An SSH tunnel provides an encrypted channel based on the SSH protocol.

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SSH reverse forward to a node “behind” the SSH server node

Scenario - SSH client, Windows laptop with Samba enabled (port 445. Don't care about netbios) SSH server "TestingLAB". This machine has 2 interfaces, "publicIP" which I use to connect from my ...
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125 views

Reverse AutoSSH working, but the proxied LISTEN ports fail randomly

I'm having a hard time describing the error, sorry for the lengthy explanation: I have a successful, working, stable reverse AutoSSH solution nailed up between a client beagle board and a server. The ...
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144 views

Ubuntu 14.04 I can't get SSH tunneling to work with -g switch?

I'm running this command on myServer: ssh -g -p 9922 -f myuser@serverOnOpenInternet -L 1212:serverBehindFirewall:80 -N serverOnOpenInternet runs sshd on port 9922. (not my call) Once I run the ...
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76 views

Forwarding traffic coming from SSH tunnel to VPN tunnel on a Linux device

I want to route network traffic that comes from one end of an ssh tunnel (constructed by ssh dynamic port-forwarding) into one end of a VPN tunnel. Given four Linux devices A, B, C and D, for ...
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69 views

Tunnelling through multiple machines on Red Hat with varying users and keys

I'm trying to SSH tunnel hop to a Tomcat7 server where JMX was configured on port 9090. Essentially: localhost > hostB > hostC. In a terminal, from localhost to hostB: ssh -L ...
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133 views

It is possible to make an IPSEC VPN Bonding?

I wanted to know if It is possible to bound two IPSEC tunnels ? I've already done a VPN bonding of SSH tunnels, but It will be better if I use IPSEC.
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149 views

Mounting nfs4 partition over ssh tunel

I am following this manual on how to mount an nfs port over an ssh tunnel: https://blogs.oracle.com/shepler/entry/tunneling_nfs_traffic_via_ssh I need this because I want to mount an nfs partition ...
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Appearing to be on the same network

I have a user that needs to connect to a machine located on a private network at another facility. Basically 192.168.0.20 -> 192.168.0.1 -> Internet -> 192.168.1.1 -> 192.168.2.1 -> ...
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95 views

Automating setup of the SSH tunnel

I need to frequently login to many machines but I can only login to them from a proxy machine or using an SSH tunnel (by tunneling through that proxy machine). The problem is that I cannot use ...
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1k views

CentOS with AutoSSH, Port Forwarding Clarification

I'm using autossh and set it up like shown in the following example: http://surniaulula.com/2012/12/10/autossh-startup-script-for-multiple-tunnels/ I found it works really well, but need some ...
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127 views

UDP Tunnel via SSH Confusion

Overview: I have a software program which communities on UDP port 1046 and I am hoping to hook two computers together. Laptop (Required to ALWAYS have VPN connection) Desktop (Public ip address) ...
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291 views

SSHD_CONFIG keeps corrupting on reverse SSH setup

I have a reverse SSH setup to traverse an impenetrable CGN NAT. It works well, but the SSHD daemon on the client behind the NAT keeps dieing for unknown reasons (fails to start-up). The client ...
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72 views

Using SSH to allow Internet access

I have two hosts running on separate networks; A win7 machine and a Linux machine. Firewalls on the win7 subnet does not allow access to Internet resources, but it allows access to the Linux machine, ...
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9k views

SSH tunneling fails with “administratively prohibited: open failed” [duplicate]

I am trying to connect to internet via a server in local network. I don't have permissions to change server configuration. I want to do a ssh tunnel to that server and via that using socks proxy, I ...
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340 views

Run script after GDM login into GNOME?

I recently bought a laptop and wrote a script that sets up a reverse ssh tunnel if a certain user logs in through GDM. I did this because I've had a laptop stolen in the past and would like to be ...
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106 views

Forcing broswers to use a different host and port when viewing websites over ssh-tunnels

I've setup an ssh tunnel to a network that has a website I need to view. However, when requesting the page my browsers sends the host localhost and url http://localhost:1234 in the HTTP headers. Is ...
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125 views

xtightvnc through ssh gateway — connection refused

Following setup: homepc -> gateway -> workpc workpc:~$ tightvncserver :12 homepc:~$ ssh -N gatewayuser@gateway -L 1212:workpc:5912 Now I try to connect via homepc:~$ xtightvncviewer ...
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129 views

How to get information from sshd about established remote tunnels

I have a server running on which from many different places people log on via ssh and open remote ssh-tunnels to other places behind different firewalls. Now I want to try to get an overview, which ...
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186 views

Cron job running but not establishing tunnel

I have a script which establishes a reverse tunnel on an endpoint HostB. It looks like this: cat tun.sh #!/usr/bin/env bash # Test code /usr/bin/ssh -V 1> /home/userA/bin/tun.stdout 2> ...
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70 views

ssh connection hangs when looking up a SERVFAIL domain

Scenario: I am browsing the internet through an ssh -D port-forwarding tunnel, both browsing (http, https, ...) connections and domain lookup queries are done using this SOCKS 5 local proxy. The ...
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317 views

ssh local tunnel to VM

So, can anyone explain why this doesn't work? Everything from remote host (192.168.1.3): ssh -L 9000:192.168.1.2:80 login@192.168.1.2 elinks http:127.0.0.1:9000 and I can see a web page. other ...
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717 views

IBM AIX: How do I set up SSH X forwarding on an unprivileged user with no home?

Long story short: I have an AIX server where my user is unprivileged and has no home directory, and it is not easy to fix this because OS-level management of this server is outside of my jurisdiction. ...
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368 views

Disable SSH Tunnel with KVM VNC Server

Here at work we've set up a KVM server that hosts a couple guest machines. The KVM itself is headless and we remote into whenever needed, but we would like to be able to VNC into the guests. I have ...
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515 views

Reverse tunnelling with “stunnel” in linux

Scenario: Central Log-Server(logserv)- only private IP interfaces Multiple client servers (logclient)- has public IPs. Requirement: Need to tcp logs of syslog application from various logclients ...
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312 views

SSH -L Tunnel no longer working

Local machine running my scripts needs to access a remote server's DB. Last week I could do, on the local machine ssh -f -N -T -L1081:localhost:3306 ueser@remoteserver -p2222 on the local machine: ...
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166 views

What does “bind_address” mean in SSH port forwarding?

In SSH local forwarding: -L [bind_address:]port:host:hostport Specifies that the given port on the local (client) host is to be forwarded to the given host and port on the remote side. ...
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667 views

Connect to LAN resource via ssh tunnel

I have the following problem. From machine A I connect to machine B over the internet via ssh and port forwarding. Machine B is part of my local network and has connection to machine C which acts as a ...
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1answer
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SSH - How To Make Three Computer Tunnel?

ComputerA connects though putty to Server at port 77, and there is a reverse tunnel set up from the Server at port 6666 to ComputerA at port 22. ComputerA also has a ssh server set up with a user ...
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68 views

set up secure connection over SSH

I'm setting up a server application which requires to establish a secure connection over SSH2, e.g. a client must open SSH2 connection to the server to reach specific application: % ssh -s -p5000 ...
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1answer
60 views

Correct ssh config file settings to tunnel to a 3rd machine

I'm trying to tunnel to and end server via a bridge server. So far, I've been able to get it working from the command shell properly using the following command: ssh -A -t ...
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1answer
76 views

How SSH Tunneling is working

can someone explain how the following ssh tunneling is working ? ssh root@localhost -P 2222 -pw 1234 L 3300:remote_WIN_machine1:3389 this ssh command is running from Linux machine while the remote ...
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1answer
705 views

Remote Xfce session in a separate console?

I have the following setups: A netbook with Xubuntu 14.04 and desktop PC with Debian 7. I can connect from netbook to desktop through SSH. I want to start a separate X server on netbook and host on ...
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894 views

How does a cisco device know if I'm connecting via telnet or ssh?

I'm experiencing strange behavior with a Cisco UC520 router. When I am directly connected to the router and telnet to it using this: telnet 192.168.1.1 23 Then I get a successful login prompt: ...
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1answer
121 views

Supply additional ssh options in config file

How can I supply additional options in .ssh/config? I know that information like Host, Port, User etc. may be used in the ssh-configuration file to abbreviate ssh commands. I frequently create ...
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1answer
94 views

How to forward port after tunneling

Today I have read this question and answer (How does reverse SSH tunneling work?). I tried it out and it worked perfectly however I want to know one thing. Say I have a web server running on port 8000 ...
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1answer
17 views

Port tunneling via ssh. Is the traffic redirected via port 22?

I wonder, whether the whole traffic is redirected through port 22, if I create a SSH tunnel? For example if I create a tunnel to a remote pc joes-pc, will it be enough to open port 22 on joes-pc? ...
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2answers
73 views

tunnelling ssh through ssh

I have a situation where I have a Windows 10 virtual machine running under VirtualBox on my linux desktop. This virtual machine (and at the moment only this virtual machine) can establish a VPN ...
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1answer
59 views

Port forwarding error

I am trying to use VNC on my KVM guest, following this guide: http://blog.scottlowe.org/2013/08/21/accessing-vnc-consoles-of-kvm-guests-via-ssh/ This is the ssh command I am using from my host: ...
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245 views

How do I tunnel traffic through a VPN and then through another machine

I recently started working from home using a laptop (A) that connects to a corporate network over a VPN. The VPN end point (B) on the corporate side then has two ports, 3389 for RDP and 22 for ssh, ...
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1answer
236 views

Hop scp and sshfs using ssh tunnels

Here's what I have: A desktop and a laptop both behind a firewall, both of which can connect to an ssh capable server. Here's what I can do: Create a tunnel from server to desktop by running this ...
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1answer
295 views

Can I use `screen` to keep an ssh tunnel alive from the client?

I read here that you can keep your ssh sessions alive a bit longer using a utility called GNU screen. Is it possible to keep an SSH tunnel alive longer with this as well?
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1answer
572 views

Multiple SSH tunnel through raspberry pi?

In my home network I have a PC, raspberry pi, macbook and a few other devices which I want to access away from home. As it stands, I have setup VNC server on my PC along with remote desktop and have ...
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1answer
4k views

Remote desktop (KDE) over SSH reverse tunnel

I have a reverse ssh tunnel through a middleman server set up and working. I'm running Kubuntu 12.04 here and on the remote machine. I want to open a remote desktop session. Until now I've been ...
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1answer
474 views

Using ssh_alias with ssh tunneling

I am using ssh tunneling to login to system behind gateway. Problem is that I have ssh_alias defined in ~/.ssh/config on gateway server. Where I have key and ip setup. But those alias don't work ...
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1answer
292 views

How to run svn when ssh over ssh?

I need to run sudo -u wwwrun sh -c 'svn status -uq /srv/www/htdocs/loquat' over ssh. When using one ssh it works smoothly. Now there is one server that needs to be connected through another server via ...
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24 views

reverse tunnel on a multi hops ssh tunnel

I'm a windows user, that needs to access his server at home using a double hop ssh tunnel. I've configured via putty, a socks tunnel on a 2 hops ssh connection using a dynamic port, based on this ...
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9 views

Rasbian AFP-SSH-Tunnel

I've Rasbian running on my Raspberry Pi which is connected to the internet over a router and registered on a free DNS-Server to connect to it. I have configured Rasbian to work as an afp-server to ...
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Question about SSH tunneling

Consider this scenario. I have network manager on Server (S) and a network machine (N) both in a different network."N" can only be accessed via VPN..... .My laptop (L) is in the same subnetwork of ...
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Why the virtual interface is down when I establish a layer-3 SSH VPN using “tun” devices

I would like to establish a layer-3 SSH VPN on Ubuntu 14.04. To create a tun virtual device, I used the command ssh -f -w 0:0 root@41.33.17.26 -p 2010 true, it creates the interface 'tun0' but the ...
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Permanent proxy by sshuttle to Tunnel all the traffic

I need to set a proxy for my server. So I ran sshuttle on my server as follows:screen -dmS proxy sshuttle --dns -r alex@152.21.94.233:2020 0/0 When I log out the session, I can not login to the ...