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Merged
cv merged 3 commits into from
Mar 25, 2026
Merged

fix(security): add iptables to Dockerfile for network policy enforcement #843

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b444ff8
fix(security): add iptables to Dockerfile for sandbox network policy …
ericksoa Mar 25, 2026
64af238
Merge remote-tracking branch 'origin/main' into fix/add-iptables-to-d…
ericksoa Mar 25, 2026
e299ceb
Merge branch 'main' into fix/add-iptables-to-dockerfile-v2
ericksoa Mar 25, 2026
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1 change: 1 addition & 0 deletions Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
git=1:2.39.5-0+deb12u3 \
ca-certificates=20230311+deb12u1 \
iproute2=6.1.0-3 \
iptables=1.8.9-2 \
&& rm -rf /var/lib/apt/lists/*

# gosu for privilege separation (gateway vs sandbox user).
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14 changes: 12 additions & 2 deletions test/e2e-gateway-isolation.sh
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Expand Up @@ -159,9 +159,19 @@ else
fail "symlink targets wrong:$FAILED_LINKS"
fi

# ── Test 10: Sandbox user cannot kill gateway-user processes ─────
# ── Test 10: iptables is installed (required for network policy enforcement) ──

info "10. Sandbox user cannot kill gateway-user processes"
info "10. iptables is installed"
OUT=$(run_as_root "iptables --version 2>&1")
if echo "$OUT" | grep -q "iptables v"; then
pass "iptables installed: $OUT"
else
fail "iptables not found — sandbox network policies will not be enforced: $OUT"
fi

# ── Test 11: Sandbox user cannot kill gateway-user processes ─────

info "11. Sandbox user cannot kill gateway-user processes"
# Start a dummy process as gateway, try to kill it as sandbox
OUT=$(docker run --rm --entrypoint "" "$IMAGE" bash -c '
gosu gateway sleep 60 &
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