Ensure sshd MaxAuthTries is configured

SedangLevel 1Otomatisaix

Deskripsi

The MaxAuthTries parameter specifies the maximum number of authentication attempts permitted per connection. When the login failure count reaches half the number, error messages will be written to the syslog file detailing the login failure. Setting the MaxAuthTries parameter to a low number will minimize the risk of successful brute force attacks to the SSH server. While the recommended setting is 4, set the number based on site policy. Audit: evaluates the effective configuration from `sshd -T` (Match blocks must be reviewed separately).

Cara pemeriksaan

Metode audit: Perintah shell

shell

command -v sshd >/dev/null 2>&1 || exit 1; out=$(sshd -T 2>/dev/null) || exit 1; r=compliant; for p in '^maxauthtries[[:blank:]]+[1-4]$'; do printf '%s\n' "$out" | grep -Eiq -- "$p" || r="not matched: $p"; done; echo "$r"

Output yang diharapkan: compliant

Cara perbaikan

Metode perbaikan: Panduan atau patch infrastruktur

Edit the/etc/ssh/sshd_config file to set the parameter as follows:: MaxAuthTries 4 Re-cycle the sshd daemon to pick up the configuration changes: stopsrc -s sshd startsrc -s sshd

Properti

Sistem operasi: Apa saja
Tag: aixssh
Referensi: CIS IBM AIX 7 Benchmark v1.2.0 - 4.6.3.12 Ensure sshd MaxAuthTries is configured

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shell

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