Cygwin SSH to Ubuntu – “no mutual signature algorithm”
After updates to Cygwin and Ubuntu I was no longer able to ssh to the Ubuntu servers using a certificate for authentication.
Running ssh with the -vvv switch revealed this error:
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debug1: send_pubkey_test: no mutual signature algorithm |
Workaround is to add this line to the client configuration file (~/.ssh/config):
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PubkeyAcceptedKeyTypes +rsa-sha2-256,rsa-sha2-512 |