Port forwarding with Paramiko
I'm trying to do some port forwarding from a python app using Paramiko. I can set up the SSH connection just fine, but I'm a bit stumped as to how to use paramiko.Transport
. I've already found this file, but I can't work out what's going on in it. From looking at the paramiko.Transport
docs, it seems that a single line using the open_channel
function, but I can't work out how to implement that. I'm trying to replicate a simple ssh -L 8000:localhost:8000
.
Can anyone help me out?
Solution 1:
Please find some code using paramiko-1.7.7.1
, pycrypto-2.6
and the forward.py script from which I did remove code from the line 115 to the end (to avoid options parsing).
import paramiko, sys
from forward import forward_tunnel
remote_host = "target_host"
remote_port = 8000
local_port = 8000
ssh_host = "my_ssh_host"
ssh_port = 22
user = "login"
password = "s3cr3t"
transport = paramiko.Transport((ssh_host, ssh_port))
# Command for paramiko-1.7.7.1
transport.connect(hostkey = None,
username = user,
password = password,
pkey = None)
try:
forward_tunnel(local_port, remote_host, remote_port, transport)
except KeyboardInterrupt:
print 'Port forwarding stopped.'
sys.exit(0)
I've tested it successfully from a Windows station, using a ssh server under Red Hat and pointing to a 3rd server. (I'm using Python 2.7.2
)
Hope it helps,
Solution 2:
You can use https://github.com/pahaz/sshtunnel
pip install sshtunnel
Code example:
import sshtunnel
with sshtunnel.open(
(ssh_host, ssh_port),
ssh_host_key=None,
ssh_username=ssh_user,
ssh_password=ssh_password,
ssh_private_key=None,
remote_bind_address=(REMOTE_HOST, REMOTE_PORT)) as server:
def do_something(port):
# Do something with port
pass
print("LOCAL PORT:", server.local_bind_port)
do_something(server.local_bind_port)