Security configuration guide for the ess3300 switches cisco. How to configure ssh secure shell in cisco router or switch for secure remote access. One thing you will have to decide early on is how you are going to authorize your users. Apr, 2020 consolidated platform configuration guide, cisco ios release 15. The secure shell ssh integrated client feature is an application that runs over the ssh protocol to provide device authentication and encryption. Mar 30, 2020 short and complete guide to configure ssh on cisco router and switch for secure remote connection. Via scp over ssh the secure copy scp over ssh method is chosen to download or back up configuration file via secure shell ssh.
Red font color or gray highlights indicate text that appears in the answer copy only. The switch is shipped with the cmp network interface set to a default configuration. Today well take a deeper look at how you can enable and configure your cisco router to use ssh and why we should always use ssh where possible as opposed to using telnet. Implement ssh version 2 when possible because it uses a more enhanced security encryption algorithm. Tftp is mainly used to boot up computers in lan, and is also suitable to download files.
For the configuration of ssh on cisco switch you need the following line vty configurations, and input transport is required to set to ssh. To be able to ssh into any cisco device first we need to create at least one user account on the device. This packet tracer activity shows how to configure ssh. Vlan 2 i will plug my router there for the internet access vlan10 is for my server and pc in my office vlan 40. You can configure telnet on all cisco switches and routers with the following step by step guides. Ssh is a protocol that provides a secure, remote connection to a device. How to configure ssh version 2 on cisco router ip with ease. From the switch, if you do sh ip ssh, it will confirm that the ssh is enabled on this cisco device. After you enable ssh, the switch can authenticate itself to ssh clients. Download or back up configuration files on an sx300 or. In order to enable and configure a cisco router switch for ssh server, you can configure ssh parameters. The telnet is an old and nonsecure application protocol for remote control services.
The ssh protocol secure shell is a method for secure remote login from one device to other. This is the same with secure copy protocol scp, which relies on ssh for its secure transport. By default, when you configure a cisco device, you have to use the console cable. Configuring ssh on cisco routers and switches ciobys. Short and complete guide to configure ssh on cisco router and switch for secure remote connection. How to configure port security in cisco switch how to configure nat cisco ccna basic. Even then, ssh should be configured in case the access server fails. Before enabling scp, you must correctly configure ssh, authentication, and authorization on the. Now here we are explaining the steps to ssh to cisco switch using python script and to configure ip on vlan interface. First step in configuring ssh to securely access the cli interface of a cisco router or switch remotely is to create a local user database for user authentication.
How to upgrade ios on a cisco 3560 switch using a tar file. The secure shell protocol ssh server feature enables a ssh client to make a secure, encrypted connection to a cisco nexus device. Cisco switch configuration using web console dummies. The easiest way to find out if your ios images supports ssh is to run the show version command in user exec mode and look at the image name. By default, when you configure a cisco device, you have to use the console cable and connect directly to the system to access it. Ssh provides more security for remote connections than telnet does by providing strong encryption when a device is authenticated. Ssh or secure shell encrypts the data that is sent from the terminal application to the device. Jun 28, 2007 secure shell ssh is a protocol which provides a secure remote access connection to network devices.
The gui tool, web console is provided to assist you in configuring your cisco switches. We had explained the ways to take a telnet session to the switches in our previous posts. If your cisco switch is running an older version of cisco ios image, then it is extremely recommended that you upgrade to latest cisco ios. Configure secure shell ssh server authentication settings. May 09, 2015 this article is going to shows the ccna students to configure and enable telnet and ssh on cisco router and switches. I have a cisco switch in my network, which i can access by hooking up a console cable directly to the device. Making if far more safer when it is compared to telnet which sends the data in plain text. Telnet is an insecure protocol for remote server configuration. Consolidated platform configuration guide, cisco ios release. How to configure ssh on cisco routers and switches by remy pereira on 03rd february 2015 once you complete initial setup and configuration of your cisco switch or router using a console, you may want to manage the device remotely. Configure secure shell ssh user authentication settings. Configuring secure shell on routers and switches running cisco ios. Configuring ssh and telnet cisco nexus 5000 series. Consolidated platform configuration guide, cisco ios release 15.
Enable ssh on the switch and anticipate ssh client contact behavior. Ssh provides a secure channel over an unsecured network in a clientserver architecture, connecting an ssh client application with an ssh server. Public key private key anyone or any device that has the public key is able to encrypt data that can only be decrypted by the private key. The ssh client enables a cisco nexus 5000 series switch to make a secure, encrypted connection to another cisco nexus 5000 series switch or to any other device running an ssh server. How to configure cisco switches a step by step guide. Basic cisco switch configuration example in 10 steps. I was asked today to download backup config of a cisco 2950 switch. May 19, 2016 configuring ssh 3560 cisco switch and creating local username to connect remotely in a secure environment in 5 minutes.
To add support for ssh to a cisco router or switch, the device needs. If you do not configure ssh parameters, the default. The ssh client feature is an application running over the ssh protocol to provide device authentication and encryption. Secure shell ssh is a protocol which provides a secure remote access connection to network devices. Hi i bought an sg30010 switch and started configuration.
One such weakness is telnet to which ssh is the alternative. Configure ssh server authentication settings on a switch. To add support for ssh to a cisco router or switch, the device needs some added information then just passwords. The ssh server in the cisco nexus device switch interoperates with publicly and commercially available ssh clients. Ssh replaced telnet and ssh is much more secure than telnet. Pki public key authentication is an authentication method that uses a key pair for authentication instead of a password. For ssh to work, the switch needs an rsa publicprivate key pair. Each of the 3 parts will have a few substeps as well. There are four steps required to enable ssh support on a cisco ios router. For instructions on how to configure ssh authentication settings on your switch through the cli, click here. The former is outdated and bugged, the latter just spams exceptions. Learn the basic steps in configuring and testing ssh on a cisco ios router.
The ssh client enables a cisco device to make a secure, encrypted connection to another cisco device or to any other device running the ssh server. How to enable ssh on cisco switch, router and asa the geek stuff. Tutorial configuring cisco telnet remote access 2018. I am having an issue configuring ssh on a catalyst 9300 switch. Configuring ssh access when it comes to device management you want to ensure that the traffic is secure and encrypted. This connection provides an outbound connection that is encrypted. Hi, i was asked today to downloadbackup config of a cisco 2950 switch. The ip ssh command enables or disables ssh on the switch, and modifies parameters the switch uses for transactions with clients. Ensure that you are logged in to the cmp before configuring the default gateway and ip address. Can someone please tell the commands to setup ssh to a catalyst 3560 switch. Configure a cisco switch for ssh access part 2 configure.
You can configure telnet on all cisco switches and. The following are the prerequisites for configuring the switch for secure shell ssh. We all know that when it comes to security within the networking universe, cisco is one of the biggest players. The following are restrictions for configuring the switch for secure shell. Catalyst 2960x switch security configuration guide, cisco ios release 15. Proper passwords protect the router from unauthorized access. After finishing the download, run the software and wait for the following screen. Part 1 configuring cisco routers with simple commands. Before performing this test, ensure that you have an alternate connection into the router, such as telnet or dialin, in case there is a. The ssh client enables a switch to make a secure, encrypted connection to another cisco nexus device or to any other device running an ssh server.
After generating the rsa, ssh gets enabled but i see %ssh. How to configure ssh secure shell in cisco router or switch. Need help configuring sg30010 switch cisco community. The most important cli commands are included that will be helpful for most configurations. We need configure ssh on a cisco router or switch in order to access it remotely, unless were using an access server. Jun 11, 2017 this packet tracer activity shows how to configure ssh. Most it pros know that using telnet to manage routers, switches, and firewalls is not exactly a. This will be to the private ip address any help will be greatly appreciated. If your dhcp server is a cisco device, or if you are configuring the switch as a dhcp server, refer to the ip addressing and services section in the cisco ios ip and ip routing configuration guide for cisco ios release 12. Continuing our networking automation using python blog series, here is the part 4. Communication between the client and server is encrypted in both ssh version 1 and ssh version 2. The ssh server and the ssh client are supported only on des 56bit and 3des 168bit data encryption software.
The secure shell ssh is a cryptographic network protocol for operating network services securely over an unsecured network. In order to enable ssh on a cisco router or switch you must verify first if the ios image on the device supports it. There are 3 main steps needed to be followed in order to setup ssh on a cisco switch. Find the line that starts with system image file is. This menu gives you access to the main settings that you will.
The configure navigation menu has four options, smartports, port settings, express setup, and restartreboot. I have never done this before, how do i do this if it is possible. How can i enable ssh on my cisco 3750 catalyst switch. This article is going to shows the ccna students to configure and enable telnet and ssh on cisco router and switches. Ssh allows the administrator to configure the switch through the command line interface cli with a third party program. Apr 27, 2010 learn the basic steps in configuring and testing ssh on a cisco ios router.
Cisco switches will be used for the hands on exercise however this is not a cisco. Most it pros know that using telnet to manage routers, switches, and firewalls is not exactly a security best practice. Cisco content hub connecting, configuring, and upgrading. How to upgrade ios on a cisco 3560 switch using a tar file duration.
How to configure cisco routerswitch to enable ssh secure shell. Configure a cisco switch for ssh access part 1 setup. The switch supports rivest, shamir, and adelman rsa authentication. Learn how to do configure cisco ssh remote access feature using the commandline, by following this simple stepbystep tutorial, you will be able to remotely connect to your cisco switch using ssh and a program like putty.
Telnet unfortunately is not encrypted which is why ssh is commonly used for administration of cisco devices. Configuration of ssh on cisco switch in packet tracer 2019. Security configuring secure shell ssh cisco catalyst. To start configuration, you want to connect the switch console to putty. You must configure the cmpmgmt interface before you can connect to the cmp through a ssh or telnet session. In our example, we are going to use an opensource software named putty and a computer running windows. How to configure ssh on cisco switch or router configuring ssh on cisco switch. Sep 22, 2005 learn how to configure ssh on your cisco router. Configuring trunk ports switch cisco configuring router on a stick share files folder devices printers in peer to pee. How to setup ssh on a cisco switch jared heinrichs.
In the global config section, enable ssh, protocol v1, and protocol v2. The configuraton menu is available from the dashboard which is the tools main page. Mar 29, 2011 ssh or secure shell encrypts the data that is sent from the terminal application to the device. A multipart tutorial for configuring cisco switches for secure access with ssh through a management vlan. Follow these steps to create a local user with username jajish and password as. Configuring cisco ios web server authentication free ccna. Catalyst 4500 series switch software configuration. Download this cisco switch commands cheat sheet as pdf file to have it as reference with you in the field. In the port field, enter the port of ssh server 22 by default. First, you need to access the console of your cisco switch. Jun 11, 2019 if your cisco switch is running an older version of cisco ios image, then it is extremely recommended that you upgrade to latest cisco ios.