1
vote
2answers
24 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
24 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. ...
0
votes
0answers
23 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 ...
0
votes
1answer
49 views

setup ssh a special kind of ssh tunnel

Ok so I have run into a pickle. I have a web application that I really need to demo this weekend. I can't demo it unless my sysadmin (who is off work) takes down client SSL authentication. There is ...
0
votes
2answers
133 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 ...
0
votes
1answer
49 views

SSH connection timing out on certain clients only

I have a server that has around 100 SSH tunnel connections active from client servers across Canada and the US. We use the same device that runs a custom build of Ubuntu and load that on each client ...
0
votes
3answers
77 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 ...
0
votes
1answer
57 views

SSH Tunnel - Proxy Not Working From Remote Location (Login is working)

I have just set up a Cygwin SSH server and successfully tunneled to it from a remote location. Logging in works but when I point my browser to localhost 8888 (sock 5), all connections are refused. ...
0
votes
0answers
26 views

SMB reverse port forward fails to connect

I have a rather complex server setup consisting of a reverse SSH tunnel through a Linux VPS. Namely, server A is a Mac Mini and runs a script which reverse tunnels to the VPS, which we'll call B. ...
0
votes
0answers
95 views

Multiple Reverse SSH Tunnels using Single Port

I am able to accept reverse SSH connections from multiple remote systems on a single server using a port for each connection: Remote A: ssh -fN -R5000:localhost:22 user@server-ip -p22 Remote B: ssh ...
0
votes
1answer
36 views

Cannot remote copy file via tunnel [closed]

I'm trying to get a file from server1 (localhost) with scp. I am accessing server1 from the gateway server2 (that is the only one accessible from the internet). I am able to open a ssh connection by ...
0
votes
1answer
66 views

Control outgoing interface linux SSH tunnel [duplicate]

I am using a simple socks proxy in my browser. I create the socks using ssh -D myremote.server Now all requests go via the primary IP address of myremote.server. Can I change this behaviour that ...
0
votes
2answers
59 views

SSH connection falling down

I've set up a connection with autossh that creates some tunnels at system startup, but if I try to connect, after successful login (with RSA key) connection fall down, here a trace: debug1: ...
0
votes
0answers
88 views

SSH Fails to Disconnect after Interruption

I have a set of issues, all combining to make for one nasty problem. The background: I have a server behind a firewall reverse tunneling using an external VPS (we'll call the server "the server" and ...
1
vote
1answer
1k 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 ...
1
vote
4answers
740 views

SSH remote port forwarding failed

Follow-Up: It looks like the rapid series of disconnects coinciding with a few months of running each server is probably coincidental and just served to reveal the actual problem. The reason it ...
1
vote
1answer
58 views

restrict shell commands for munin-node (netcat)

I've spent fair amount of day fiddling with this, and I'm about to give up (for today). I followed the instructions outlined here. All works at the moment. But to increase security I'd like to ...
0
votes
1answer
265 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 ...
1
vote
1answer
83 views

Using a reverse tunnel to access a firewall-ed web server serving HTTPS

I have a device ("A) on my network that only serves content via HTTPS, it's not accessible as its behind my router/firewall. I have another machine ("B"), elsewhere on the internet (fake IP of ...
-1
votes
1answer
67 views

SSH through another machine at work to an external server [duplicate]

I'm fairly sure this will have been asked before, I have found similar questions but I do not fully understand how to apply them to my situation. So, sorry for asking again. We have a number of ...
0
votes
2answers
133 views

HTTPS SSH Tunnel

Ok so I have a web server, lets call it Server A, which is providing a service via HTTPS. And I have an SSH gateway server, lets call it Server B. Due to firewall rules I cannot access Server A's web ...
3
votes
1answer
161 views

How to make ssh fail if port forwarding fails

I have a bash script that runs ssh to create a port forward, using a command like this: ssh -N -i keyfile -L 1000:localhost:22 *remote_ip* There are occasions where the listen port may be busy, so ...
1
vote
2answers
154 views

SSH Tunnel or Reverse Tunnel

I'm trying to establish a SSH tunnel to allow VNC/ARD connections (ports 5900 and 3389). However I'm uncertain about a certain thing: Let's say machine A has IP 192.168.103.1 and has services running ...
-2
votes
1answer
644 views

Impossible to connect ssh /root/.ssh/known_hosts': No such file or directory

I can't connect to my server with ssh. I have already started a session with ssh but i know if i quit this session, i won't be able to connect again to my server. ssh root@genese.com ...
0
votes
0answers
81 views

Establish an SSH Tunnel out from behind a firewall

I have a box sat behind a firewall, and when its powered on (or internet connection resumed), I want it to connect to a server, allowing me to do a reverse SSH connection back to it. I'm currently ...
0
votes
0answers
86 views

Write failed: Broken pipe even if I use ServerAliveInterval?

This is my ~/.ssh/config file - Host 10.2.1.1 ServerAliveInterval 120 ProxyCommand ssh 10.1.1.1 nc -w1 10.2.1.1 22 I've configured it so that I can bypass the jump server each time I need to ssh ...
0
votes
1answer
79 views

Reverse SSH Tunnel Failing - Looking for Debug Advice

I have a Mac OS X server (referred to as the internal server behind a firewall that is reverse port forwarding via ssh -gnN -R *:remoteport:localhost:localport root@remote.server where remote.server ...
0
votes
1answer
802 views

Tunnel windows VPN through SSH

Ok here is my issue... I want to connect to a VPN via pptp on Windows XP however it is behind a firewall that I have no control over. I am able to make SSH connections. I wish to VPN to a server I ...
-1
votes
1answer
50 views

Prevent SSH Session Eavesdropping through a Bounce Host

In order to access a Linux host through a firewall/NAT I am required to use an SSH "bounce host". I am concerned with the possibility that this bounce host may be logging my SSH session. In a test ...
0
votes
0answers
48 views

SSH Tunnel not working, but not able to find the point of failure as it worked previously

I am having an odd issue wherein suddenly port forwarding stopped working in a particular scenario for me. By default I need a particular port forwarded on all servers I manage and so I have the ...
3
votes
1answer
262 views

cannot connect to mysql on AWS through ssh tunnel

I'm trying to break down the task of doing AWS debugging on rubymine into smaller chunks. I would like to connect to the mysql server running on AWS. So I did the following: first: Establish an ssh ...
5
votes
3answers
548 views

Copy data through SSH tunnel over multiple hops

We have two main environments in question: Development and QA Each environment has two servers: Jump Box Application server In order to connect to the application server, you must connect to the ...
0
votes
0answers
88 views

Forward SOCKS proxy through 2 SSH Reverse Tunnels

I'm attempting to connect to one network's internet connection from another network, kinda a VPN but unfortunately is not possible. I can't have the ports open for any of the 2 networks for port 22 ...
1
vote
2answers
309 views

How to configure ssh tunneling with Putty between two RHEL servers?

I'm trying to allow ssh access from a remote RHEL server to a local RHEL box via Win/Putty gateway. Basically, I'd like to be able to do 'ssh localhost -p 512' on a remote server so that it would ...
0
votes
1answer
230 views

Enable Cisco ASA as an SSH Tunneling

I am trying to utilize my Cisco ASA as a SSH Tunnel. I've configured this before when using a Linux server as the SSH target, however I cannot seem to get it to work with the ASA. I have configured ...
1
vote
2answers
83 views

SSH connection times out unless I tunnel in from a different server-

OK, so this just started last week - Whenever we try to connect to our server via ssh (we use sftp, as well) - The connection times out. However, when you ssh to any other server and then ssh ...
-1
votes
6answers
866 views

Total newb having SSH tunnel and remote MySQL access problems [closed]

I don't often work with linux or need to SSH tunnel into remote MySQL databases, so pardon my ignorance. I'm using Windows 7 and am needing to connect to a remote MySQL instance on a Linux server. ...
1
vote
1answer
77 views

Create tunnel from PC1 to PC2 allowing PC2 to then connect back to PC1 via SSH without Port Forwarding

I'm looking to offer a Linux remote support service, to PC's which are mostly behind home NAT routers which don't have any ports forwarded. I want to be able to connect to those PC's by SSH upon ...
2
votes
1answer
215 views

How does ssh ProxyCommand actually work?

I am comfortable with using the ProxyCommand feature of ssh and can use it to hop through mulitple bastion hosts to reach the final host efficiently. But I just can't seem to understand how it ...
0
votes
0answers
86 views

Benefits of using Squid over SSH vs a dynamic SSH tunnel

Recently someone at my place of work set up Squid for convenience so that a bunch of us can use it if we want. Since it's not publicly accessible we'd need to SSH to the server and set up a tunnel. ...
1
vote
1answer
1k views

Lost connection to MySQL server at 'waiting for initial communication packet', system error: 2

I've just spun up a new RackSpace VPS using Ubuntu. I'm normally using CentOS so forgive me for any Ubuntu newbie mistakes. I set up an SSH tunnel using Putty and tried to connect via SQLYog, ...
-3
votes
1answer
59 views

Can I use SSH tunnel to get around firewall? [closed]

I want to ssh to Server-A which only accepts connections on port 1234. This port is blocked on my current network's firewall. Server-B however, accepts ssh connections on standard port 22, and is ...
2
votes
2answers
232 views

Persistent reverse SSH tunnels

We have a number of servers (currently in the 10s, soon the low 100s) deployed to varying institutions with varying network layouts. To make sure that we can access the servers at will we have them ...
1
vote
1answer
157 views

Prevent user access to console but still allow svn+ssh:// access to SVN repos

I create an user john on my server and I add him into the SVN group so we can share our code and everything looks okay. Now I want to prevent this user from connecting to the console or shell via SSH. ...
0
votes
1answer
209 views

SSH Tunnel or OpenVPN to securely connect app and database servers?

I have my app (a PHP forum) and database on separate servers, and want to make sure that the connection between them is secure. I've taken all the preliminary steps that I've come to know of, and am ...
-1
votes
1answer
46 views

Using ssh tunnel to RDP into internal network [closed]

I'm a newbie to tunneling and can't figure this one out. I have an externally available computer, let's call it example.com, which is Unix. In its internal network there is a Windows machine I want ...
1
vote
1answer
132 views

Using SSH Tunneling to access website behind firewall [closed]

I hope someone can point out what I'm doing wrong. I've drawn the following picture to illustrate what I'm trying to do. Basically, I'm trying to access a website that is hosted on a server that is ...
-1
votes
2answers
42 views

How do I use ssh forwarding? [closed]

I have a Linux server which only opens two ports for public: remote-server-ip : 1111 remote-server-ip : 2222 We have a web application in the server which use 3333 port and can't be changed. So, ...
0
votes
2answers
3k views

autossh in background does not work

I have set up a tunnel via autossh. This works: autossh -M 33201 -N -i myIdFile -R 33101:localhost:22 autossh@myhost.com I would like to run autossh in background. Seems easy using the -f option. ...
0
votes
1answer
219 views

SSH-Connection through gateway nc not working

I have the following problem: I want to connect from a Windows 7 client to a remote Debian 7 Server via an SSH Gateway running on a SLES 11.3 Server. To test the connection I use plink with the ...