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Red Hat Enterprise Linux において、sshd を使用した Diffie-Hellman 鍵交換アルゴリズム

Solution Verified - Updated -

Issue

  • OpenSSH は Logjam: TLS vulnerabilities (CVE-2015-4000) の影響を受けますか?
  • OpenSSH で Diffie-Hellman 鍵交換アルゴリズムを無効にするにはどうしたら良いですか?
  • OpenSSH の moduli で計算前の primes を変更するにはどうしたら良いですか?

Environment

  • Red Hat Enterprise Linux (RHEL) 5
  • Red Hat Enterprise Linux (RHEL) 6
  • Red Hat Enterprise Linux (RHEL) 7
  • openssh-4.3p2-XX.el5 (RHEL 5)
  • openssh-5.3p1-XX.el6 (RHEL 6)

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