7/31/2023 0 Comments Ssh keygen cisco asaVendors should really work on better and more detailed error messages. So error message was not really related nor giving correct clue what real reason of problem was. To solve the problem you have to add: aaa authentication enable console LOCAL Truth is that on out-of-the-box ASA this is also a symptom of lack of local AAA authentication. ![]() You must have at least one user account locally. While it’s a good idea to have enable password configured, it is optional for SSH. But if regenerating RSA key over and over using different modulus or changing SSH setting is not helping you doubt that’s correct reason. Enabling Cisco ASA SSH server Before we can connect to our Cisco ASA via SSH, we need to have a checklist of things we need to configure. Quick search at Google can confirm suspicious as this error happening when no RSA key is present on system. ![]() One would think that there is problem with SSH subsystem. Simple example from Cisco ASA showing following error message: %ASA-6-315011: SSH session from 192.168.1.2 on interface Management for user "root" disconnected by SSH server, reason: "Internal error" (0x00) Also Internet boards or vendor documentation may not be accurate or helpful, sometimes can even move troubleshooting in wrong area. We all know that error messages may be misleading.
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