To work remotely I need to SSH into the main server and then again into the departmental server.
I would like to set up a tunnel using sublime text 3 wbond sftp package to view and edit files remotely but I can't seem to find any information for setting up a tunnel. Is this even possible?
The reason I'm interested in this particular package is because I am unable to install any packages locally on the server, hence using something like rsub is not possible.
Any other suggestions besides sublime sftp are welcome.
I'm not sure the SFTP plugin would allow to do this directly.
What i would suggest is for you to use ssh -L to create a tunnel.
ssh -L localhost:random_unused_port:target_server:22 username_for_middle_server#middle_server -nNT
Use the password/identity_file for the middle server
The -nNT is to avoid opening an interactive shell in the middle server.
IMPORTANT: You need to keep the ssh -L command running so keep that shell open.
In this way you can connect to the target_server as such:
ssh username_for_target_server#localhost -p random_port_you_allocated
Similarly you can setup the SFTP plugin file as such
{
...
"host":"localhost",
"user":"username_for_target_server",
"ssh_key_file": "path_to_target_server_key",
"port":"random_port_you_allocated",
....
}
As a sidenote, always use the same port to tunnel to the same server, otherwise, with the default ssh configuration, you will be warned of a "Man in the middle attack" because the signature saved in the .ssh/known_hosts will not match with the previous one. This can be avoided by disabling this feature but I wouldn't recommend it.
Related
I try to connect with an sftp server using the nodejs package https://github.com/mscdex/ssh2.
In the section "serverHostKey" they list all available host key formats.
I try to connect with a new server, but no matter which format I choose, I cant establish a connection because the format/algorithm is not supported.
Is there a way - a command for the command line - , to see which formats/algorithms a certain server supports?
I already tried WINSCP (shows me only the format WINSCP uses), Putty (same as WINSCP)-
https://superuser.com/questions/868998/how-can-i-find-a-list-of-macs-ciphers-and-kexalgorithms-that-my-openssh-client
The second answer of this question, is the answer of my problem.
ssh USER#HOST -p PORT
I have an ssh connection to a remote machine in my terminal window, and GVim running locally as my text editor. I can mount the remote machine via SSH and open files in my local Vim. I can also edit remote files in my local Vim via Vim's support for editing over SCP.
Say I then use ag on the remote machine to search my project for a symbol:
[user#remote project]$ ag thingy
include/blah/foo.h
1137:void thingy() {
Now what can I type inside my SSH session to send that file to my local editor in a tab? If I were on my local machine, I could do something like gvim -p --remote-tab-silent include/blah/foo.h, but I don't think the Vim +clientserver Remote system can be forwarded over an SSH session, can it? Would it somehow magically work if I set up X11 forwarding? If so, how would Vim work out what remote server to connect to to edit the file? Is there maybe some kind of integration between a vim-embedded terminal session and the netrw system that I could use instead?
If I wanted to roll my own system with shell scripts and netcat and forwarding sockets of some kind over ssh, how might I design that?
The +clientserver mechanism on Linux and Unix systems uses X11:
The communication between client and server goes through the X server. The
display of the Vim server must be specified. The usual protection of the X
server is used, you must be able to open a window on the X server for the
communication to work. It is possible to communicate between different
systems.
If you set up X forwarding properly, you should be able to open the file, although I haven't tested. That means that the remote system should have a $DISPLAY environment variable.
If you haven't specified the server name explicitly, it is usually in the title bar of the window. The first one, on my Debian system, is GVIM, the next is GVIM2, etc. Client/server arguments need to go on the command line in a specific order and first on the command line. I'd try setting this up on a local machine and only then trying it with the remote machine.
I want to send files (txt or csv) from linux to windows.
I already have a script to get information and put it into a .txt or .csv file, tried with many ways to send this file from linux to my computer.
there is a ping from server to my computer IP, but when i use below commands it gives:
ssh: connect to host 10.10.X.X port 22: Connection timed out
scp -r fname.lname#10.10.X.X:/home/ test.txt
or
scp test.txt fname.lname#10.10.X.X:/C:/Data
Please could you help, simply I wanna have a copy of file (that I have it in server) in my computer, to use it.
there is some similar questions with no answer here.
You need a ssh server installed on windows. Windows does not currently have out of the box ssh server. They are thinking of implementing OOB ssh servers in future releases of windows 10.
Have a look at this link https://winscp.net/eng/docs/guide_windows_openssh_server
Also, if the file transfer that you want is a one time transfer, you can use putty with a reverse scp to retrieve the file or you can use WINscp ( https://winscp.net/eng/download.php )
I usually use the command 'nc' for file transmission.
But since on Windows you have to install a cygwin to use nc, so I think the simplest solution may be like the following.
On linux, go to the directory of those files, and then type:
python -m SimpleHTTPServer 1234
Then on windows you can visit 10.10.X.X:1234 in your browser, and download those files.
Note that 1234 can be replaced by any other port which is not currently used on linux.
I am using SSH Secure Shell to connect to a server. My connection is allowed to Tunnel X11 connections but when I execute the command. The display is not showing up. I get the message:
couldn't connect to display "localhost:12.0"
I have a ssh server installed and running on my machine.
Remember: Both the client and the server have to allow X forwarding.
On the server look in /etc/ssh/sshd_config and make sure you have X11Forwarding yes. You will need to restart the service if you edit this file.
On the client look in /etc/ssh/ssh_config (your user ~/.ssh/ssh/config will override global settings, if you have created this file) and make sure you have ForwardX11 yes.
Alternatively give the -X switch when you create your client connection. e.g. ssh -X user#host
Oh and of course, your client needs to be running an X server which you have authority to use! E.g. if you connect from Windows using PuTTY it will never work, as Windows is not an X server!
I figured it out. I needed to have X-Server installed on my computer instead of SSH-Server. I installed Xming for that purpose and now everything works as it should.
I am trying to execute a bat file on remote windows machine on cloud from my Linux. The bat files starts selenium server and then my selenium tests are run. I am not able to start selenium RC server on that machine. I tried with Telnet but the problem with it is when telnet session is closed the RC server port is also closed. As my code my code has to start the server so I tried with ANT telnet task and also executed shell script of telnet in both ways the port was closed.
I read about Open SSH, psexec for linux and cygwin. But i am not getting how to use these and will they will solve my problem.
I have tried to start a service which will start the server but in this method i am not getting browser visible all tests are running in background as my script takes screen shot browser visibility is must.
Now my Question is what to use and which will be preferable for my job.
and what ever i choose should be executed by code it may be by shell, ant or php.
Thanks in advance.
Let's go through the various options you mentioned:
psexec: This is pretty much a PC only thing. Plus, you must make sure that newer Windows machines can get through the UAC that are setup by default. UAC is the thing you see all the time on Vista and Windows 7 when you try to do something that requires administrator's privileges. You can try something called winexe which is a Linux program that can do the psexec protocol, but I've had problems getting it to work.
OpenSSH: There are two main flavors of SSH, and Open SSH is the one used by the vast majority of sites. SSH has several advantages over other methods:
SSH is secure: Your network traffic is encrypted.
SSH can be password independent: You can setup SSH to use private/public keys. This way, you don't even have to know the password on the remote server. This makes it more secure since you don't have passwords being stored on various systems. And, in many Windows sites, passwords have to be changed every month or so or the account is locked.
SSH can do more than just execute remote commands: There are two sub-protocols on SSH called SCP and SFTP. These allow you to transfer files between two machines. Since they work over SSH, you get all of the advantages of SSH including encrypted packets, and public/private key protection.
SSH is well implemented in the Unix World: You'll find SSH clients built into Ant, Maven, and other build tools. Programs like CVS, Subversion, and Git can work over SSH connections too. Unfortunately, the Windows World operates in a different space time dimension. To use SSH on a Windows system requires third party software like Cygwin.
Cygwin: Cygwin is sort of an odd beast. It's a layer on top of Windows that allows many of the Unix/GNU libraries to work over Windows. It was originally developed to allow Unix developers to run their software on Windows DOS systems. However, Cygwin now contains a complete Unix like system including tools such as Perl and Python, BASH shell, and many utilities such as an SSH server. Since Cygwin is open source, you can download it for free and run SSH server. Unfortunately, I've had problems with Cygwin's SSH server. Another issue: If you're running programs remotely, you probably want to run them in a Windows environment and not the Cygwin environment.
I recommend that you look at WinSSHD from Bitvise. It's an OpenSSH implementation of the SSH Server, but it's not open source. It's about $100 per license and you need a license on each server. However, it's a robust implementation and has all of the features SSH has to offer.
You can look at CoSSH which is a package of Cygwin utilities and OpenSSH server. This is free and all open source, but if you want an easy way of setting it up, you have to pay for the Advanced Administrator Console. You don't need the Advanced Administrator Console since you can use Cygwin to set everything up, and it comes with a basic console to help.
I prefer to use cygwin and use SSH to then log in to the windows machine to execute commands. Be aware that, by default, cygwin doesn't have OpenSSH installed.
Once you have SSH working on the windows machine you can run a command on it from the Linux machine like this:
ssh user#windowsmachine 'mycommand.exe'
You can also set up ssh authentication keys so that you don't need to enter a password each time.
I've succeeded to run remote command on W2K3 via EXPECT on Debian Buster. Here is the script of mine:
#!/usr/bin/expect
#
# execute the script in the following manner:
#
# <script> <vindoze> <user> <password> <command>
#
#
set timeout 200
set hostname [lindex $argv 0]
set username [lindex $argv 1]
set password [lindex $argv 2]
set command [lindex $argv 3]
spawn telnet $hostname
expect "login:"
send "$username\r"
expect "password:"
send "$password\r"
expect "C:*"
send "dir c:\\tasks\\logs \r"
# send $command
expect "C:*"
send "exit\r\r\r"
Bear in mind that you need to enable TELNET service of the Win machine and also the user which you are authenticated with must be member of TelnetClients built-in Win group. Or as most of the Win LazyMins do - authenticate with Admin user ;)
I use similar "expect" script for automated collecting & backup configuration of CLI enabled network devices like Allied Telesyn, Cisco, Planet etc.
Cheers,
LAZA
Not a very secure way, but if you have a running webserver you can use PHP or ASP to trigger a system command. Just hide thgat script under www.myserver.com/02124309c9867a7616972f52a55db1b4.php or something. And make sure the command are fixed written in the code, not open via parameter ...