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

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15 views

Access web service behind jump host via ssh tunnel

I have created a web service running on protected server(Centos, 123.123.123.123:8192), we can only login to the web server via SSH from a jump server (say 111.111.111.111). I can login the web server ...
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0answers
16 views

Connecting to VPN does not work for all websites [on hold]

Via a corporate VPN (connected via Ike client) I setup a dynamic ssh tunnel to machinea on localhost:9988, which I can use when connecting via a shared wifi network A to visit any website via a ...
2
votes
1answer
35 views

Tunneling cassandra via ssh gives me a connection closed error

I have a server with two network interfaces. Cassandra is listening on a dedicated internal database network on eth1 (not accessable from outside). So I do my tunnel like this: ssh -f -N ...
0
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1answer
20 views

mysql tunnel restrict server login

We currently only allow external mysql access by using ssh tunnels (with a variety of read only/write/admin users) with each end-user having a different user login on the server. Is it possible to ...
1
vote
1answer
936 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: ...
0
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0answers
500 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 ...
0
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0answers
6 views

terminate tunnel with Cisco 1905

We have a Cisco 1905 router and I was wondering, if there is an option to terminate an ssh tunnel on it, i.e. that some external host would be able to establish a secure connection through a ssh ...
2
votes
4answers
2k 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 ...
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2answers
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 ...
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1answer
26 views

Remote port forwarding not working

I have a test app I run locally, and use remote port forwarding to give others access to it. This was working just fine, until I set up a new server instance on EC2. The EC2 server runs CentoOS 7. ...
0
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1answer
20 views

ssh tunneling on the same machine

I am pretty lost with that. I have a machine with multiple adaptors, wlan0, eth0 and vpn_tun10. I want to set a tunnel on this machine to listen to request on the port 1080 and route them to the same ...
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5answers
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 ...
0
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1answer
53 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 ...
1
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1answer
376 views

Mysql through ssh often can't connect or timeout

I have a MariaDB server (10.0.12) on a machine (Ubuntu 14.04) that other servers connect to through ssh for security purpose. The ssh tunnel is openned via autossh like so: autossh -M 3306 -f -Ng ...
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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
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1answer
36 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
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1answer
21 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
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1answer
44 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 ...
1
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1answer
60 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 ...
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2answers
75 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
40 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
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1answer
37 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 ...
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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 ...
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0answers
57 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 ...
2
votes
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
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1answer
62 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 ...
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 ...
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1answer
866 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
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2answers
187 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
14k 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
261 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 ...
17
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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
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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
335 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
581 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 ...
4
votes
1answer
5k 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 ...
1
vote
1answer
46 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
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0answers
34 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
130 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
75 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
53 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
603 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
113 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
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2answers
673 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
345 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
572 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 ...
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2answers
1k 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 ...