To configure a console user-mode password, use the Line command from global configuration mode. The number after it is the session number. The first time that you log in to your switch through the console, you have to use the default username and password, which is cisco. In this example, the SG350X switch is used. By default, the Cisco IOS XE software operates in two modes (privilege levels) of password security: user EXEC (Level 1) and privileged EXEC (Level 15). There is no prohibition against configuring different lines with different types of password protection. If you have configured a new username or password, enter those credentials instead. You can enter privileged mode by first entering user mode and then typing the command enable. Luckily I know the password. Esc+F key combination on CISCO Router/Switch, IP Classless Command on CISCO Router/Switch, Passive-Interface Default Command on CISCO Router/Switch, Show Vlan Brief Command on CISCO Router/Switch, Show Debug Command on CISCO Router/Switch, show protocols Command on CISCO Router/Switch, Debug IP RIP Command on CISCO Router/Switch, Copy tftp run Command on CISCO Router/Switch. The default value is 3. not-current Specifies that the new password cannot be the same as the current password. AAA, is stands for Authentication, Authorization, and Accounting. I've compared line by line on switches that don't need the extra password with switches that do and can't find any additional commands that would add the generic password. Note: In this example, the password complexity is set to at least 9 characters, cannot repeat or reverse the user name, and cannot be the same as the current password. You set the Enable password from global configuration EXEC mode and use the commandenable password password. To configure your router to accept SSH access, do the following. To initially set up a router, you need to connect to the console port and at a minimum enable one interface and set the VTY password. R1. It is recommended that you include no ip domain-lookup during the configuration process. Router(config-line)#login Here is an example of an administrators attempt to Telnet to a router that does not have the VTY lines configured:Password not set, connection refused. The documentation set for this product strives to use bias-free language. This command Telnet to a specified IP address or host name. Your email address will not be published. The information in this document is based on these software and hardware versions: The information in this document was created from the devices in a specific lab environment. Users should make sure that passwords are strong. Step 6. Outbound connections from lines vty 0 4 are restricted generally by access-class 2, so when jane logs in to R1 vty 0 4 she will be able to connect out to only 4.4.4.4. It's not a password tied to a user, it's a password to get into the Enable mode. Router>enable From here, you can enable or disable the interface, add IP and IPX addresses, and more. Router(config)#line console 0 Both of these modes are called EXEC mode, and a prompt is used to tell you which mode you are in. When resuming, the resume command itself can be skipped. The same password can be set for all the telnet sessions. The use of password protection to control or restrict access to the command line interface (CLI) of your router is one of the fundamental elements of an overall security plan. Most routers. h. Configure and activate the G0/0/1 interface on the router using the information contained in the Addressing Table. You can use them to connect to the router to make configuration changes or check the status. For adding extra security to a router you should also read How Set Line Console password,How to set auxiliary line password and how to set enable secret password on cisco router. Step 2. In addition to receiving Telnet access, Cisco routers and Catalyst switches can also telnet themselves to log in to other devices. For information on using the command line and for understanding command modes, see Using the Cisco IOS Command-Line Interface. If you want to force a telnet disconnect for yourself, use the clear line command. You should now have configured the basic password settings on your switch through the CLI. The default username and password is cisco. To specify the password aging setting on the switch, enter the following: Note: In this example, the password aging is set to 60 days. This prompt tells you that you are in global configuration mode. In order to perform the tasks described in this document, you must have privileged EXEC access to the router's command line interface (CLI). Cisco hardware supports a maximum of 16 line virtual interfaces, i.e. All trademarks are the property of their respective owners. Step 7. Network technologies with a focus on Cisco. It is crucial to set a console port password as it defends against someone from connecting, physically moving up to the router, or gaining access to user mode, and much more. Global configuration modeOnce you are in privileged mode, you enter global configuration mode to change the configuration. The running config is shown for vty 0 4, with no login. Vty password : Vty is used for Telnet or SSH session in a router. Here is an. In order to prevent and protect the network from unwanted threats and unauthorized access, the router must be password protected. Cisco devices use privilege levels to provide password security for different levels of switch operation. use the following commands in user EXEC or privileged EXEC mode to remotely log in to other devices as an SSH client. The current IOS can be further extended to handle more VTY lines; a single device can accept multiple VTY accesses, and the assignment of a VTY line number uses the VTY line number available at the time the VTY access is received. Changing configuration back to no aaa new-model is not supported. VTY (Telnet)The Virtual Teletype (VTY) lines are used to configure Telnet access to a Cisco router. Managing Cisco Catalyst Switches :What it means to set an IP address on a switch. Router(config-line)#line aux 0 How to Configure DHCP Server on a Cisco Router? To enable password checking at login, use the login command in line configuration mode. To configure a password on a line such as console, Telnet, Secure Shell (SSH), and so on, enter the password Line Configuration mode by entering the following: Note: In this example, the line used is Telnet. Of course, the log is also displayed except when exiting the global configuration mode. vty stands for Virtual Teletype and is used to configure a virtual port to get the telnet or ssh access of Cisco Router/Switch. You will be asked to confirm the password. Note: You have the option to configure the password strength and complexity settings through the web-based utility of the switch as well. Also, you cannot enter privileged mode (which is the IOS EXEC mode that allows you to view or change the configuration on a router) from Telnet unless an Enable password is set. It defines how many VTY's that are active on the device and essentially how many simultaneous remote connections you want to allow/support. This action will cause the configuration process to be interrupted. The VTY lines are the Virtual Terminal lines of the router, used solely to control inbound Telnet connections. CCNA Certification Community Like Answer Share 7 answers 9.38K views Top Rated Answers All Answers If you have enabled password authentication on the VTY line with the login command, but have not set a password on the VTY line, you will not be able to authenticate and VTY access will be denied as follows. The router should always be accessed from a secure system. Enable password is set on the router in order to go from user exec mode to the privileged exec mode. That means, 5 different administrators/connections can access the Cisco Router/Switch simultaneously using Telnet or SSH. To get into user mode, you can connect in one of three ways: The most important thing to understand about the three connection modes is that they get you into user mode only. AAA1AAA2CiscoSecureACSAAAAAA1R1AAAconsoleVTY (0,1,2,3,,15). In order to specify a password on the AUX line, issue the password command in line configuration mode. (Optional) To enable the password recovery setting on the switch, enter the following: Step 4. Therefore, there is a risk that if the communication is eavesdropped, the user ID/password account information can be compromised to allow a malicious user to login. Console secret password enable secret <string> enable password <string> Virtual Terminor password Line vty <number> Password <string> Host name Hostname <string> ip routing! Line Console, Line Aux, and VTY passwords are set to gain access to the router. While transport preferred none provides the same output, it also disables auto Telnet for the defined host that are configured with the ip host command. This can be done by connecting from a different host on the network, but you can also test from the router itself by telnetting to the IP address of any interface on the router that is in an up/up state as seen in the output of the show interfaces command. The following checklist will help ensure that all the appropriate steps are taken for equipment reassignment. In this article, we discuss the command live vty and related configuration. There are two ways to configure a vty password: You can enter the password during the initial configuration dialog, or you can use the password command in line vty configuration mode. Contain no character that is repeated more than three times consecutively. See Password Recovery Procedures to find instructions for your particular platform. If you want more, you can do it by adding additional VTY's: "line vty 0 15", which will give you 16 in total. After one interface is enabled and the VTY lines are configured, an administrator can then Telnet into the router and do the final configurations from that connection. Step 4. Note:Configuring the router to use other types of AAA servers (RADIUS, for example) is similar. You can set each line individually, but because you cannot choose the line you enter the router with when you Telnet, this can cause problems. These passwords can be changed at any time by the user. Tags: CCNA labsccna tutorialsCiscocisco labsnetworkingpacket tracerrouter configurationtelnet passwordvty line password. To prevent this, enter the following command in global configuration mode. If you want to switch back to the line vty configuration, you must remove the aaa configuration first. The console, aux, and VTY ports are used to get into user mode only and have nothing to do with how the router is configured. However, it is encrypted by default and supercedes Enable if it is set. Choosing a vendor to provide cloud-based data warehouse services requires a certain level of due diligence on the part of the purchaser. To provide the best experiences, we use technologies like cookies to store and/or access device information. Therefore, password complexity requirements are enforced by default and may be configured as necessary. Configure the password, and enable password checking at login. These two passwords are set to go from User Exec Mode to the Privileged Exec Mode. Here are the five passwords you can set on a Cisco router: We will discuss each of these passwords and how to configure them in the following sections. Telnet is a simple protocol and does not encrypt communications. (0,1,2,3,4) for remote access. Aging is relevant only to users of the local database with privilege level 15 and to configured enable passwords of privilege level 15. This policy provides guidelines for reclaiming and reusing equipment from current or former employees. The range is from 0 to 64 characters. You will be prompted to configure new password for better protection of your network. Notice the prompt changed to Router(config-line)#. If this feature is enabled, new passwords must conform to the following default settings: You can control the above attributes of password complexity with specific commands. All Rights Reserved. For setting a password for VTY lines you should be at the global configuration mode. The lock command is used to lock the current session. Once the user unlocks the session by hitting enter, they have to use the password that was set previously to unlock. GNS3Network.com is not associated with any profit or non profit organization. ConclusionIt is extremely important to set your passwords on every Cisco router your company has. The only difference is that there are 5 VTY virtual ports, which are named 0, 1, 2, 3, and 4. 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