ssh: no matching host key type found

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Azadeh Amirhosseini

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Jun 12, 2023, 2:05:13 PM6/12/23

to Ansible Project

Hi All,

i am using Redhat 9.0 and :
$ ssh -V
OpenSSH_8.7p1, OpenSSL 3.0.1 14 Dec 2021

after i run ssh command on an ip address, that i can connect to it by putty, i get the below error message:

Unable to negotiate with <ip address> port 22: no matching host key type found. Their offer: ssh-dss,ssh-rsa

any recommendation please?

Andrew Latham

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Jun 12, 2023, 4:55:51 PM6/12/23

to ansible...@googlegroups.com

While this is not an Ansible question you can allow other types via SSH args like the following example for legacy hardware.

ssh -o KexAlgorithms=+diffie-hellman-group1-sha1 -o HostKeyAlgorithms=+ssh-dss -c aes256-cbc

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