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  1. Jenkins
  2. JENKINS-36648

SSH plugin : no matching cipher found - can't connect to server

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      Hello
      I'm not to able connect to some hosts via ssh plugin. Ssh plugin offers only the following ciphers:

      aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc
      

      But from security reasons server offers others.
      From sshd log:

      Jul 11 13:09:22 server auth|security:crit sshd[21561580]: fatal: no matching cipher found: client aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc server aes256-ctr,aes192-cbc,aes256-cbc [preauth]
      

      I've tested ssh-plugin the newest version from git (2.5-SNAPSHOT) with Jsch-1.53 but it doesn't work too.

      Best regards Piotr

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          dracorp Piotr Rogoża added a comment -

          By default JRE provides weak or insufficient cryptographic algorithms*. I've installed JCE Unlimited Strength Jurisdiction Policy Files and I'm able to connect with any host.

          *) https://docs.oracle.com/javase/7/docs/technotes/guides/security/SunProviders.html#importlimits

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          dracorp Piotr Rogoża added a comment - By default JRE provides weak or insufficient cryptographic algorithms*. I've installed JCE Unlimited Strength Jurisdiction Policy Files and I'm able to connect with any host. *) https://docs.oracle.com/javase/7/docs/technotes/guides/security/SunProviders.html#importlimits

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            • Assignee:
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              Reporter:
              dracorp Piotr Rogoża
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