I know that Paramiko supports Pageant under Windows, but it doesn't work by default.
I am looking for an example of connecting using the key that is loaded in Pageant.
This is what I am using to connect and do an automated login using Pageant to store my key, and connecting to it from within my Python script. It counts on Pageant already being loaded, (and I haven't found a good reliable way to launch it and load the key (prompt for key password)) but the below works for now.
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
host = 'somehost.com'
port = 22
ssh.connect(host, port=port, username='user', allow_agent=True)
stdin,stdout,stderr = ssh.exec_command("ps -ef")
print stdout.read()
print stderr.read()
Related
I am trying to fetch banner from sever using below code. But the result always says "None", even thought banner exists. I have tried with Python 2 and 3, Paramiko 2.4 and 2.7.0, same result as "None".
Can anyone correct/help me?
The code is based on:
Is there a way using paramiko and python to get the banner of the ssh server you connected to?
The banner is configured in sshd_config using Banner directive.
# !/usr/bin/python
import paramiko
def grab_banner(ip_address, port):
client = paramiko.SSHClient()
client.load_system_host_keys()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
try:
client.connect(ip_address, port=port, username='username',
password='bad-password-on-purpose')
except:
return client._transport.get_banner()
if __name__ == '__main__':
print grab_banner('192.168.1.26', 22)
Thanks
In general I believe that your code should work. But as after failed password authentication, Paramiko tries in vain various other authentication methods, the further attempts will discard the banner (it looks like a bug in Paramiko to me).
Prevent that by setting look_for_keys and allow_agent in SSHClient.connect:
try:
client.connect(ip_address, port=port, username='username',
password='bad-password-on-purpose',
look_for_keys=False, allow_agent=False)
except:
return client._transport.get_banner()
Here is a fix for Paramiko that allows retrieving the banner without the above workaround:
https://github.com/paramiko/paramiko/pull/438
It seems very simple, but I searched multiple resources but could not find an answer on how to change a remote Linux system password using Python and with SFTP.
def changepwd():
sftp_client = ssh.open_sftp()
#change password of root on remote server
Are there any built-in modules that I can use to change the password?
Thanks in advance.
Thanks for all you help. This is how I changed the passwd for 'root'.
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(hostname, username=Name, password=Pwd)
print "Connection succesfully established ...with %s " % hostname
stdin, stdout, stderr = ssh.exec_command('echo -e "newpasswd\newPasswd" | passwd')
print "stderr: ", stderr.readlines()
print "pwd: ", stdout.readlines()
ssh.close()
You cannot change password with SFTP protocol.
You can change password with SSH protocol. But the SSH protocol API for changing a password is not support by the most widespread SSH server – OpenSSH. Nor it is supported by the most widespread Python SSH library – Paramiko. So this most likely won't work for you anyway.
So in the end the only viable option is to execute a relevant shell command (passwd or chpasswd) via SSH (e.g. using Paramiko).
I am trying to perform SSH from one system to another using paramiko in python
import paramiko
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(
paramiko.AutoAddPolicy())
ssh.connect('127.0.0.1', username='jesse',
password='lol')
using this reference (http://jessenoller.com/blog/2009/02/05/ssh-programming-with-paramiko-completely-different )
This is the case when we know the password of the system you want to log-in BUT
if i want to login to a system where my public-key is copied and i dont know the password. Is there a way to do this
Thanks in advance
SSHClient.connect accepts a kwarg key_filename, which is a path to the local private key file (or files, if given a list of paths). See the docs.
key_filename (str) – the filename, or list of filenames, of optional private key(s) to try for authentication
Usage:
ssh.connect('<hostname>', username='<username>', key_filename='<path/to/openssh-private-key-file>')
This code should work:
import paramiko
host = "<your-host>"
client = paramiko.SSHClient()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
client.connect(host, username='<your-username>', key_filename="/path/to/.ssh/id_rsa" , port=22)
# Just to test a command
stdin, stdout, stderr = client.exec_command('ls')
for line in stdout.readlines():
print line
client.close()
Here is the documentation of SSHClient.connect()
EDIT : /path/to/.ssh/id_rsa is your private key!
Adding the key to a configured SSH agent would make paramiko use it automatically with no changes to your code.
ssh-add <your private key>
Your code will work as is. Alternatively, the private key can be provided programmatically with
key = paramiko.RSAKey.from_private_key_file(<filename>)
SSHClient.connect(pkey=key)
I am trying to connect to an SFTP through Paramiko with a passphrase protected SSH key. I have loaded the key into Pageant (which I understand is supported by Paramiko) but I can't get it to decrypt my private key.
I have found this example here that references allow_agent=True but this does not appear to be a parameter that can be used with the SFTPClient.
Can anyone advise if it is possible to work with Paramiko and Pageant in this way?
This is my code at the moment - which raises PasswordRequiredException
privatekeyfile = 'path to key'
mykey = paramiko.RSAKey.from_private_key_file(privatekeyfile)
transport = paramiko.Transport(('host', 'port'))
transport.connect('username',pkey = mykey)
sftp = paramiko.SFTPClient.from_transport(transport)
You have to provide a passphrase, when loading an encrypted key using the RSAKey.from_private_key_file.
Though note that you do not have to load the key at all, when using the Pageant. That's the point of using an authentication agent. But only the SSHClient class supports the Pageant. The Transport class does not, on its own.
You can follow the code in How to use Pageant with Paramiko on Windows?
Though as the allow_agent is True by default, there is actually nothing special about the code.
Once connected and authenticated, use the SSHClient.open_sftp method to get your instance of the SFTPClient.
ssh = paramiko.SSHClient()
ssh.connect(host, username='user', allow_agent=True)
sftp = ssh.open_sftp()
You will also need to verify the host key:
Paramiko "Unknown Server"
This worked for me
privatekeyfile = 'path to key'
mykey = paramiko.RSAKey.from_private_key_file(privatekeyfile)
ssh_client = paramiko.SSHClient()
ssh_client.load_system_host_keys()
ssh_client.connect(hostname='host', username='user', allow_agent=True, pkey=mykey)
ftp_client = ssh_client.open_sftp()
print(ftp_client.listdir('/'))
Is there a way using Paramiko and Python to get the banner of the SSH server you attempt to connect to?
I am dealing with an ultra secure server setup process for many machines and the passwords are generated via a predefined cipher key which get's printed out at with the SSH banner. I have access to the utility that will give me the password, but I need the text in the banner to actually generate the initial password.
Looks like this wasn't a feature. Good thing I requested it and the totally awesome developers put it in...
https://github.com/paramiko/paramiko/issues/273
# !/usr/bin/python
import paramiko
def grab_banner(ip_address, port):
client = paramiko.SSHClient()
client.load_system_host_keys()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
try:
client.connect(ip_address, port=port, username='username', password='bad-password-on-purpose')
except:
return client._transport.get_banner()
if __name__ == '__main__':
print grab_banner('192.168.1.26', 22)