Container Security Setup
Preparing a Secure Container Environment
Prerequisites for Container Security
Before deploying containers, ensure your system meets critical security requirements:
graph TD
A[System Preparation] --> B[Docker Installation]
B --> C[Security Configuration]
C --> D[Access Control]
D --> E[Monitoring Setup]
## Update system packages
sudo apt-get update && sudo apt-get upgrade -y
## Install necessary security tools
sudo apt-get install -y \
docker.io \
docker-compose \
auditd \
clamav \
rkhunter
Docker Security Configuration
Docker Daemon Security Settings
Configuration |
Recommended Setting |
Purpose |
User Namespace |
Enable |
Reduce root privileges |
Seccomp Profile |
Strict |
Limit system calls |
AppArmor |
Enable |
Mandatory access control |
Implementing Security Profiles
## Create custom Docker security profile
sudo nano /etc/docker/daemon.json
{
"icc": false,
"live-restore": true,
"userland-proxy": false,
"disable-legacy-registry": true,
"no-new-privileges": true
}
## Restart Docker daemon
sudo systemctl restart docker
Access Control and Authentication
User and Group Management
## Create dedicated docker group
sudo groupadd docker
## Add user to docker group with limited privileges
sudo usermod -aG docker $USER
## Set strict permissions
sudo chmod 750 /var/run/docker.sock
Container Image Security
Image Scanning and Verification
## Install Trivy for image vulnerability scanning
wget https://github.com/aquasecurity/trivy/releases/download/v0.30.4/trivy_0.30.4_Linux-64bit.deb
sudo dpkg -i trivy_0.30.4_Linux-64bit.deb
## Scan Docker image for vulnerabilities
trivy image ubuntu:22.04
Network Security Configuration
Container Network Isolation
## Create custom bridge network
docker network create --driver bridge --subnet 172.28.0.0/16 secure_network
## Run container with network restrictions
docker run --network=secure_network \
--network-alias=secure_container \
--read-only \
ubuntu:22.04
Monitoring and Logging
Security Monitoring Setup
## Configure auditd for container monitoring
sudo apt-get install auditd
sudo systemctl enable auditd
sudo auditctl -w /var/lib/docker -k docker
Best Practices for LabEx Container Security
- Regularly update base images
- Implement least privilege principle
- Use minimal base images
- Scan images before deployment
- Enable runtime security monitoring
By following these comprehensive setup guidelines, cybersecurity professionals can create robust, secure container environments that minimize potential vulnerabilities and protect critical infrastructure.