TMA-COS-5.1.18
Ensure SSH warning banner is configured
NiedrigStufe 2Automatisiertcos
Beschreibung
The Banner parameter specifies a file whose contents must be sent to the remote user before authentication is permitted. By default, no banner is displayed. Banners are used to warn connecting users of the particular site's policy regarding connection. Presenting a warning message prior to the normal user login may assist the prosecution of trespassers on the computer system.
So wird geprüft
Prüfmethode: Shell-Befehl
shell
alt0() { command -v grep >/dev/null 2>&1 || { echo "step1: grep not installed"; return 1; }; command -v sshd >/dev/null 2>&1 || { echo "step1: sshd not installed"; return 1; }; o=$(bash -c 'sshd -T | grep banner' 2>&1); printf '%s\n' "$o" | tr -s ' \t' ' ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'Banner /etc/issue.net' || { echo step1: missing 'Banner /etc/issue.net'; return 1; }; }; if alt0; then echo compliant; fi- Erwartete Ausgabe
compliant
So wird behoben
Behebungsmethode: Anleitung oder Infrastruktur-Patch
Edit the /etc/ssh/sshd_config file to set the parameter as follows: Banner /etc/issue.net
Eigenschaften
- Betriebssysteme
- Beliebig
- Tags
- container-optimized-oscosssh
- Referenz
- CIS Google Container-Optimized OS Benchmark v1.2.0 - 5.1.18 Ensure SSH warning banner is configured
Diesen Host prüfen
Führen Sie dies auf einem Rechner aus, den Sie prüfen dürfen. Der Scan ist schreibgeschützt.
shell
tmaegis scan --target cos --level 2