Oracle Security (Global)
High-quality technical overview of Oracle Security in the context of blockchain security.
Functions: 1. Protocol translation. 2. Data filtering. 3. NAT/PAT. 4. Border security. Types: Network Gateway, Cloud Storage Gateway, IoT Gateway, [API Gateway](/fr/terms/api-gateway).
graph LR
Center["Oracle Security (Global)"]:::main
Rel_oracle["oracle"]:::related -.-> Center
click Rel_oracle "/terms/oracle"
Rel_oracle_attacks["oracle-attacks"]:::related -.-> Center
click Rel_oracle_attacks "/terms/oracle-attacks"
Rel_oracle_network["oracle-network"]:::related -.-> Center
click Rel_oracle_network "/terms/oracle-network"
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🧒 Explique-moi comme si j'avais 5 ans
Imagine your school has a giant wall around it with only one door. All the students inside the school can talk to each other easily. But if a student wants to send a letter to their parents at home, the letter has to go through that one specific door. The person standing at that door who checks the letters and sends them out is the [gateway](/fr/terms/gateway).
🤓 Expert Deep Dive
Technically, a gateway operates at 'Layer 4' (Transport) and above in the OSI model, though 'Residential Gateways' often perform Layer 3 routing as well. Its primary job is 'Protocol Conversion'. For example, an IoT gateway might take data from low-power Bluetooth sensors and convert it into standard TCP/IP packets for the cloud. In enterprise environments, 'API Gateways' act as a single entry point for microservices, handling authentication, rate limiting, and request routing. A 'Default Gateway' is the IP address a computer sends traffic to when it doesn't have a specific route for a destination—essentially saying, 'I don't know where this goes, so I'll give it to the gateway to figure out'.