Initial commit - 611 cybersecurity skills across all subdomains

skills/hardening-docker-daemon-configuration/assets/template.md

@@ -0,0 +1,61 @@
+# Docker Daemon Hardening Checklist
+
+## Pre-Hardening
+
+- [ ] Document current daemon.json configuration
+- [ ] Run Docker Bench Security baseline
+- [ ] Identify running containers that may be affected
+- [ ] Schedule maintenance window
+- [ ] Backup existing /etc/docker/daemon.json
+
+## CIS Docker Benchmark v1.6 - Daemon Checks
+
+### Critical
+- [ ] 2.2 - Disable inter-container communication (`"icc": false`)
+- [ ] 2.9 - Enable user namespace remapping (`"userns-remap": "default"`)
+- [ ] 2.14 - Restrict new privileges (`"no-new-privileges": true`)
+- [ ] 2.7 - Configure TLS authentication (if remote access needed)
+
+### High
+- [ ] 2.6 - Use overlay2 storage driver
+- [ ] 2.16 - Disable userland proxy
+- [ ] 2.13 - Configure centralized logging
+- [ ] 2.8 - Set default ulimits
+- [ ] 2.17 - Apply custom seccomp profile
+
+### Medium
+- [ ] 2.15 - Enable live restore
+- [ ] 2.1 - Consider rootless mode
+- [ ] Docker socket permissions set to 660
+
+## Post-Hardening Verification
+
+- [ ] Docker daemon restarts successfully
+- [ ] All containers start correctly
+- [ ] Docker Bench shows improved score
+- [ ] TLS connection works (if configured)
+- [ ] Monitoring endpoints accessible
+- [ ] Log rotation working
+
+## Recommended daemon.json
+
+```json
+{
+  "icc": false,
+  "userns-remap": "default",
+  "no-new-privileges": true,
+  "log-driver": "json-file",
+  "log-opts": { "max-size": "10m", "max-file": "5" },
+  "storage-driver": "overlay2",
+  "live-restore": true,
+  "userland-proxy": false,
+  "experimental": false
+}
+```
+
+## Rollback Plan
+
+1. Stop Docker daemon: `sudo systemctl stop docker`
+2. Restore backup: `sudo cp /etc/docker/daemon.json.bak /etc/docker/daemon.json`
+3. Start Docker daemon: `sudo systemctl start docker`
+4. Verify containers: `docker ps`