Clear DefinitionsOracle Firewall
Pronunciation
[awr-uh-kl fire-wawl]
Analogy
Like a network firewall inspecting incoming packets to block malicious traffic before it enters your secure network.
Definition
A protective layer that validates, sanitizes, and filters incoming oracle data submissions to prevent malicious or malformed data from reaching smart contracts.
Key Points Intro
Oracle firewalls guard smart contracts by enforcing data validity and format checks.
Key Points
Schema validation: Ensures payload matches expected format.
Range checks: Verifies data falls within acceptable bounds.
Authentication: Confirms signature and node identity.
Rate limiting: Blocks excessive or spam submissions.
Example
Technical Deep Dive
Firewall contract wraps `submit()` calls with `require(answer >= min && answer = max)`. It also checks `verifyAttestation()` and tracks per-node submission counters.
Security Warning
Overstrict filters can block legitimate updates; ensure thresholds accommodate volatility.
Caveat
Firewall logic itself must be audited to avoid accidental data blockage.
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