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Operation Manual – Login
Quidway S5600 Series Ethernet Switches-Release 1510
Chapter 3 Logging in through Telnet
Huawei Technologies Proprietary
3-3
Authentication
mode
Telnet configuration
Description
Manage VTY
users
Set service
type for VTY
users
Required
Perform
common
configuration
Perform
common
Telnet
configuration
Optional
Refer to Table 3-2.
Note:
To improve security and avoid malicious attack to the unused SOCKETs, TCP 23 and
TCP 22 ports for Telnet and SSH services respectively will be enabled or disabled after
corresponding configurations.
z
If the authentication mode is
none
, TCP 23 will be enabled, and TCP 22 will be
disabled.
z
If the authentication mode is
password
, and the corresponding password has been
set, TCP 23 will be enabled, and TCP 22 will be disabled.
z
If the authentication mode is
scheme
, there are three scenarios: when the
supported protocol is specified as
telnet
, TCP 23 will be enabled; when the
supported protocol is specified as
ssh
, TCP 22 will be enabled; when the supported
protocol is specified as
all
, both the TCP 23 and TCP 22 port will be enabled.
3.2 Telnet Configuration with Authentication Mode Being
None
3.2.1 Configuration Procedure
Table 3-4
Telnet configuration with the authentication mode being none
Operation
Command
Description
Enter system view
system-view
—
Enter one or more
VTY user interface
views
user-interface vty
first
-
number
[
last-number
]
—
Configure not to
authenticate users
logging into VTY
user interfaces
authentication-mode none
Required
By default, VTY users are
authenticated after logging in.