3Com 5500-EI PWR, Справочное руководство

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After the configuration, the subsequent authentications are implemented automatically without
asking you to enter the password.
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Password-publickey authentication takes the advantages of both the password authentication and
publickey authentication. An SSH user must pass both types of authentication before logging in.
The combination of password and publickey authentications eliminates the vulnerability of the SSH
server caused by the clients. You can use password-publickey authentication together with AAA for
authentication and authorization of users.
You need to specify the authentication mode for an SSH user. Otherwise, the user will not be able to log
in to the SSH server.
Related commands: display ssh user-information .
Examples
# Specify the publickey authentication for SSH users.
<Sysname>system-view
System View: return to User View with Ctrl+Z.
[Sysname]ssh user kk authentication-type publickey
# Display the SSH user information.
[Sysname] display ssh user-information kk
Username Authentication-type User-public-key-name Service-type
kk publickey null stelnet
ssh user service-type
Syntax
ssh user username service-type { stelnet | sftp | all }
undo ssh user username service-type
View
System view
Parameters
username : SSH user name, a string of 1 to 184 characters. It cannot contain any of these characters:
slash (/), backslash (\), colon (:), asterisk (*), question mark (?), less than sign (<), greater than sign (>),
and the vertical bar sign (|). In addition, the @ sign can appear up to once, the username part (that is,
the string before the @ sign) cannot be more than 55 characters, and the domain name part cannot be
more than 128 characters.
stelnet : Specifies the service type of secure Telnet..
sftp : Specifies the service type as secure FTP..
all : Specifies both secure Telnet and secure FTP.