Using Rsa Keys Generated From Switch 4510r

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Recently, my desktop hard disk crashed. So I reinstalled Linux and created a new set of private RSA keys for authentication. However, two of my remote UNIX servers still uses old DSA keys. I do not remember root password for those servers. I do have backup of private and public DSA keys and currently stored in /backup/home/user/.ssh/id_dsa and /backup/home/user/.ssh/id_dsa.pub. How do I force my ssh clients to use identity file /backup/home/user/.ssh/id_dsa to get back to my remote UNIX servers?

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To create a new key pair, select the type of key to generate from the bottom of the screen (using SSH-2 RSA with 2048 bit key size is good for most people; another good well-known alternative is ECDSA). Then click Generate, and start moving the mouse within the Window. Putty uses mouse movements to collect randomness. Aug 22, 2013 Next, make sure the switch has a hostname and domain-name set properly. # config t (config)# hostname myswitch (config)# ip domain-name thegeekstuff.com 3. Aimersoft video converter ultimate key generator reviews. 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.

The ssh client allows you to selects a file from which the identity (private key) for RSA or DSA authentication is read. The default is ~/.ssh/identity for protocol version 1, and ~/.ssh/id_rsa and ~/.ssh/id_dsa for protocol version 2. Identity files may also be specified on a per-host basis in the configuration file. It is possible to have multiple -i options (and multiple identities specified in configuration files). The syntax is as follows:

To use /backup/home/user/.ssh/id_dsa, enter:

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~/.ssh/config SSH Client Configuration

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You can set identity file in ~/.ssh/config as follows:
vi ~/.ssh/config
Add both host names and their identity file as follows:

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You can add other settings per host such as port number, X11 forwarding, real hostnames and much more. Save and close the file. You can connect as follows:

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Recommended readings:

  • See the ssh_config and sshd man page for more information.

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