Is it possible the key exchange veeam server is using?

[joshima]

Hello,

I have a problem with an Ubuntu backupproxy server. The Veeam server is trying to connect to the backupproxy server via ssh. However, this fails because the veeam server wants to use diffie-hellman-group1-sha1 but the backupproxy server does not accept diffie-hellman-group1-sha1. Is there any way I can change diffie-hellman-group1-sha1 on the veeam server?

[Mildur]

Hello Joshima

Which version of Veeam are you running? Are you running v11 or later? --> https://www.veeam.com/kb2061

The required cyphers and KEX/MAC algorithms are documented in our user guide. In my understanding diffie-hellman-group1-sha1 will be used as a fallback, if none of the other algorithms are working. Please make sure that they are accepted from your Ubuntu server and that you are using the latest Veeam Backup & Replication version:
https://helpcenter.veeam.com/docs/backu ... mendations

Please open a support case and let our support team have a look at your configuration if you still have issues after enabling the required cyphers and algorithms. Please provide me with the case number.

Best,
Fabian

[joshima]

Hey,

Iam using veeam v12. I upgraded it from v11 to v12 after that the backupproxy was disabled and the problem which I described occured.

[joshima]

Hello Joshima

Which version of Veeam are you running? Are you running v11 or later? --> https://www.veeam.com/kb2061

The required cyphers and KEX/MAC algorithms are documented in our user guide. In my understanding diffie-hellman-group1-sha1 will be used as a fallback, if none of the other algorithms are working. Please make sure that they are accepted from your Ubuntu server and that you are using the latest Veeam Backup & Replication version:
https://helpcenter.veeam.com/docs/backu ... mendations

Please open a support case and let our support team have a look at your configuration if you still have issues after enabling the required cyphers and algorithms. Please provide me with the case number.

Best,
Fabian

Hey thanks for the post. After several searches, I have now found out that the credentials are no longer accepted. These are no longer accepted so no connection is established via ssh. What could be the reasons for this?

[Mildur]

Hi Joshima

Did they have expired? Can you see the reason in the Linux logs why they weren't accepted?
A support case would still be helpful to troubleshoot the issue. I cannot tell you if you have faced a bug over a forum post.

Best,
Fabian

[joshima]

Hey thanks for your reply. The issue has been resolved