3Com 4500 PWR 26-Port Configuration Manual page 67

Telnet Configurations for Different Authentication Modes
Table 2-7 Telnet configurations for different authentication modes
Authentication
mode
None
Password
Scheme
To improve security and prevent attacks to the unused Sockets, TCP 23 and TCP 22, ports for Telnet
and SSH services respectively, will be enabled or disabled after corresponding configurations.
If the authentication mode is none, TCP 23 will be enabled, and TCP 22 will be disabled.
If the authentication mode is password, and the corresponding password has been set, TCP 23
will be enabled, and TCP 22 will be disabled.
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.
Telnet configuration
Perform common Perform common
configuration Telnet configuration
Configure the
Configure the
password for local
password
authentication
Perform common Perform common
configuration Telnet configuration
Specify to AAA configuration
perform local specifies whether to
authentication or perform local
remote RADIUS authentication or
authentication RADIUS authentication
Configure user Configure user names
name and and passwords for
password local/RADIUS users
Manage VTY Set service type for
users VTY users
Perform common Perform common
configuration Telnet configuration
2-17
Description
Optional
Refer to Table 2-6.
Required
Optional
Refer to Table 2-6.
Optional
Local authentication is
performed by default.
Refer to the AAA part for
more.
Required
The user name and
password of a local user are
configured on the switch.
The user name and
password of a remote user
are configured on the
RADIUS server. Refer to
user manual of RADIUS
server for more.
Required
Optional
Refer to Table 2-6.