Q: I have a Cisco switch in my network, which I can access by hooking up a console cable directly to the device. I like to access the switch remotely using SSH. How can I enable ssh on my Cisco 3750 Catalyst Switch?
A: By default, when you configure a Cisco device, you have to use the console cable and connect directly to the system to access it. Follow the steps mentioned below, which will enable SSH access to your Cisco devices. Once you enable SSH, you can access it remotely using PuTTY or any other SSH client.
A: By default, when you configure a Cisco device, you have to use the console cable and connect directly to the system to access it. Follow the steps mentioned below, which will enable SSH access to your Cisco devices. Once you enable SSH, you can access it remotely using PuTTY or any other SSH client.
Crypto ca authenticate through crypto ca trustpoint; crypto key generate rsa; Index; Cisco IOS Security Command Reference: Commands D to L, Cisco IOS XE Release 3SE (Catalyst 3850 Switches) database archive through dns; dnsix-dmdp retries through dynamic; E; F through H; icmp idle-timeout through ip http ezvpn; ip inspect through ip security strip. I did a little research and found out that if I removed the rsa key by using this command ' crypto key zeroize rsa' and then added the 'crypto key generate rsa generate-keys modulus 1024, then that would work. Any thoughts? No service pad. No service password-encryption. Hostname Sales-SW-ACC2. Ip domain name my.company.come. Note When you upgrade to Cisco IOS XE Denali 16.3.5 the SSH access is lost, because it cannot use the CISCOIDEVIDSUDILEGACY RSA server key. Before upgrade, generate the server key using the crypto key generate rsa command in global configuration mode. To verify whether the RSA server key is available on your device, run the.
1. Setup Management IP
First, make sure you have performed basic network configurations on your switch. For example, assign default gateway, assign management ip-address, etc. If this is already done, skip to the next step.
In the following example, the management ip address is set as 192.168.101.2 in the 101 VLAN. The default gateway points to the firewall, which is 192.168.101.1
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2. Set hostname and domain-name
Next, make sure the switch has a hostname and domain-name set properly.
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3. Generate the RSA Keys
The switch or router should have RSA keys that it will use during the SSH process. So, generate these using crypto command as shown below.
Also, if you are running on an older Cisco IOS image, it is highly recommended that you upgrade to latest Cisco IOS.
4. Setup the Line VTY configurations
Setup the following line vty configuration parameters, where input transport is set to SSH. Set the login to local, and password to 7.
If you have not set the console line yet, set it to the following values.
5. Create the username password
If you don’t have an username created already, do it as shown below.
Note: If you don’t have the enable password setup properly, do it now.
Make sure the password-encryption service is turned-on, which will encrypt the password, and when you do “sh run”, you’ll seee only the encrypted password and not clear-text password.
5. Verify SSH access
From the switch, if you do ‘sh ip ssh’, it will confirm that the SSH is enabled on this cisco device.
After the above configurations, login from a remote machine to verify that you can ssh to this cisco switch.
In this example, 192.168.101.2 is the management ip-address of the switch.
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