I want to change my remote server SSH. Currently I login through a .pem file
ssh -l ubuntu -i .ssh/myfile.pem XX.XX.XXX.XXX
I tried to find how to change that access key but I found only that methor :
ssh-keygen -t rsa -b 2048
cp id_rsa.pub authorised_keys
scp authorized_keys ubuntu#XX.XX.XXX.XXX:/home/ubuntu/.ssh
I see no .pem file generated, plus how can I connect now ?
I want to make sure before I do anything so I don't lose ability to connect via SSH.
Should I remove the old key with :
ssh-keygen -R hostname
If yes, when ? after or before the scp ? if after this will remove both keys, if before then I wouldn't be able to perform scp !!!
I am a bot confused.
I see no .pem file in my remote, the pem file is only in my local .ssh folder. in remote .ssh I see :
With "ssh-keygen" command you generate a pair of public and private keys (by default stored in $HOME/.ssh).
Then you copy the public key in your remote server, and the private key in your local client (with permissions 0600). You can use "ssh-add" command to add the private key to the authentication agent to be able to connect to the remote server.
Related
i have a server which is access remote connection only with SSH key auth
i have a key which is stored in my home directory with .pem extension
but when im trying to copy file using the scp command
scp /home/myfilewhichiwannatocopy core#54.32.14.156:/home/core the server asks for password but i don't have it ( btw normal connection using the ssh -i /.ssh/mg.service.pem core#54.32.14.156 fully works) and how to make the scp command for using the key auth?
scp -i /path/to/key.pem somefile.txt user#<machine>:/path
Might I also add, you can consult the man pages https://linux.die.net/man/1/scp
I am given with id_rsa.pub from client. And I was told to connect to it. I tried adding the key with ssh-copy-id user#ec2-remoteserver.com
But it gave the error. Permission denied (publickey).
Then I thought of trying to connect with
ssh -i /c/Users/kdash/Desktop/id_rsa.pub user#ec2-instance.com
It now says the error
Load key "/c/Users/kdash/Desktop/id_rsa.pub": invalid format
Can anyone please help me understand how shall I add the given .pub key file and access to the remote server.
Earlier I had connected to servers with .pem files as such:
ssh -i /c/Users/kdash/Desktop/server.pem user#ec2-instance.com
I am not clear how .pub file can be used.
Client should provide you the private key to connect to server.
I am sure client must have added the public key in their ~/.ssh/authorized_keys
Once client provide you the private-key file, then you can connect as
ssh -i <private-key> user#ec2-instance.com
See example here, remote machine is adding public key in ~/.ssh/authorized_keys and then user can connect to it using private key.
So I guess, you need private key file to connect to remote ssh server.
Remote machine should never add private key in ~/.ssh/authorized_keys.
I want to copy big files from one linux server(SLES11) to another(SunOS) via bash scripting. I dont want to have a password promt so I used ssh-keygen to generate key about this connection.These are the steps I followed:
ssh-keygen -t rsa -b 2048
ssh-copy-id -i /home/username/.ssh/id_rsa.pub swtrans#111.111.111.111
ssh -i id_rsa.pub swtrans#111.111.111.111
After this scp command still requests password.
I am not 'root' user in both servers.
I changed permissions to 700 to the .ssh directory and 640 to the file authorized_keys in the remote server.
ssh -i id_rsa.pub swtrans#111.111.111.111
The -i argument accepts the private key, not the public one. You should use
ssh -i id_rsa swtrans#111.111.111.111
If it will not help, please provide the errors you can see in the server log and in the client
I've set a passwordless connection through ssh using SSH key pair.
So if I run the command:
ssh -i /root/.ssh/root_master master#ip
I'm able to connect to master#ip without typing the pwd.
However I would like to connect without typing
-i /root/.ssh/root_master
but just typing
ssh master#ip
Can anyone help me?
localHost $ ssh remotePassword#remoteHostname
If you want to connect to remote server just by typing above command; you must create ssh trust between your local host and remote host.
Step 1: Create ssh setup on both the host. ( usually, .ssh directory is present at ~ directory )
Step 2: Generate RSA key pair on both the hosts. To generate RSA key pair
cd ~; mkdir -p .ssh; cd .ssh
ssh-keygen -t rsa -f "id_rsa" -N "\" -P "\"; chmod 400 id_rsa
touch authorized_keys; touch known_hosts
Step 3: Write id_rsa.pub file of local host to authorized_keys file of remote host and vice-versa (in case, you want to build both sides trust)
Step 4: Also make entry into known_hosts file or it will automatically create when you will connect for the first time.
This way you can create ssh trust between host and so make them passwordless.
Another way to do this is to usee new ssh module of perl.
I'm new to Amazon web services and have managed to set up an instance.
I already have the ssh directory on my machine at: /usr/bin/ssh
I have also downloaded a Pem key file to my machine and have tried to copy my Pem key file into that directory but I cannot navigate to it. When I try:
cd /usr/bin/ssh
I get:
-bash: cd: /usr/bin/ssh: Not a directory
When I just try to type the command:
ssh
I get the following:
BEGIN: command not found
: command not found2: MIIEpAIBAAKCAQEAu6JORnapcVdvAwPm+6LVBA3n8chlGU4nE0g9nyD8zSDWlATJpf1Td35tPrxj
: No such file or directory
can anyone help with this?
I'm on OSX Lion 10.8.4 if that helps!
Your problem appears to be related to configuring the ssh keys. First, some clarifications:
/usr/bin/ssh is not a directory, it is the actual secure shell program. Do not modify it. (If you have already destroyed your ssh installation, you would need to restore the installation: http://support.apple.com/kb/PH10763).
ssh will use a public and a private key (keypair) to authenticate. The private key should be stored locally on your computer, generally in the .ssh folder inside your home directory (~/.ssh)
You may have generated the keypair yourself, or have gotten one generated by AWS.
I will assume your .pem file is the private key portion of the keypair, and that you have downloaded that from AWS after following a procedure along the lines of: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/how-to-have-aws-create-the-key-pair-for-you.html.
In that case, you need to simply:
copy the .pem file into your ~/.ssh directory.
rename it to id_rsa
ensure that you have correctly set permissions for the private key and .ssh directory (ssh is picky), typically 600 for the id_rsa file and 700 for the .ssh directory.
initiate the ssh connection via ssh username#host