Steps to disable the diffie-hellman-group1-sha1 algorithm in SSH

Solution Unverified - Updated -

Issue

  • Vulnerability scanner detected one of the following in a RHEL-based system:

    Deprecated SSH Cryptographic Settings
          --truncated--
    key exchange    diffie-hellman-group1-sha1
    
    Disable weak Key Exchange Algorithms
    
  • How to disable the diffie-hellman-group1-sha1 Key Exchange Algorithm used in SSH?

Environment

  • Red Hat Enterprise Linux 8.x
  • Red Hat Enterprise Linux 7.x
  • Red Hat Enterprise Linux 6.x

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