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Chapter 27 Access Control
ES-2048 User’s Guide
233
27.4 SSH Overview
Unlike Telnet or FTP, which transmit data in clear text, SSH (Secure Shell) is a secure
communication protocol that combines authentication and data encryption to provide secure
encrypted communication between two hosts over an unsecured network.
Figure 132
SSH Communication Example
27.5 How SSH works
The following table summarizes how a secure connection is established between two remote
hosts.
Figure 133
How SSH Works
1
Host Identification
The SSH client sends a connection request to the SSH server. The server identifies itself
with a host key. The client encrypts a randomly generated session key with the host key
and server key and sends the result back to the server.
The client automatically saves any new server public keys. In subsequent connections,
the server public key is checked against the saved version on the client computer.
Содержание ES-2048
Страница 2: ...ES 2048 User s Guide 2...
Страница 7: ...Safety Warnings ES 2048 User s Guide 7 This product is recyclable Dispose of it properly...
Страница 8: ...Safety Warnings ES 2048 User s Guide 8...
Страница 20: ...Table of Contents ES 2048 User s Guide 20...
Страница 28: ...List of Tables ES 2048 User s Guide 28...
Страница 30: ...30...
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Страница 40: ...Chapter 2 Hardware Installation and Connection ES 2048 User s Guide 40...
Страница 46: ...Chapter 3 Hardware Overview ES 2048 User s Guide 46...
Страница 56: ...Chapter 4 The Web Configurator ES 2048 User s Guide 56...
Страница 66: ...Chapter 6 System Status and Port Statistics ES 2048 User s Guide 66...
Страница 78: ...Chapter 7 Basic Setting ES 2048 User s Guide 78...
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Страница 95: ...Chapter 8 VLAN ES 2048 User s Guide 95 Figure 41 Port Based VLAN Setup Port Isolation...
Страница 128: ...Chapter 15 Link Aggregation ES 2048 User s Guide 128...
Страница 138: ...Chapter 17 Port Security ES 2048 User s Guide 138...
Страница 155: ...Chapter 19 Multicast ES 2048 User s Guide 155 Figure 80 MVR Group Configuration Example...
Страница 156: ...Chapter 19 Multicast ES 2048 User s Guide 156...
Страница 170: ...Chapter 20 Authentication Accounting ES 2048 User s Guide 170...
Страница 195: ...195 PART IV IP Application Static Route 197 Differentiated Services 201 DHCP 209...
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Страница 200: ...Chapter 23 Static Route ES 2048 User s Guide 200...
Страница 208: ...Chapter 24 Differentiated Services ES 2048 User s Guide 208...
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Страница 240: ...Chapter 27 Access Control ES 2048 User s Guide 240...
Страница 242: ...Chapter 28 Diagnostic ES 2048 User s Guide 242...
Страница 246: ...Chapter 29 Syslog ES 2048 User s Guide 246...
Страница 259: ...259 PART VI Troubleshooting Product Specifications Troubleshooting 261 Product Specifications 265...
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Страница 264: ...Chapter 34 Troubleshooting ES 2048 User s Guide 264...
Страница 272: ...Chapter 35 Product Specifications ES 2048 User s Guide 272...
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Страница 288: ...Appendix B Common Services ES 2048 User s Guide 288...
Страница 292: ...Appendix C Legal Information ES 2048 User s Guide 292...
Страница 298: ...Appendix D Customer Support ES 2048 User s Guide 298...
Страница 306: ...Index ES 2048 User s Guide 306...