Ensure telnet server services are not in use

中等級 1自動化linux

說明

The telnet-server package contains the telnet daemon, which accepts connections from users from other systems via the telnet protocol.

檢查方式

稽核方法: Shell 指令

shell

alt0() { command -v rpm >/dev/null 2>&1 || { echo "step1: rpm not installed"; return 1; }; o=$(bash -c 'rpm -q telnet-server' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'package telnet-server is not installed' || { echo step1: missing 'package telnet-server is not installed'; return 1; }; }; alt1() { command -v grep >/dev/null 2>&1 || { echo "step1: grep not installed"; return 1; }; command -v systemctl >/dev/null 2>&1 || { echo "step1: systemctl not installed"; return 1; }; o=$(bash -c 'systemctl is-enabled telnet.socket 2>/dev/null | grep '"'"'enabled'"'"'' 2>/dev/null); [ -z "$o" ] || { echo "step1: $o" | head -c 300; return 1; }; command -v grep >/dev/null 2>&1 || { echo "step2: grep not installed"; return 1; }; command -v systemctl >/dev/null 2>&1 || { echo "step2: systemctl not installed"; return 1; }; o=$(bash -c 'systemctl is-active telnet.socket 2>/dev/null | grep '"'"'^active'"'"'' 2>/dev/null); [ -z "$o" ] || { echo "step2: $o" | head -c 300; return 1; }; }; if alt0 || alt1; then echo compliant; fi

預期輸出: compliant

修補方式

修補方法: 操作指南或基礎設施修補檔

Run the following commands to stop telnet.socket and remove the telnet-server package: # systemctl stop telnet.socket # dnf remove telnet-server - OR - - IF - a package is installed and is required for dependencies: Run the following commands to stop and mask telnet.socket: # systemctl stop telnet.socket # systemctl mask telnet.socket

屬性

作業系統: rocky-9
標籤: cis-convertedlinux
參考資料: CIS Rocky Linux 9 Benchmark v3.0.0 - 2.1.15

檢查此主機

請在您有權稽核的機器上執行此指令。掃描為唯讀操作。

shell

tmaegis scan --target linux