Configuring SSH - restrict Cipher list

AltaNivel 1Revisión manualibm-i

Descripción

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 ...

Cómo se verifica

Método de auditoría: Revisión manual

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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

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

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:

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: ibm-issh
Referencia: CIS IBM i V7R5M0 Benchmark v2.1.0 - 5.4.7 Configuring SSH - restrict Cipher list