within `~/.config/freerdp/server/` and follow the naming format `<Windows-VM-IPv4-Address>_<RDP-Port>.pem` (e.g., `192.168.122.2_3389.pem`, `127.0.0.1_3389.pem`, etc.).
If you use FreeRDP for purposes other than WinApps, ensure you only remove certificates related to the relevant Windows VM. If no relevant certificates are found, no action is needed.
Following deletion, re-attempt establishing an RDP session.
### Step 5: Run the WinApps Installer
With Windows still powered on, run the WinApps installer.
```bash
bash <(curl https://raw.githubusercontent.com/winapps-org/winapps/main/setup.sh)
```
A list of supported additional arguments can be accessed by running `./setup.sh --help`.
Once WinApps is installed, a list of additional arguments can be accessed by running `winapps-setup --help`.
<img src="./demo/installer.gif" width=1000 alt="WinApps Installer Animation.">