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To enable ECDSA host-key algorithms for Tectia Client, do the following:
In the Tectia Connections Configuration GUI, go to General > Default Connection > Server and clear the Use factory defaults check box.
ecdsa-sha2-nistp521 to the Enabled Hostkey Algorithms list.
Figure 2.3. Enabling elliptic curve host-key algorithms for Tectia Client
Once you have enabled the ECDSA host-key algorithms, you can change the order of the list using the red up and down arrow buttons. Tectia Client reads the list in the top-down order.
To enable ECDSA host keys for X.509, repeat the process described above but select the algorithms named
Reduce Secure Shell risk. Get to know the NIST 7966.
The NISTIR 7966 guideline from the Computer Security Division of NIST is a direct call to action for organizations regardless of industry and is a mandate for the US Federal government.
ISACA Practitioner Guide for SSH
With contributions from practitioners, specialists and SSH.COM experts, the ISACA “SSH: Practitioner Considerations” guide is vital best practice from the compliance and audit community.