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Multiple public/private key pairs for the same user

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http://serverfault.com – First, sorry if this question has already been asked/answered - I've searched but perhaps I haven't recognised the answer.... What we have is a cluster of servers which need to access a single remote server using sftp. We are migrating from one remote server to another at the same (remote) location. We also want to refresh the public/private key pairs on the configuration as part of an ongoing security review. My question is - can we have multiple public/private key pairs for the same user between server A and server B? I want to do this to allow for cutover testing - but am concerned tha (HowTos)

xskl's picture
Submitted by xskl on 10/08/2012

Stories similar to Multiple public/private key pairs for the same user

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Usually, people say, that using single public key on several servers is just as secure as using unique public keys on each of them. (If we're not talking about possibility of private key being compromised)

But... I don't get, if it's possible to "spoof your authentication" in the following case:

Preconditions

Suppose you're a happy owner of PC-1.

I use a classical pair of private/public key in order to connect into servers.

For now, we have one dedicated account, let's say foo, which is used by multiple users, each with their own pairs of public/private keys.

I am looking for a way to log which user authenticated on this foo account.

secure private key 1 year 5 weeks ago

Hello all,

We have unix environment and we would like to use ssh public and private key to move between server using ssh.

I have two servers. Both servers are in CentOS 5.6. I want to SSH from Server 1 to Server 2 using a private key I have (OpenSSH SSH-2 Private Key).

I don't know how to do it over unix. But what I did on windows using Putty was to feed my OpenSSH private key to putty-gen and generate a private key in PPK format.

I have two servers in a datacenter, both running Windows Server 2008 R2. Both of these servers have 2 NICs. I am trying to setup one NIC to be used for public access and the other for a private network between the two servers (I have been assigned 2 private IP addresses by the datacenter).

I setup the first NIC (public) fine.

I got a Debian server with a public and a private IP in a DMZ. I need to be able to connect to it through SSH on our private side, and then block all access to the public address. Both /etc/hosts.deny and sshd_config seems to only let one block incoming IP addresses.

So we have 2 servers all running at the same web host. We have bind MySQL to listen on the public ip-address of the database server and the web server connects to it from the public ip.

SFTP / SCP using password 39 weeks 1 day ago

Hi,

I was provided with sftp servername, user and password and the requirement is to connect to sftp server using credentials provided and drop the file. Manually i am able to connect with commands like sftp user@servername and after clicking enter, i was asked for a password and entering the password i am able to get it the remote server. How can i do the same using scripts i.e when i execute

I am trying to setup a samba server with two shares where one is public and the other private. I am keeping the security as share to make both the shares visible when people access just the ip from their windows box. But when I am trying to open the private share, the user is automatically taken up as guest and the username box is disabled.