Hi guys, I'm trying to set up an Ubuntu VPN server that will forward an ssh connection automatically as a proxy to two separate LAN hosts.
What I'm looking at doing is making SSH listen on two ports (if that is possible) and get some kind of script, preferably something in bash, that will listen on those two ports and forward the connection to whichever host in the event of a successful connection.
Eg:
P 22 >> Host 1
P 4000 >> Host 2
The two hosts are running red Hat linux and a Windows variant and will be accessed initially from both Linux and Windows machines.
I was looking at getting ssh to listen on the separate ports by editing the
to add for example, port 4000 underneath port 22 and restart the service.
At the minute I have it all running on Amazon ec2.
Hi,
I have issues with running graphical interfaces on my computer being remotely logged into a network via the -X option of ssh. My .cshrc shows DISPLAY=hostname:0 and I think there should be a different number instead of the 0. I changed the ssh_config file already to 'X11 forwarding yes', which... (0 Replies)
Hi,
from my workplace we use a proxy to connect to the outside world, including external ssh servers.
The problem is that the server is seeing the connection coming from the proxy and knows nothing about the client behind it. The ssh connection itself works fine, but x-forwarding does not work as... (1 Reply)
Hi Experts,
I am trying to have the SSH tunnel Remote forwarding command in a shell script. I should be able to do 2 tasks, but unable to get that going.
1) I have 3 servers Server 1, Server 2, Server 3.
I have my Database running on Server 1 and my script running on Server 2 which should... (0 Replies)
So this seems like something that should be simple...but I can't quite seem to get it up and running. I have a machine, .107 with a GUI on port 8443. The problem is that I can't connect directly to .107 from my laptop. Now I have another machine, .69 that can connect to .107. So shouldn't I be able... (4 Replies)
I have an application that runs on the server with root privileges and all emails it sends get sent to root (errors, logs, etc), when they should actually go to one of application admins.
I would like to separate these emails from the OS related one sent to root and forward them to that... (2 Replies)
Hi,
Local PC - Ubuntu 11.04 desktop
Remote PC - Debian 6.0 desktop
My problem is 2 desktops, remote and local, are displayed on the same workplace on local PC. It would be quite confusing. Is there any way to display each desktop on one workplace(on its own workplace) OR displaying both... (0 Replies)
Hello my friends , i am totally stuck in ssh port forwarding topic
i had learn iptables and other networking topic without any problem but ssh port forwarding is headache
1. local port = what is this ? is this incoming traffic or outgoing traffic
2. remote port = same as above
3. dynamic... (2 Replies)
Hi,
I'm trying to connect ftp over ssh port forwarding to a sever(UnixC) behind FireWall(F/W). here's my env and question.
UnixA(SSH Client) ----F/W ---- UnixB(SSH Svr) ---- UnixC (FTP, 21)
UnixA wants to connect ftp service of UnixC via SSH port forwarding on UnixB.
Unix A,... (3 Replies)
I have a few questions below on ports.
From my understanding ports are what allow information to come into your computer and each port interprets/allows specific information/data to come in. Is this correct from a ball park perspective? If not could some elaborate on this please.
What... (1 Reply)
Here's a situation:
I do all my work on a Mac. I have mysql installed on my mac.
1. There's a certain linux server 'server01' that provides access to
another linux server 'server02' via a pseudo terminal
So, to ssh into 'server02', I do this from my mac:
ssh -t server01... (1 Reply)
Discussion started by: imperialguy
1 Replies
LEARN ABOUT DEBIAN
sslh
SSLH(1p) User Contributed Perl Documentation SSLH(1p)NAME
sslh - Switch incoming connection between SSH and SSL/HTTPS servers
SYNOPSIS
sslh [ -v ] [ -p [host:]port ] [ -t timeout ]
[ --ssh [host:]port ] [ --ssl [host:]port ]
DESCRIPTION
sslh is a simple script that lets you switch an incoming connection on a single port between distinct SSH and SSL/HTTPS servers.
sslh listens for connections on a port and is able to redirect them either to an HTTPS web server or a SSH server.
This lets one setup both a HTTPS web server and a SSH server and access them through the same host+port.
OPTIONS
The program follows the usual GNU command line syntax, with long options starting with two dashes.
-p, --port [host:]port
The port the proxy will listen to. If no port is given, 443 is used by default. If no host is given, "localhost" is used by default.
-s, --ssh [host:]port
The SSH server which the SSH connections must be forwarded to. If omitted, the default is localhost:22.
-l, --ssl, --https [host:]port
The HTTPS server which the HTTPS connections must be forwarded to. If omitted, the default is localhost:443.
-t, --timeout delay
Timeout in seconds before a silent incoming connection is considered as a SSH connection. The number can be fractional.
The default is 2seconds.
-v, --verbose
Verbose output. This option can be used several times for more verbose output.
EXAMPLE OF USE
Is this tool actually useful? Yes.
For example one can use it to access both a SSH server and a secure web server via a corporate proxy that only accepts to relay connections
to port 443. Creating a tunnel that passes SSH connection through a CONNECT-enabled web proxy is easy with connect-tunnel (also included in
the "Net::Proxy" distribution).
The proxy will let both SSH and HTTPS connections out (since they all point to port 443), and the home server will connect those incoming
connections to the appropriate server. This only requires to run the HTTPS server on a non standard port (not 443).
TECHNICAL NOTE
How can this proxy find out what kind of protocol is using a TCP connection to port 443, without being connected (yet) to the server? We
actually rely on a slight difference between the SSL and SSH protocols (found thanks to ethereal):
SSH Once the TCP connection is established, the server speaks first, presenting itself by saying something like:
SSH-2.0-OpenSSH_3.6.1p2 Debian 1:3.6.1p2-1
SSL With SSL, it's always the client that speaks first.
This means that sslh can be used with any pair of protocols/services that share this property (the client speaks first for one and the
server speaks first for the other).
AUTHORS
Original idea and C version
Frederic Ple "<sslh@wattoo.org>".
Perl versions
Philippe 'BooK' Bruhat "<book@cpan.org>".
SCRIPT HISTORY
Version 0.01 of the script was a quick hack designed in 2003 as a proof of concept.
Version 0.02 (and higher) are based on "Net::Proxy", and included with the "Net::Proxy" distribution. Version 0.02 didn't work, though.
Version 0.03 correctly initialised the "in" connector.
Version 0.04 lets the proxy listen on any address (instead of "localhost", which is still the default). Thanks to Dieter Voegtli for
spotting this.
SEE ALSO
Net::Proxy, Net::Proxy::Connector::dual.
COPYRIGHT
Copyright 2003-2006, Philippe Bruhat. All rights reserved.
LICENSE
This module is free software; you can redistribute it or modify it under the same terms as Perl itself.
perl v5.10.1 2009-10-18 SSLH(1p)