Ensure sshd access is configured

MittelStufe 1Automatisiertaix

Beschreibung

There are several options available to limit which users and group can access the system via SSH. It is recommended that at least one of the following options be leveraged: AllowUsers: o The AllowUsers variable gives the system administrator the option of allowing specific users to ssh into the system. The list consists of space separated user names. Audit: sshd -T must show at least one AllowUsers/AllowGroups/DenyUsers/DenyGroups; review the lists against site policy.

So wird geprüft

Prüfmethode: Shell-Befehl

shell

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

Erwartete Ausgabe: compliant

So wird behoben

Behebungsmethode: Anleitung oder Infrastruktur-Patch

Edit the /etc/ssh/sshd_config file to set one or more of the parameter above any Match set entries as follows: AllowUsers <userlist> -OR- AllowGroups <grouplist> -OR- DenyUsers <userlist> -OR- DenyGroups <grouplist> Re-cycle the sshd daemon to pick up the configuration changes: stopsrc -s sshd startsrc -s sshd Note: First occurrence of a option takes precedence, Match set statements withstanding.

Eigenschaften

Betriebssysteme: Beliebig
Tags: aixssh
Referenz: CIS IBM AIX 7 Benchmark v1.2.0 - 4.6.3.4 Ensure sshd access is configured

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