
C
HAPTER
24
| Authentication Commands
Secure Shell
– 855 –
entered into the known host file. However, you do not need to configure
the client's keys.
Public Key Authentication
– When an SSH client attempts to contact the
switch, the SSH server uses the host key pair to negotiate a session
key and encryption method. Only clients that have a private key
corresponding to the public keys stored on the switch can access it. The
following exchanges take place during this process:
Authenticating SSH v1.5 Clients
a.
The client sends its RSA public key to the switch.
b.
The switch compares the client's public key to those stored in
memory.
c.
If a match is found, the switch uses its secret key to generate
a random 256-bit string as a challenge, encrypts this string
with the user’s public key, and sends it to the client.
d.
The client uses its private key to decrypt the challenge string,
computes the MD5 checksum, and sends the checksum back
to the switch.
e.
The switch compares the checksum sent from the client
against that computed for the original string it sent. If the two
check sums match, this means that the client's private key
corresponds to an authorized public key, and the client is
authenticated.
Authenticating SSH v2 Clients
a.
The client first queries the switch to determine if DSA public
key authentication using a preferred algorithm is acceptable.
b.
If the specified algorithm is supported by the switch, it notifies
the client to proceed with the authentication process.
Otherwise, it rejects the request.
c.
The client sends a signature generated using the private key
to the switch.
d.
When the server receives this message, it checks whether the
supplied key is acceptable for authentication, and if so, it then
checks whether the signature is correct. If both checks
succeed, the client is authenticated.
N
OTE
:
The SSH server supports up to eight client sessions. The maximum
number of client sessions includes both current Telnet sessions and SSH
sessions.
N
OTE
:
The SSH server can be accessed using any configured IPv4 or IPv6
interface address on the switch.
Содержание ECS4110-28T
Страница 1: ...Management Guide www edge core com ECS4110 28T 28P 52T 52P 28 52 Port Gigabit Ethernet Layer 2 Switch...
Страница 2: ......
Страница 4: ......
Страница 63: ...FIGURES 63 Figure 428 Configuring VLAN Translation 1177...
Страница 64: ...FIGURES 64...
Страница 72: ...TABLES 72...
Страница 74: ...SECTION I Getting Started 74...
Страница 102: ...SECTION II Web Configuration 102 General IP Routing on page 679...
Страница 154: ...CHAPTER 4 Basic Management Tasks Resetting the System 154...
Страница 198: ...CHAPTER 5 Interface Configuration VLAN Trunking 198 Figure 65 Configuring VLAN Trunking...
Страница 272: ...CHAPTER 9 Congestion Control Automatic Traffic Control 272...
Страница 286: ...CHAPTER 10 Class of Service Layer 3 4 Priority Settings 286...
Страница 420: ...CHAPTER 13 Security Measures DHCP Snooping 420...
Страница 566: ...CHAPTER 14 Basic Administration Protocols OAM Configuration 566...
Страница 638: ...CHAPTER 15 Multicast Filtering Multicast VLAN Registration for IPv6 638...
Страница 662: ...CHAPTER 16 IP Configuration Setting the Switch s IP Address IP Version 6 662...
Страница 678: ...CHAPTER 17 IP Services Configuring the PPPoE Intermediate Agent 678...
Страница 792: ...CHAPTER 21 System Management Commands Switch Clustering 792...
Страница 822: ...CHAPTER 23 Remote Monitoring Commands 822...
Страница 888: ...CHAPTER 24 Authentication Commands PPPoE Intermediate Agent 888...
Страница 968: ...CHAPTER 25 General Security Measures Port based Traffic Segmentation 968...
Страница 994: ...CHAPTER 26 Access Control Lists ACL Information 994...
Страница 1034: ...CHAPTER 28 Link Aggregation Commands Trunk Status Display Commands 1034...
Страница 1044: ...CHAPTER 29 Power over Ethernet Commands 1044...
Страница 1084: ...CHAPTER 33 UniDirectional Link Detection Commands 1084...
Страница 1090: ...CHAPTER 34 Address Table Commands 1090...
Страница 1194: ...CHAPTER 37 VLAN Commands Configuring Voice VLANs 1194...
Страница 1388: ...CHAPTER 42 CFM Commands Delay Measure Operations 1388...
Страница 1410: ...CHAPTER 44 Domain Name Service Commands 1410...
Страница 1420: ...CHAPTER 45 DHCP Commands DHCP Relay 1420...
Страница 1472: ...CHAPTER 46 IP Routing Commands IPv4 Commands 1472...
Страница 1474: ...SECTION IV Appendices 1474...
Страница 1502: ...COMMAND LIST 1502...
Страница 1513: ......
Страница 1514: ...ECS4110 28T ECS4110 28P ECS4110 52T ECS4110 52P E072014 ST R02 150200000929A...