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

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4k views

system wide SOCKS5 Proxy

I connect to my Server on the internet using ssh -D 3128 user@rootserver.com. If I am right I thereby open a SOCKS v5 Proxy to my Server. Using firefox and FoxyProxy I can now add this to my proxys ...
2
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1answer
57 views

Is sshd_config TPCKeepAlive still using unencrypted channel and therefore vulnerable

This post from 2008 in ubuntuforums recommends disabling TCPKeepAlive Disable TCP KeepAlive messages. These messages are spoofable and are sent outside of the encrypted channel, and ...
2
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2answers
12k views

Bash script calls expect script with master SSH connection

I'm trying to write a bash script that calls an expect script to establish a master SSH connection to be used for the remaining SSH commands in the bash script. ~/.ssh/config: ControlMaster auto ...
2
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1answer
950 views

create a tunnel to a local server

Using a VPN, I am connected through SSH on a distant Ubuntu Computer. From this computer, I can browse using telnet through a local server (192.168.x.x). Is there any way, from the terminal or ...
2
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1answer
482 views

Tunneling SSH through multiple machines (for SOCKS)

I have seen questions on tunnelling SSH through multiple machines but I want to tunnel a SOCKS connection. Normally I would use something like ssh -C2qTnN -D 8080 username@remote_machine to make the ...
2
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1answer
3k views

how to specify the forwarding port when using multiple tsocks services?

According to the answer of this question, I have my /etc/tsocks.conf containing these lines: path { server = localhost server_port = 1081 reaches = <ip-address-of-server-b>/32 } path { server = ...
2
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1answer
118 views

Why doesn't FTP work through my ssh tunnel?

Computer A (assumed that ip is 44.44.44.44)can ftp the host 130.89.148.12. ftp 130.89.148.12 Connected to 130.89.148.12. 220 ftp.debian.org FTP server Name (130.89.148.12:debian8): anonymous 331 ...
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3answers
944 views

Copying a file using SSH over a tunnel with cert forwarding

I need to find a way to copy files from mymachine to a server priv-server sitting on a private NATted network via a server pub-server with a public IP. The behind-NAT machine priv-server only has ...
2
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2answers
368 views

run a local SOCKS proxy tunneled through SSH

I was going through this post and couldn't quiet follow what is being implied there. A great "feature" I use every day at work: The ability to have SSH listen on port 443 so I can create a ...
2
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2answers
1k views

Tunnels to the same port number

I have an application that connects to several hosts on the same port: a.protected:123 b.protected:123 I don't have direct access to either of them, but I can make a ssh tunnel (through x....
2
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2answers
621 views

ssh reverse tunneling not working

So, I have a server and a home machine. My server can't talk to internet, but my home machine can. So, I set up a reverse tunnel through home to server using: ssh -R 9001:www.google.com:80 server ...
2
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1answer
396 views

ngircd refuses connection over ssh tunnel

This might be just a misunderstanding of how ssh tunneling works, but here goes: In my ngirgd.conf file I have the following: Ports = 6669 Listen = 127.0.0.1 This ngircd server is running on HostA....
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1answer
592 views

How to recover from a corrupt xdebug session?

Sometimes my local computer crashes when I'm in the middle of a xdebug session. When I reconnect to my remote server with a reverse shell I get this warning: Warning: remote port forwarding failed ...
2
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1answer
338 views

How do I create a SSH user that can only access MySQL?

I want to set up an SSH tunnel to my MySQL database on a remote server. Can I create an SSH user that has only the minimum permissions that are strictly necessary to access MySQL, for example with a ...
2
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1answer
140 views

If I use an SSH tunnel to forward a remote port to a local one, and my IP address changes, will that tunnel still work?

Simple - trying to use my personal computer as a server, by forwarding a public static IP address's port to mine, but I'm worried about Comcast pulling out the rug from underneath my feet and changing ...
2
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1answer
500 views

ssh login with a tunnel through intermediate server in a single command?

Is there a way in a single SSH command to login via SSH to a remote server passing through an intermediate server? In essence, I need to create a tunnel to my "bridge server" and via the tunnel to ...
2
votes
1answer
981 views

How can I remotely access an intranet website from an external network via an SSH tunnel?

I recently setup FreeIPA on an internally accessible system at home. I'd like to manage this web UI from networks that are external to my LAN, but at the same time, I don't want to have to expose this ...
2
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1answer
59 views

Correctly closing multiple hop SSH tunnel

I want to tunnel VNC traffic to host2, which is only accessible from host1, whereas host1 is publicly accessible. I setup a multi-hop SSH tunnel as described in this question, using: ssh -L 5901:...
2
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1answer
1k views

How to create reverse dynamic ssh port forwarding

I'm trying to set up an ssh tunnel layout where: client A (not ssh-server enabled) initiates ssh connection to server S socks server is opened on server S:yyyy that tunnels all data via client A ...
2
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2answers
810 views

Allow multiple remote connections to an ssh Dynamic forwarded port

Let us assume I have three machines A - Server to which I am sshing to B - Client from which I am sshing C - Another Client in B's subnet Now, I set up dynamic port forwarding for port 1235 by ...
2
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1answer
1k views

Is there anyway to run gnome desktop via a remote x window ssh tunnel?

I'd like to run the DE remotely in a window of it's own on my local workstation. When I tried the naive gnome-session from an x-window tunnel it tried to takeover my local xfce desktop, got as far as ...
2
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1answer
889 views

ssh into a server which is connected to a VPN service

I have a virtual private server, which I would like to run a web server while my server is connected to a VPN service When the VPN connection to my provider is not up, I can do anything I want with ...
2
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1answer
42 views

SHH Tunneling only accepted on some ports

I'm working with Server running Ubuntu Server 14.04. I use Plink to request some reverse tunnels from a remote computer to the server. For some ports that works just fine, but for most ports it seems ...
2
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1answer
413 views

Does `ssh -D` proxy DNS request?

Is DNS resolution tunneled to the other end when I use a SOCKS proxy created with ssh -D? I have read the manual, searched the Internet, and found no documentation relevant.
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1answer
381 views

Creating an SSH tunnel from a linux VPS to a web server database

I'm creating a server application that clients will connect to. The server application is running on an Ubuntu Server 14.04.1 VPS. The server needs to be able to connect to a MySQL database hosted on ...
2
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1answer
241 views

SSH tunnelling outgoing traffic shaping

I am using an OpenSSH server for a client app that uses the traffic forwarding, SSH tunnelling and some users are consuming an extraordinary amount of bandwidth. Is there a way to shape the traffic on ...
2
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1answer
621 views

Creating a linux user with limited privileges for ssh tunnelling

I am following this post to create ssh tunnel to mysql. The details description of my application scenario is given in my other SOQ. I exactly followed these steps to create a user: useradd -s /bin/...
2
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1answer
457 views

How to restrict an SSH tunnel to a certain outbound IP address on an SSH server?

I hope I'm phrasing this question correctly. I have a SSH server that I use for testing that has 2 internet connections running on it. The LAN connection is always on, but the USB connection is on ...
2
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1answer
352 views

What are the key differences between “SSH tunnels” and “Squid reverse IPs” in regards to web page scraping and private browsing?

What are the key differences between "SSH tunnels" and "Squid reverse IPs" in regards to web page scraping and private browsing? Interested to know if there are any differences between using "SSH ...
2
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1answer
710 views

Double SSH tunnelling for SMB shared folder

I am actually working from PC1 (using Mac OSX) on a distant computer(Linux) PC2 using SSH. This distant computer PC2 does not have any connection to Internet but is in a network with a PC3 (Windows ...
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0answers
46 views

Schedule on boot persistent reverse SSH tunnel on Mac OSX

In attempts to run a self sustaining reverse ssh tunnel I have tried installing the 'autossh' package with brew. Autossh works alone when ran through the user's prompt, but not with launchctl/launchd. ...
2
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2answers
82 views

ssh reverse tunnel with remote ip

From a server 192.168.0.1, I'd like to reach a server 192.168.0.2 on port 80. 192.168.0.2 can reach 192.168.0.1, but 192.168.0.1 can't reach 192.168.0.2 (firewall). I have set up a reverse proxy, by ...
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48 views

SSH - Unable to access local forward from another host

I have a VPS with 2 public IPs (assume 1.1.1.1 and 1.1.1.2) I am trying to do a local tunnel to my router on my VPS bound to the second IP, and then access it via another machine. I do the following -...
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0answers
205 views

named pipe proxy over SSH

I am used to forwarding a remote service port on localhost using ssh like: ssh -L 2181:localhost:2182 user@server (forward remote host port 2182 to local port 2181) now, from the machine I ssh to, I ...
2
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1answer
85 views

In bash, how can I use a here document but then open stdin?

My example is that I'm tunneling through a server and want to create a command to type in a password but leave stdin open once that's done. For example I need to sudo to a different user everytime I ...
2
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2answers
88 views

Openssh server: fatal: Too many listen sockets. Enlarge MAX_LISTEN_SOCKS [closed]

I am using Ubuntu 14.04 LTS. I want to create an openssh server, which listens on many ports (at least 100 different ports). Multiple clients would connect to this server, but each client would need ...
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0answers
69 views

user@localhost password not accepted when ssh-ing through a tunnel [closed]

I am trying to log into a workstation through another server, following this guide http://serverfault.com/questions/53080/how-to-enable-ssh-x11-forwarding-through-additional-server Step 1, connecting ...
2
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1answer
1k views

Why SSH login works in shell but fails in all third parties via ssh tunnel?

I'm using ssh to log in (prompt password first time) on a remote server. In shell, using this command: ssh root@myserver.com works well! But all other db software applications that I tested (...
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0answers
250 views

Tunnel audio chat over ssh

I'm running a HelpDesk for internal call center employees. Right now, we can chat with employees over our web portal and remote-control their Linux Mint workstations via VNC over a secure SSH tunnel. ...
2
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1answer
2k views

ssh tunneling: connection closed by foreign host

I'm trying to create a scenario to test a simple ssh tunneling, just for using a simple telnet. I have two hosts: ubuntu and suse. Both of them have the other hostname on /etc/hosts file for address ...
2
votes
1answer
353 views

Port forwarding for VPN connection

I'm using a public wifi hotspot. Usually when I connect to these, I immediately connect to my college VPN. On this hotspot, only browsing works (no program other than a browser seems to be able to ...
2
votes
1answer
57 views

Programatically / dynamically adjust SSH session port forwards

I have a workflow where I am trying to do the following: For a given existing SSH session, access the remote machinne and perform a process from which a port is returned (e.g. a remote daemon has ...
2
votes
1answer
491 views

SSH over corkscrew and proxy get “ssh_exchange_identification” error

until few days ago I was able to connect to my remote ssh server, using corkscrew to tunnel the connection through the corporate proxy, with this simple configuration: ssh -v root@xxx.xxx.xxx.xxx -p ...
2
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1answer
417 views

SSH fork kills connection

I am using a linux script which has the task of forwarding control of the system to remote support. In this script one of the commands is a ssh port forward command that will forward the port of the ...
2
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0answers
429 views

iptables rule to transfer UDP through a SSH tunnel

The problem I have two programs that runs on two distant computers and communicate through a specific protocol. All I know is that this protocol only communicates through UDP and uses the ports 1101 ...
2
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1answer
217 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> /home/...
2
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1answer
536 views

use SSH tunnel to baypass Captive portal

I know that DNS tunneling is the good choice when we try to bypass captive portal, but i tried to do SSH tunneling instead of DNS but it doesn't works, technically speaking is that possible -bypass ...
2
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2answers
538 views

Unable to force passphraseless ssh authentication while port forwarding

I'm completely at a loss as to what is preventing my local machine from authenticating the connection that is being forwarded from the remote server. I've read a ton of the posts on here regarding ...
2
votes
2answers
561 views

How do I route a spare network interface through an SSH tunnel?

I just bought a Raspberry Pi and I am wanting to route an ad hoc wireless network interface fully through an SSH tunnel that was created using another wireless interface. I want to do this so that I ...
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2answers
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SSH tunnelling explained in layman's terms

I've just used this guide to create a SSH tunnel to bypass my corporate proxy. I didn't use the usual "Putty", but in "MobaXterm" (a program similar to putty that also offers unix tools) I wrote, to ...