Enable DSA Host Key on Windows Secrure Shell Server

How to Enable/Disable DSA Host Key on the SSH Server for Windows

Note: DSA keys should not be used because SSH does not allow for strong DSA Keys. It is provided here for backward compatibility for customers that have configured and working systems.

How to Enable/Disable DSA Host Key on the SSH Server for Windows
bAllowDSAHostKey

The key is:

• For Win x64: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Georgia SoftWorks\GSW_SSHD\Parameters\bAllowDSAHostKey
• For Win x86: HKEY_LOCAL_MACHINE\SOFTWARE\Georgia SoftWorks\GSW_SSHD\Parameters\bAllowDSAHostKey

The default value is 0x01. (DSA Host Key is enabled to be used for server-to-client authentication). 0x00 will disable its use for server-to-client authentication.

The following is the procedure to change the registry key to enable or disable the use of the DSA Host Key.
1. Click the Start button at the bottom left corner of your screen
2. Click RUN
3. Type REGEDIT
4. Click OK
5. Select Registry Key:

• For Win x64: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Georgia SoftWorks\GSW_SSHD\Parameters\bAllowDSAHostKey
• For Win x86: HKEY_LOCAL_MACHINE\SOFTWARE\Georgia SoftWorks\GSW_SSHD\Parameters\bAllowDSAHostKey

6. Select the menu item Edit and then click on Modify
7. Enter the new value for the bAllowDSAHostKey and click OK

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The new value will take effect when the GSW SSHD service is restarted

Related Topics:

• SSH Server for Windows
• Enable/Disable RSA Host Key
• Enable/Disable ECDSA Host Key

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Document Number: FAQ-SSH-EX014001081519
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