It also checks if the key already exists on the server. Thanks for solving this headache for me! This should either prevent the prompt entirely or allow the -batch mode to proceed with the valid key. I'm a bit late with this response, but the sensible way would be to do a ssh-keyscan on the new machine before you run the uptime gathering. They are access credentials just like user names and passwords. Make sure you remove permission for others to read this file. It can easily accidentally install multiple keys or unintended keys as authorized. Please let me know if this is confusing.
Even though you will not need a password to log into a system, you will need to have access to the key. Thanks bud, this was exactly what I was looking for. The purpose of ssh-copy-id is to make setting up public key authentication easier. This was useful in a case I just had. Whenever you need to use scp to copy files, it asks for passwords. This is a nice defense against attacks, but it plays havoc on scripts. Make sure on the server contains PubkeyAuthentication yes.
Here is the post that I found: I know it's an old post, but this might be a way to use Powershell with pscp and keep a little bit of security. The file is a special system device file that discards anything and everything written to it, and when used as the input file, returns End Of File immediately. This article is very useful. ToString As already mentioned - not fully tested and unfinished. Unix System Admin Anonymous said. Remember to restart the process on the server.
If you make it this far in the article, you may find the following more recent ssh articles interesting: Anonymous said. Do this only if you want to use the root login. Using a key without a passphrase can be more of a risk than you may want. Effectively, ssh key copied to server. Thanks for this great article.
It's still an unfinished not fully tested script but maybe one way. If the keys differ, you will receive a warning and a chance to abandon your connection before you enter any private information such as a password. With sshpass, you are able to specify the password on the command line and skip this step. It also works with parallel-ssh utility with -O for getting at many clients quick and effective. It further ensures that the key files have appropriate permissions.
Do not confuse host public key with your. Thanks Buddy for this article. Unless the -f option is given, each key is only added to the authorized keys file once. Make sure you check the other ways to pass the password to sshpass - they offer more secure ways than directly on the command line with the -p option. Search no more, this tutorial has the answer! To the guy with the multiple servers: If you have multiple machines that can be reached with the same name, such as a load balanced pair of webservers, then include both host keys under the shared name. If, in the end, the manual option is the only way to accept the key, then I will be ok with that.
What I am looking for is that any software on windows that can do that. Someone could be eavesdropping on you right now man-in-the-middle attack! If a prompt occurs, your script stops and waits for input. While there are still vulnerabilities this way, they're much smaller than using a key without a passphrase. Read the output to see what it says about whether the key is tried and what authentication methods the server is willing to accept. I know there are some solutions for Linux environment, but this one is Windows. This can be used for overriding configuration settings for the client. Please contact your system administrator.
Check that includes PubkeyAuthentication yes. This is what I was looking for. I am adding to it. When using plink through systemexec. You only type them once when you write your script and they only affect that instance of ssh. We are in a closed lab, so I am not too worried about security. Thank you to everyone who has any ideas at all.
What could be the problem and how could I fix this? Remote login using the protocol is a frequent activity in today's internet world. Doing this with a few hundreds virtual machines is not fun. The following example illustates this. If the host signature changes due to an upgrade, then ssh stores that key, too. Using this technique, an attacker would be able to learn the password that guards your login account, and could then log in as if they were you and use the account for their own purposes.
For some reason lots of people seem to think this would be a really useful feature. This is the best way. Whether or not to trust the host key is your choice. Keyboard-interactive authentication is disabled to avoid man-in-the-middle attacks. Is there a way to parametrize ssh to automatically accept any new key? One old one and one new one. But be warned that you have become vulnerable to man-in-the-middle attacks.