An SSH tunnel leverages the SSH protocol to transport unencrypted data through an encrypted connection.

learn more… | top users | synonyms

0
votes
0answers
16 views

slow internet access when routing via a server (both using iptables NAT and ssh tunnelling) [migrated]

I have a spare computer powered by a dual core intel atom N550 CPU and 2GB RAM (I will refer this as "the server"). It is running lubuntu 14.10 x86 (32 bit) with lightdm service disabled (hence, no ...
0
votes
1answer
21 views

I set up a web application server, and a separate server for postgres on the same network. How should I secure the connection?

I'm trying to determine the best, modern practice for using your own separate database server for a web-app. I have an app server, appserver1, (running php, nginx, etc, not that that matters much), ...
6
votes
1answer
3k views

Can I configure VSFTPD to listen only to localhost?

I have a legacy app that needs FTP and cannot do SFTP. My solution is: put an FTP server in place using VSFTPD configure the firewall to accept port 21 connections only from localhost Set up an SSH ...
1
vote
1answer
890 views

Connecting jconsole using SOCKS to Amazon EC2

I'm trying to use jconsole to view stats on an EC2 instance by using a socks proxy created by SSH. I've tried the various scripts mentioned in the links below but to no avail: ...
1
vote
1answer
20 views

Two factor athentication on SSH server without root privileges

I want to set up two factor authentication on a server, on witch I don't have administrative account. The purpose of this is: I want to give some other people possibility to create SSH tunnels to this ...
0
votes
1answer
19 views

squid3 FAIL with cache_peer round-robin on 127.0.0.1 different port

I have 3 tunnels end to a Debian running squid3 (ports 9001 to 9003). At start of each tunnel runs a proxy. I try to load-balance those proxies this way: http_access allow all http_port 4128 ...
0
votes
0answers
18 views

SSH socks proxy reverse connection Connection denied

So I wrote a java app that connects to a server in a reverse way (-R) and creates a ssh server where it is executed so the server can execute commands in the client that executed my app. That part ...
0
votes
1answer
1k views

X11 forwarding over ssh applications very slow to start

I have a server that is extremely slow (takes 3-5 minutes) at starting X11 applications over a forwarded X11 link. I have tried connecting to it with 2-3 different machines with different operating ...
1
vote
1answer
48 views

SSH from Windows to Jump Server to MySQL [closed]

We have a MySQL instance running on a Linux machine and had to open a tunnel to access the server. This worked fine until admin decided to add a steppingstone / jump server. Now i can't seem to ...
-1
votes
2answers
55 views

“Cannot open SSH Tunnel” on MySQL (corrected)

(help, patience and mercy... begginer lost haha) -Ok heres the deal, im trying to connect a EC2 Instance to MySQL throught SSH in MySQL Worckbrench -I set up the configurations this way SSH ...
2
votes
1answer
33 views

SSH Remote Forwarding with two hops

How can I make ports forwarded or proxied by ssh available to machines other than the local machine? e.g. machine A connecting to machine B (works) ssh -L8080:some-service:8080 user@machine-B ...
0
votes
1answer
31 views

Access a remotely inaccessible webapp through an accessible server [closed]

I need to access a locally developed webapp (port 80), which is for the time being inside a computer that cannot be accessed remotely: local machine (for ex. it's behind a firewall). So, what I ...
5
votes
4answers
4k views

SSH Tunnel for Remote Desktop via Intermediary Server Part II

I asked previously how to configure 2 SSH tunnels using an intermediary server in order to run Remote Desktop through them and I managed to make it work. Now, I'm trying to do the same, using the same ...
0
votes
0answers
47 views

Why ssh tunnel cannot create in the virtualbox or qemu with force mode (-f)?

I try on the dedicated server root@debian:~# strace -e open -f sshpass -p guest ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null guest@198.51.100.11 -C -N -D 127.0.0.1:22220 -f [pid ...
1
vote
1answer
5k views

how to connect to mongodb server via ssh tunnel

It was easy for me to connect to my remote mysql server on AWS using a sequelpro, however I'm struggling with doing the same thing with mongodb. I tried setting up an ssh tunnel via command line ...
0
votes
1answer
53 views

How to force an ssh tunnel (or a ProxyCommand) to use an existing master connection? [closed]

There are three machines A, B and C running linux. I have root access to machines A and B but not to C. A is my local machine and I want to connect to C. C is only reachable through ssh over VPN. I ...
0
votes
0answers
244 views

(reverse-) ssh connection “time out during banner exchange”

I have set up a few 100 embedded boxes to contact HQ by opening up reverse ssh tunnels, each under a new port. This is mostly working fine, but today I encountered a problem with using the tunnel ...
3
votes
1answer
4k views

How do I configure pfsense as an outbound VPN client?

We use pfsense as a router/firewall. Because we're based in China, it is useful for us to have VPN access for all our internal clients. Instead of each individual client connecting to a VPN server ...
0
votes
1answer
495 views

How to SSH to ec2 instance in VPC private subnet via NAT server

I have created a VPC in aws with a public subnet and a private subnet. The private subnet does not have direct access to external network. So, there is a NAT server in public subnet which forward all ...
0
votes
2answers
131 views

tunnel port 8080 over jumpserver using ssh - socks5 proxy?

I have this setup: LocalPC - Jumpserver - Webserver with page only accessible on this machine via localhost:8080 LocalPC and Webserver are not connected - Jumpserver has to be used. Jumpserver ...
5
votes
2answers
13k views

how to tunnel Windows Remote Desktop through ssh using a linux box?

I have two physical servers in my home network, linux (192.168.8.x) and windows server 2008 (192.168.8.y). The linux server ist accessible from outside by ssh on a non-standard port (say 23008). How ...
2
votes
1answer
2k views

SVN server with svn+ssh protocol over custom port

I am running Ubuntu 12.04.2 LTS as virtual machine and there is vShield also at the front with enabled firewall and some NAT modifications. There are also other machines in my VPS configuration, but ...
3
votes
2answers
177 views

Improving speed of large file transfer over high latency link

So, I've recently had the need to pull a large file over the internet from one of our offices overseas. Both offices have 50Mbit fibre links in both directions, but the round-trip-time is horrendous ...
2
votes
3answers
1k views

Command or Shell task hangs when using ssh to create a tunnel

I am using Ansible to push configuration. I have a task inside a playbook that I want to start an ssh tunnel in the background for MongoDB. The task command that i'm using is - name: Start tunnel ...
17
votes
9answers
13k views

How to set up disk cloning with dd, netcat and ssh tunnel?

I would like to copy stuff in bulk (reimage disk using dd) with netcat from host A to B via ssh encrypted channel on Linux. What commands should I type on both ends?
0
votes
1answer
33 views

SSH Tunneling and LAMP at same time

I am tunneling Firefox through SSH to a remote server using: ssh -D 9999 -C usr@remotehost.com This binds 9999 port on localhost. I set this up in Firefox proxy settings using Socks5. It works ...
7
votes
2answers
2k views

Connecting to MySQL securely - MySQL's SSL vs Stunnel vs SSH Tunneling

We have a PHP application which connects to a MySQL server, and we wish to secure connections between the web & application servers and the database. At peak times, the web servers make many ...
2
votes
3answers
240 views

make program installs via ssh tunelling on CentOs system

I have a Machine A with no access to internet. I have a Machine B with access to internet. A & B can connect to each other via ssh. I'd like to make some program installs on A (perl, R package ...
1
vote
1answer
564 views

How to set up a server for reverse SSH tunneling that can be used by multiple users?

Sorry for the wall of text, I'm a bit of a newbie but have exhausted my search resources. In order to establish a public IP for my local Django development server, I set up an AWS micro instance as a ...
3
votes
1answer
4k views

reverse-proxy web access on a server where only SSH is allowed

Every once in a while i have to connect to a server where access is highly restricted. Only inbound SSH is allowed by the DMZ firewall - outbound HTTP connections are blocked. I'm looking for a good ...
0
votes
1answer
43 views

how to access a private host through a public one

I have a number of AWS EC2 instances, one of them has a public IP address, the rest do not have public IP addresses. I have set up SSH access to the public machine using a private/public key pair. I ...
1
vote
0answers
33 views

Centralize way to prevent interactive logins

I have an Ubuntu server that is used for two primary purposes for my students: To hold on to files that students need to temporarily upload for my assessment (ie: I give them an input image, and ...
0
votes
1answer
122 views

ssh tunneling not working due to strict iptables

my iptables are set so that I can only allow ssh connections. I tried ssh tunneling and I can connect to my sever, but after when I try using my server as a proxy on firefox, pages try to load ...
0
votes
1answer
66 views

ssh multiplexing via port forwarding

I'm trying to create a setup where one could "ssh" to a specific port on localhost and then get forwarded to a remote server and into a shell, without the need to enter credentials (nope, secret key ...
0
votes
1answer
50 views

ssh tunnel through two-factor auth

I need to connect to server using SSH, and the server has two-factor authentication enabled and secretkey disabled. Now, I can connect "manually" form the shell with the help of Google authenticator ...
2
votes
2answers
557 views

Puppet over ssh tunnel

Hi I am trying to use puppet client/master to set up my servers. I have everything working perfectly on local VM's and now I'm trying to set up my first external server. However I can't get the client ...
0
votes
1answer
106 views

Site to site ssh tunnel

I have two virtual environment at different locations, and I want to set up site to site ssh tunnel for contact between those networks. I have configured the ssh tunnel on both sides with routes to ...
0
votes
2answers
637 views

Number of SSH connections rises, and blocks data?

We have a client server setup, where the client sets up an SSH tunnel and uses port forwarding to send data to the server: ssh -N -L 5000:localhost:5500 user@serveraddress The normal number of SSH ...
2
votes
1answer
257 views

Making proxy available on remote server through ssh tunneling

I know I can use ssh tunneling to create a "proxy" on my machine so that I can make all the traffic generated locally go through a remote server. Like this: $ ssh -D 12345 myuser@remote_ssh_server ...
2
votes
1answer
418 views

How to get the list of SSH tunnels connected with the username used?

The connection is established from Desktop(D) to Server(S) with ssh -D PORT username@Server. From the Server, the list of ssh users connected can be obtained with who, but the ssh tunnels are not ...
1
vote
4answers
1k views

SSH tunnels with multiple outbound IPs

I have a VPS with multiple IP addresses allocated to it (we can use debian, centos or ubuntu). I can ssh tunnel through the server using any of the IP addresses. However, any ssh tunnel I set up ...
1
vote
2answers
902 views

How do I resolve OpenSSH protocol mismatch? [closed]

I'm trying to get around a hospital firewall. I can SSH into my devbox on Port 443: ssh -L 8080:devbox:443 root@devbox -p 443 But I can't actually get the devbox to load in my browser. When I go ...
0
votes
1answer
69 views

Receiving incoming traffic without external IP and port forwarding

I have a virtual machine in the datacenter with an external IP. I can connect via SSH to this virtual machine from my desktop, but this virtual machine has no way of accessing any ports on my desktop. ...
7
votes
4answers
1k views

Reverse SSH tunnel: how can I send my port number to the server?

I have two machines, Client and Server. Client (who is behind a corporate firewall) opens a reverse SSH tunnel to Server, which has a publicly-accessible IP address, using this command: ssh -nNT ...
1
vote
3answers
1k views

MySQL access denied error when connecting via SSH tunnel

For months I've been connecting to the MySQL instance running on our local test server through an SSH tunnel without any issues. All of sudden though, with no changes I can think of, the server has ...
1
vote
0answers
85 views

Can My Company Block Websites Though An SSH Tunnel?

I am trying to tunnel through a firewall on a client site so that I can reach my company email. I have created an SSH Tunnel using putty by adding a Dynamic port (6666) in the Tunnels then logging ...
0
votes
0answers
28 views

SSH into EC2 instance through a “bridge” instance

I need to ssh into an EC2 instance which can only be accessed from another EC2 instance. So I've tried something like this ssh -N -L -i target_instance.pem localhost:22:ec2-user@10.0.0.1 -i ...
3
votes
4answers
946 views

SSH tunnel & Rsync thru two proxy/firewalls

Screnario: [internal_server_1]AA------AB[firewall_1]AC----+ 10.2.0.3-^ ^-10.2.0.2 | internet 10.3.0.3-v ...
5
votes
2answers
2k views

Running multiple services on Port 443, Tunnel SSH over HTTPS

Situation: I want to tunnel SSH sessions through HTTPS. I have a very restrictive firewall/proxy which only allows HTTP, FTP and HTTPS traffic. What works: Setting up a tunnel through the proxy to a ...
0
votes
2answers
188 views

SSH tunneling in background

I'm trying to tunnel my production mongo server to my test server, so, I can perform some tests. I know I can simply establish a tunnel by ssh -L, but I need to run this as a background process as I ...