Configuring SSH - restrict Cipher list

높음레벨 1수동 검토ibm-i

설명

This variable limits the types of ciphers that SSH can use during communication. Based on research conducted at various institutions, it was determined that the symmetric portion of the SSH Transport Protocol (as described in RFC 4253) has security weaknesses that allowed recovery of up to 32 bits of plaintext from a block of ...

점검 방법

감사 방식: 수동 검토

이 권장 사항은 자동으로 점검할 수 없습니다. --include-manual 옵션을 전달하면 스캔 결과에 이 지침과 함께 표시됩니다.

DSPF '/QOpenSys/QIBM/UserData/SC1/OpenSSH/etc/sshd_config' On the Control field, type Ciphers and press F16 (shift F4) Control: Ciphers_________________________________________ The display should yield the following output: Ciphers aes256-ctr,aes192-ctr,aes128-ctr

조치 방법

조치 방식: 가이드 또는 인프라 패치

EDTF '/QOpenSys/QIBM/UserData/SC1/OpenSSH/etc/sshd'_config file: Insert: Ciphers aes256-ctr,aes192-ctr,aes128-ctr Re-cycle the sshd daemon to pick up the configuration changes:

속성

운영 체제: 모두
태그: ibm-issh
참고 자료: CIS IBM i V7R5M0 Benchmark v2.1.0 - 5.4.7 Configuring SSH - restrict Cipher list