SSH over TELNET to protect your crypto assets!

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@lightreflections
1/28/2018

There are a number of excellent terminal emulation programs available for connecting to a networking device either by a serial connection over a console port or by a SSH/Telnet connection. Some of these include:

PuTTY

Tera Term

SecureCRT

OS X Terminal

As a security feature, the IOS software separates management access into the following two command modes:

User EXEC Mode - This mode has limited capabilities but is useful for basic operations. It allows only a limited number of basic monitoring commands but does not allow the execution of any commands that might change the configuration of the device. The user EXEC mode is identified by the CLI prompt that ends with the > symbol.

Privileged EXEC Mode - To execute configuration commands, a network administrator must access privileged EXEC mode. Higher configuration modes, like global configuration mode, can only be reached from privileged EXEC mode. The privileged EXEC mode can be identified by the prompt ending with the # symbol.

Line Configuration Mode - Used to configure console, SSH, Telnet, or AUX access.

Interface Configuration Mode - Used to configure a switch port or router network interface.

To move in and out of global configuration mode, use the configure terminal privileged EXEC mode command. To return to the privileged EXEC mode, enter the exit global config mode command.

There are many different sub-configuration modes. For example, to enter line sub-configuration mode, you use the line command followed by the management line type and number you wish to access. To exit a sub-configuration mode and return to global configuration mode, use the exit command. Notice the changes in the command prompt.

Switch(config)# line console 0
Switch(config-line)# exit
Switch(config)#

To move from any sub-configuration mode of the global configuration mode to the mode one step above it in the hierarchy of modes, enter the exit command.

To move from any sub-configuration mode to the privileged EXEC mode, enter the end command or enter the key combination Ctrl+Z.

Switch(config-line)# end
Switch#

You can also move directly from one sub-configuration mode to another. Notice how after the network device name, the command prompt changes from (config-line)# to (config-if)#.

Switch(config-line)# interface FastEthernet 0/1
Switch(config-if)#

To configure SSH or secure shell network simply type in the command :
In global configuration mode : transport input SSH

This step should drastically improve you mining rigs security.

How to DeBug?
Issue the command to allow log messages to be sent to your remote session.
R1# terminal monitor
R1#
Issue the following troubleshooting commands:
Issue the debug command that will monitor the status of ICMP messages on R1.
Ping a device with an IP address of 10.0.0.10.
Turn off all debugging.
R1# debug ip icmp

R1# ping 10.0.0.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.0.10, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
*Nov 13 12:56:08.147: ICMP: echo reply rcvd, src 10.0.0.10, dst 10.0.0.1,
topology BASE, dscp 0 topoid 0
*Nov 13 12:56:08.151: ICMP: echo reply rcvd, src 10.0.0.10, dst 10.0.0.1,
topology BASE, dscp 0 topoid 0
*Nov 13 12:56:08.151: ICMP: echo reply rcvd, src 10.0.0.10, dst 10.0.0.1,
topology BASE, dscp 0 topoid 0
*Nov 13 12:56:08.151: ICMP: echo reply rcvd, src 10.0.0.10, dst 10.0.0.1,
topology BASE, dscp 0 topoid 0
*Nov 13 12:56:08.151: ICMP: echo reply rcvd, src 10.0.0.10, dst 10.0.0.1,
topology BASE, dscp 0 topoid 0
R1# undebug all
All possible debugging has been turned off
R1#
You have successfully used the Terminal Monitor and Debug commands to troubleshoot.

To download latest Linux, putty and terra term click in the description down below:

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Terra Term:
https://tera-term.en.softonic.com/?ex=DSK-347.0

LINUX :
https://www.ubuntu.com/download/desktop

Putty:
https://www.putty.org/

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Good Karma codes down below : Have a blessed day steemians!

Bitcoin
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Ethereum
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Ethereum Classic
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Litecoin
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Dash
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Zcash
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Doge
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Bitcoin Cash
1KDR25obqkqjMnfUfVggUVaHnhcaBjfd9R