2. Architecture and basic operation
2.1 SSH subprotocols
SSH uses a client-server architecture to ensure authentication of communicating entities, and encryption and integrity of their data transmitted over a network. As already mentioned, version 2 of this protocol specifies an architecture separated into three sub-protocols (or layers) working together, as shown in figure 1 :
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SSH transport layer (SSH-TRANS)
The other two SSH layers are based on this layer. SSH-TRANS provides server authentication, confidentiality and data integrity using symmetrical encryption (see...
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Architecture and basic operation
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