= Fix: ASDM: Fail to establish SSH session =

**Summary**: A Fix for a Cisco ASA firewall when you can't login over SSH. \\
**Date**: Around 2007 \\
**Refactor**: 16 January 2025: Checked links and formatting. \\
{{tag>fix cisco}}

Symptom: Unable to establish a SSH session with a Cisco ASA firewall. After logging in using ASDM you see this error in the log:
<code>
fail to establish SSH session because RSA host key retrieval failed
</code>

To fix, go to the command line interface:

ASDM -> Tools -> Command Line Interface

And enter these commands:

<code>
conf t
crypto key generate rsa general-keys modulus 1024
</code>

Now you can establish a connection over SSH.