Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Ssh passwordless authentication

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Ssh passwordless authentication
# 1  
Old 07-07-2015
Ssh passwordless authentication
Hey team

I have to enable password less authentication betweeen A to B server and A to C server and A to D server.

For this I generated a ssh key on server A using ssh-keygen command and copied the key using ssh-copy-id command to B, C and D server. Everything is working fine as of now but for confirmation is this approach ok
# 2  
Old 07-07-2015
? Its the only safe way I know when using ssh... What is exactly our question?
# 3  
Old 07-07-2015
It is.
ssh-copy-id is a shell script which is written to ease the distribution of keys on Linux systems (not sure about other operating systems).
Code:
user@server:~$ file /usr/bin/ssh-copy-id
/usr/bin/ssh-copy-id: POSIX shell script, ASCII text executable
....
# Shell script to install your public key(s) on a remote machine
# See the ssh-copy-id(1) man page for details
....

You can do that 'by hand' as well (same effect), there are some handy oneliners like
Code:
ssh user@server 'cat >> ~/.ssh/authorized_keys' < ~/.ssh/id_rsa.pub

# 4  
Old 07-07-2015
Thanks for your reply everyone.

The issue I am facing is that it works for sometime like for half an hour but after when I try to login again it asks for password
# 5  
Old 07-07-2015
You are saying that you can connect to server B from server A, and if you try it again you get password prompt ?

I would suspect someone is changing permissions on $HOME and .ssh folders.
They need to be per documentation, check out the section on the following link:

OpenSSH FAQ
# 6  
Old 07-09-2015
Thanks everyone.

This problem has miraculously solved on its own. I am not facing this issue anymore.

Regards
Sandy
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Passwordless Authentication and Anonymous login

Hi, I am in the process FTPing some of my report files from my production server to another FTP server through batch/Shell Script. This is working fine with the password less authentication. Once i place all my report files in the ftp server the end users need to download ... (3 Replies)
Discussion started by: Showdown
3 Replies

2. UNIX for Dummies Questions & Answers

[Solved] Passwordless authentication lost between cluster nodes

after copying the public key then also the passwordless authentication is not working Best regards, Vishal (2 Replies)
Discussion started by: Vishal_dba
2 Replies

3. Ubuntu

Passwordless ssh authentication fails

Unable to set ssh passwordless authentication I am unable to ssh with passwordless authentication from Windows client onto UBuntu server. The ssh version on UBuntu is OpenSSH_5.8p1 Debian-7ubuntu1, OpenSSL 1.0.0e , while SSH on Windows Client is OpenSSH_5.1p1, OpenSSL 0.9.8k. I turned on ssh... (5 Replies)
Discussion started by: tkota
5 Replies

4. Red Hat

ssh private key passwordless authentication

Hello, Need a suggestion to setup private key passwordless authentication. I am not sure this can done or not :wall: here is the sincerio I have two servers, sever1 with a user "user1" and servera with usera here dataflow: usera from servera, will pull/push files to server1 on user1... (2 Replies)
Discussion started by: bobby320
2 Replies

5. Shell Programming and Scripting

ssh passwordless

Hi, I want to login to a remote server and sftp files without password prompting. So, I created private-public key pair as follows: user1@server1.com .ssh]$ ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/home/user1/.ssh/id_rsa): Enter... (7 Replies)
Discussion started by: dips_ag
7 Replies

6. Shell Programming and Scripting

Setup multiple passwordless authentication

I have experience in setting up passwordless authentication by sharing ssh public keys manually.Currently I am in the process to the write a script to perform the same functionality from one source(host) to multiple destinations. I have one source host (Host A) whose public keys has to be shared... (9 Replies)
Discussion started by: Lancel0t
9 Replies

7. Shell Programming and Scripting

passwordless authentication of SFTP script

Dear All I need to discuss about the problem which has been discussed so many times here. I need to transfer a file from server A to server B via passwordless SFTP script. By reading the threads on this topic here, I followed the below steps but still it's not working .. Pls find the steps... (13 Replies)
Discussion started by: uday.shankar
13 Replies

8. HP-UX

Help on passwordless ssh...

Hi, Can someone help me on ssh-keygen usage...? I used ssh-keygen after which "id.pub" file was generated in system1's > .ssh directory... I copied the same into the remote system system2 > .ssh directory as "authorized_keys" file. Now i tried ssh connection from system 1 to system... (7 Replies)
Discussion started by: EmbedUX
7 Replies

9. AIX

Passwordless root authentication via SSH

Hello, I would like to issue a couple of commands as root on a remote machine without having to enter the root password. I used "ssh-keygen -t rsa" to generate the encryption keys, copied the public key to the remote machine, etc. I also tried playing around with the sshd_config file and... (3 Replies)
Discussion started by: sphericon
3 Replies

10. AIX

Passwordless authentication via SSH

I am trying to implement passwordless authentication via ssh2. I have used the well documented technique of generating a key pair with a blank passphrase on my client machine, and installing the public key on the destination server (AIX 5.3) in the user's .ssh2 directory. I have used this technique... (1 Reply)
Discussion started by: RegX
1 Replies
Login or Register to Ask a Question