Ensure SSH LogLevel is appropriate

SrednjaNivo 1Automatskalinux

Opis

INFO level is the basic level that only records login activity of SSH users. In many situations, such as Incident Response, it is important to determine when a particular user was active on a system. The logout record can eliminate those users who disconnected, which helps narrow the field. VERBOSE level specifies that login and logout activity as well as the key fingerprint for any SSH key used for login will be logged. This information is important for SSH key management, especially in legacy environments.

Kako se proverava

Metod provere: Komanda ljuske

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=$(bash -c 'sshd -T | grep loglevel' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'LogLevel VERBOSE' || { echo step1: missing 'LogLevel VERBOSE'; return 1; }; }; if alt0; then echo compliant; fi

Očekivani izlaz: compliant

Kako se ispravlja

Metod ispravke: Smernica ili zakrpa infrastrukture

Edit the /etc/ssh/sshd_config file to set the parameter as follows: LogLevel VERBOSE or LogLevel INFO Restart sshd : systemctl restart sshd

Svojstva

Operativni sistemi: alinux-2
Oznake: cis-convertedlinux
Referenca: CIS Aliyun Linux 2 Benchmark v1.0.0 ARCHIVE - 5.2.5

Proverite ovaj računar

Pokrenite ovo na računaru za koji imate dozvolu za proveru. Skeniranje radi u režimu samo za čitanje.

shell

tmaegis scan --target linux