Physics isolation
Physical isolation products are used to solve network security problems. Especially in those confidential networks, private networks and special networks that need to be absolutely guaranteed to be connected to the Internet, in order to prevent attacks from the Internet and ensure confidentiality, security, integrity, defense reputation and high security networks. Availability, almost all requires physical isolation technology.
Now the technology, not only four:
Static packet filter (Static Packet Filter)
2. Dynamic or Stateful Packet Filter
3. Circuit Level Gateway
4. Application Level Gateway
5. Status Detection Pack Filter (STATEFUL INSPECTION PACKET FILTER)
6. Switching agent (CUTOFF Proxy)
7. Physical isolation (Air GAP)
The understanding of physics isolation is the following aspects:
1. Blocking the direct connection of the network, that is, there is no two networks simultaneously on the isolation device;
2. Blocking the Internet logical connection, that is, the protocol of TCP / IP must be stripped, transmitting the original data through the P2P non-TCP / IP connection protocol through the isolation device;
3. The transmission mechanism of the isolation device has incapable of programmable characteristics, so there is no infection;
4. Any data is completed by two-stage mobile agents, and between the two-stage mobile agents is physically isolated;
5. Isolation equipment has the function of review;
6. The original data transmitted by the isolation device does not have an attack or harmful to network security. Just like TXT text, there is no virus, or you will not execute the command.
7. Powerful management and control functions.
