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52 lines
1.5 KiB
Bash
52 lines
1.5 KiB
Bash
#!/usr/bin/env bash
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# vim:ts=4:sts=4:sw=4:et
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#
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# Author: Hari Sekhon
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# Date: 2021-02-05 14:48:56 +0000 (Fri, 05 Feb 2021)
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#
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# https://github.com/HariSekhon/DevOps-Bash-tools
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#
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# License: see accompanying Hari Sekhon LICENSE file
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#
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# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
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#
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# https://www.linkedin.com/in/HariSekhon
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#
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set -euo pipefail
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[ -n "${DEBUG:-}" ] && set -x
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srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# shellcheck disable=SC1090,SC1091
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. "$srcdir/lib/utils.sh"
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# shellcheck disable=SC2034,SC2154
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usage_description="
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Lists all risky GCP Firewall rules enabled in the current project that are open with source range 0.0.0.0/0 (whole internet can pass through)
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Such rules should be rare, eg:
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- your public website (and even then only if not using full Cloudflare Proxied protection)
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- GKE ingress generated GCP firewall rules (too open by default)
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- to lock them down see my adjacent Kubernetes-templates repo's service.yaml:
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https://github.com/HariSekhon/Kubernetes-templates/blob/master/service.yaml
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"
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# used by usage() in lib/utils.sh
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# shellcheck disable=SC2034
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usage_args="<project_id>"
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help_usage "$@"
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max_args 1 "$@"
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opts=()
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if [ -n "${1:-}" ]; then
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opts+=(--project "$1")
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fi
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gcloud compute firewall-rules list --format='table[no-heading](name,source_ranges)' --filter='disabled=false' "${opts[@]}" |
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{ grep "'0.0.0.0/0'" || : ; }
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