1-17
telnet
: Supports Telnet protocol.
Description
Use the
protocol inbound
command to specify the protocols supported by the user interface.
Both Telnet protocol and SSH protocol are supported by default.
Related commands:
user-interface vty
.
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.
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.
To configure a user interface to support SSH, you need to set the authentication mode to
scheme
for
users to log in successfully. If the authentication mode is set to
password
or
none
for login users, the
protocol inbound ssh
command will fail. Refer to the
authentication-mode
command for the related
configuration.
Examples
# Configure that only SSH protocol is supported in VTY 0.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] user-interface vty 0
[Sysname-ui-vty0] protocol inbound ssh
Summary of Contents for 5500-EI PWR
Page 43: ...2 6...
Page 76: ...1 17...
Page 228: ...ii stp transmit limit 1 44 vlan mapping modulo 1 45 vlan vpn tunnel 1 46...
Page 477: ...5 24 Sysname vlan 2 Sysname vlan2 service type multicast...
Page 503: ...2 3 System View return to User View with Ctrl Z Sysname dot1x url http 192 168 19 23...
Page 519: ...iii...
Page 597: ...2 2 security policy server 192 168 0 1 user name format without domain...
Page 648: ...1 9 Examples Clear static ARP entries Sysname reset arp static...
Page 663: ...4 3 Sysname resilient arp interface vlan interface 2...
Page 767: ...1 28 From 12 00 Jan 1 2008 to 12 00 Jun 1 2008...
Page 1111: ...ii xmodem get 3 18...
Page 1314: ...A 44 Z...