Which command is necessary to permit SSH or Telnet access to a Cisco switch that is otherwise configured for these vty line protocols?

The correct answer is D. transport input all. 'transport input all' (or 'transport input ssh telnet') is configured under the VTY line configuration and specifies which protocols are allowed to initiate incoming connections to those lines. Without this command, the default may restrict or block connections. 'transport output

Network Device Management

Question

Which command is necessary to permit SSH or Telnet access to a Cisco switch that is otherwise configured for these vty line protocols?

Options

Atransport output all
Btransport preferred all
Ctransport type all
Dtransport input all

How the community answered

(19 responses)

A
5% (1)
C
11% (2)
D
84% (16)

Explanation

'transport input all' (or 'transport input ssh telnet') is configured under the VTY line configuration and specifies which protocols are allowed to initiate incoming connections to those lines. Without this command, the default may restrict or block connections. 'transport output all' (A) controls which protocols the device itself can use for outgoing connections - it does not affect incoming access. 'transport preferred all' (B) sets the default protocol used when making outbound connections but doesn't control inbound access. 'transport type all' (C) is not a valid Cisco IOS command.

Topics

#vty lines#SSH#Telnet#transport input

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