Linux distributions
TMA-ROCKY9-5.1.11
Ensure sshd DisableForwarding is enabled
Descrição
The DisableForwarding parameter disables all forwarding features, including X11, ssh-agent(1), TCP and StreamLocal. This option overrides all other forwarding-related options and may simplify restricted configurations. • X11Forwarding provides the ability to tunnel X11 traffic through the connection to enable remote graphic connections. • ssh-agent is a program to hold private keys used for public key authentication. Through use of environment variables the agent can be located and automatically used for authentication when logging in to other machines using ssh. • SSH port forwarding is a mec
Como é verificado
Método de auditoria: Comando 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=$(bash -c 'sshd -T | grep -i disableforwarding' 2>&1); printf '%s\n' "$o" | tr -s ' \t' ' ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'disableforwarding yes' || { echo step1: missing 'disableforwarding yes'; return 1; }; }; if alt0; then echo compliant; fi- Saída esperada
compliant
Como é corrigido
Método de correção: Orientação ou patch de infraestrutura
Edit the /etc/ssh/sshd_config file to set the DisableForwarding parameter to yes above any Include entry as follows: DisableForwarding yes
Propriedades
- Sistemas operacionais
- rocky-9
- Tags
- cis-convertedlinux
- Referência
- CIS Rocky Linux 9 Benchmark v3.0.0 - 5.1.11
Verificar este host
Execute isto em uma máquina que você tenha permissão para auditar. A varredura é somente leitura.
tmaegis scan --target linux