I am trying to use paramiko to connect to a remote host. However, in order to connect, I need to specify a bind address, which you can do with OpenSSH via:
ssh -o BindAddress=x.x.x.x user#host
I've been searching high and low for an equivalent option in the paramiko SSHClient docs, but I can't seem to find it. It seems like this would be a standard option to have. Can someone point me in the right direction? Do I need to create a separate socket connection and use that?
From ssh_config manual:
BindAddress
Use the specified address on the local machine as the source address of the connection.
You might provide a socket to client's connect function, so you might bind the source address in the socket.
Example:
import socket
import paramiko
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.bind(('192.168.223.21', 0)) # set source address
sock.connect(('192.168.223.23', 22)) # connect to the destination address
client = paramiko.SSHClient()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
client.connect('192.168.223.23',
username=username,
password=password,
sock=sock) # pass socket to Paramiko
Documentation: http://docs.paramiko.org/en/2.4/api/client.html).
connect(hostname, port=22, username=None, password=None, pkey=None,
key_filename=None, timeout=None, allow_agent=True, look_for_keys=True,
compress=False, sock=None, gss_auth=False, gss_kex=False,
gss_deleg_creds=True, gss_host=None, banner_timeout=None,
auth_timeout=None, gss_trust_dns=True, passphrase=None)
sock (socket) – an open socket or socket-like object (such as a
Channel) to use for communication to the target host
Related
I have executed commands on server using ssh. Now I have to do another ssh to different IP while keeping old ssh active.
This new IP is port forward which will then used to do SFTP.
Issue I am facing is both ssh connections are on same port so not able to do second ssh.
Which is failing the SFTP.
Any support for same will be helpful.
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(ip, username=username, password=password, port=22)
time.sleep(3)
#Invoke shell to open multiple channel with in one SSH
chan = ssh.invoke_shell()
chan.send(ip1+'\n')
time.sleep(5)
chan.send(pass1+'\n')
time.sleep(10)
chan.send("ssh "+ip2+'\n')
time.sleep(10)
chan.send(pass2+'\n')
time.sleep(5)
#Execute command
chan.send(cmd)
#connect to another ip to do sftp
ssh1 = paramiko.SSHClient()
ssh1.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect("127.0.0.4", username=usr2, password=pass2, port=22)
sftp=ssh.open_sftp()
It looks like misunderstanding. Your code does not do any port forwarding.
For the correct code, see Nested SSH using Python Paramiko.
If you need SFTP, not shell, just do:
jhost.open_sftp()
instead of
jhost.exec_command(command)
Obligatory warning: Do not use AutoAddPolicy – You are losing a protection against MITM attacks by doing so. For a correct solution, see Paramiko "Unknown Server".
Am using python script to ssh the server with PEM key and its require http proxy type as well for successful connection. But getting lambda error while executing the script.
I have tried the same manually to access the server and its working fine as expected.
Kindly update if there is any alternate module or alternate way to resolve this issue at earliest.
import socket
import paramiko
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock1 = sock.connect(('10.x.x.x', 8080))
ssh = paramiko.SSHClient()
privkey = paramiko.RSAKey.from_private_key_file("C:\AccessKey.pem")
ssh.connect('x.x.x.x', port=22, username="admin",pkey=privkey, sock=sock1)[enter image description here][1]
This works:
cnopts = pysftp.CnOpts()
cnopts.hostkeys = None
with pysftp.Connection('ftpsite.com', username='xxx', password='xxx', cnopts=cnopts) as sftp:
with sftp.cd('inbox'):
sftp.get('WinSCP.ini')
But now i want to test straight ftp (port 21), so i add the port attribute:
with pysftp.Connection('ftpsite.com', port=21 , username='xxx', password='xxx', cnopts=cnopts) as sftp:
and now i get this:
Exception: paramiko.ssh_exception.SSHException
Message: Error reading SSH protocol banner
I am confused...
SFTP use SSH so its PORT 22, not 21
FTP use port 21
Like the error said, ssh exception. Try with 'port=22'
source:
port 21 Yes, and SCTP Assigned Official File Transfer Protocol (FTP) control (command)
port 22 Yes, and SCTP Assigned Official Secure Shell (SSH), secure logins, file transfers (scp, sftp) and port forwarding
wikipedia
The pysftp library only talks using the SFTP protocol, which is different from the 'normal' FTP protocol. So what you are seeing is the error when your program tries to talk in SFTP to an FTP server, and doesn't understand the response it gets back.
I have started a simple python socket, and I can freely connect to it from my local computer, but from iPad and another computer, I can't access it! What I am doing wrong? Here is my code:
from socket import socket
server = socket()
server.bind(("", 80))
server.listen(2)
message = """\
</pre><br><br><h1>Hi!</h1></body></html>
"""
while 1:
c, a = server.accept()
print "New connection from %s:%s"%tuple(a)
c.sendall("<html><head><title>Hi!</title></head><body><pre>"+c.recv(4096*20)+message)
c.close()
EDIT
Btw, I am using Linux Fedora 18. On Windows, I didn't have problems with sockets.
In the docs on socket:
If supplied, source_address must be a 2-tuple (host, port) for the socket to bind to as its source address before connecting. If host or port are ‘’ or 0 respectively the OS default behavior will be used.
The default behavior is likely to host on localhost. Try setting host to "0.0.0.0" to allow connectivity outside localhost.
That's how I programmatically Connect to an FTP server:
Python code
ftp = ftplib.FTP (settings.FTP_IP)
ftp.login (settings.FTP_LOGIN, settings.FTP_PASS)
# ...
# here I upload files to the server
# ...
ftp.quit ()
But just as things with IPv4. But how to connect to the server via IPv6?
I watched some liby, tried to put them in the shell, connect, but alas, it did not work.
Tell me if anyone has dealt with this.
After looking at the code of ftplib.py, it seems to me that the code is absolutely ready for IPv6.
The library knows about EPSV and EPRT and uses them where appropriate.
E.g.,
def makepasv(self):
if self.af == socket.AF_INET:
host, port = parse227(self.sendcmd('PASV'))
else:
host, port = parse229(self.sendcmd('EPSV'), self.sock.getpeername())
return host, port
shows that it sends a PASV or an EPSV depending on which IP version we use.