I have a few VPN servers and I find it quite tedious to create several configurations for each server.
In a perfect world I'd love to do something like this:
pptp 168.24.15.65 username password
And that would connect me right away, is this doable?
pppd pty "pptp SERVER --nolaunchpppd" file /etc/ppp/options.pptp user USER password PASSWORD
require-mppe-128 option (could be enabled in options.pptp) is often needed for windows servers.
After connection usually configuration of routing is needed. Something like this:
ip route add 10/8 dev ppp0
Related
I have a client who is remote. I need to debug some weird problem that none of my other clients are having. Before I try and set up a conference with this client, I would like to know if there is some way of remotely debugging our application.
I see that there are remote debugging tools available for Visual Studio, but from what I've read, I need to be on the same subnet. As the person is remote, this is not a possibility. Also, as I'd like to keep our connection secure, I would need to connect up some sort of encrypted tunnel (this is where I'm a little fuzzy as my networking skills are mostly theoretical).
As I understand it, an encrypted tunnel is a bridge to another (different) subnet. This is to ensure that those computers on the other side won't interfere with the local subnet computers.
So, because the client's computer is on a different subnet, I think that this is not possible. Or is it? Should there not be a way of making the client's computer show up as a virtual computer on my subnet, by forwarding packets from one subnet to another? I would think that this is theoretically possible, but I'm not exactly sure how I would go about this.
Also, at the moment, my current way that we connect to clients is through GoToMeeting, but I don't think that it supports tunneling. If not, then I may need some way of generating a tunnel, so I was also thinking of maybe using some SSH programme like PuTTY.
As I have said before, my knowledge of networking is quite theoretical, so if the tools that I am suggesting are not the correct ones, please correct me. (I'm a programmer, damm it! Not a network engineer!)
Both computers are Windows boxes. Windows 10 (client) and Windows 8.1 (development).
If you can connect to an ssh server in the remote network, you can (subject to configuration on the server) create a tunnel such that you connect to a socket on your local pic and the connection appears from the server to an endpoint on the remote network.
You'll want to investigate the -L command of OpenSSH, which combined with the PuTTY docs, should help explain what's required.
By default, the endpoint would be a port on the ssh server, but it could be a port on a different host that the remote server can connect to.
I'm not familiar with the current state of Windows SSH servers, but even if there isn't a system server to hand, you should be able to have on run 'on demand' - if you run it on a non-privileged port and by the user you want to connect in as, it shouldn't even need Admin privileges.
I'm not familiar with GoToMeeting, but the one thing with SSH tunnelling it that IT depts should be familiar with SSH. If trying that, focus on getting a working connection in, then setting up the tunnel, then connecting through it as separate steps.
Once you have an SSH connection, then it doesn't need to do something itself, and you can then investigate connecting while specifying the port forwarding, but will will need to get the basic connection working correctly first.
I am attempting to Bind my Mac to a University AD server through an SSH tunnel. I have successfully created the tunnel and can access the directory by ldapsearch using the address localhost:389
The problem is that I wish to bind the computer through either the Directory Utility or dsconfigad but I get an error:
dsconfigad: Authentication server could not be contacted. (5200)
Could it be because I need to port forward more ports than just 389? or would it be a limitation put in place by the Directory Admins?
Active Directory is far more than LDAP - at the very least you'd need Kerberos, but it also tightly integrates with DNS (both SRV and A records), which'd require significant trickiness to fake over an SSL connection.
Realistically, I think you're going to need (at least) a full VPN connection to do this.
There is a server in my company and many people in the company work on it by Putty. We installed the Putty for our own computers to remote the server. BUT all of these happened in the company's inner web.
Now I want to remote the server from outer web. For example, I am home and I work on the company's server. For now I dont know how to realize this.
How can I configure the server and my PC at home?
Need I make some configuration for the router of the company? How?
Thanks in advance.
Assuming your company has a competent IT staff, there is a firewall that blocks incoming SSH attempts out. (It is called SSH, not Putty. Putty is just a program that Windows users tend to use for SSH.) Inside the company's network, you can SSH. So, from home, you will hit a firewall and you can't SSH in.
Does your company have a VPN system? If so, use that. There are many forms of VPN. Your company's IT staff can tell you how to configure your home machine so it can connect to the company's VPN. Once it does that, it will be as though your home computer is inside the company. You are inside the firewall. You can SSH.
You can ask if they will open the firewall for you. They shouldn't, but you can ask.
If you don't have VPN, all is not lost, but it gets more difficult. I don't expect you to do this, so I will only list the steps.
Install an SSH server on your home computer. Get it up and running. SSH into it from another computer at home.
Forward incoming port 22 requests to your home's firewall/router to your home computer so you can SSH into your home machine from outside your house, ie: From work. Test it from work to ensure it works.
Set up a reverse port forward SSH connection from the server at work to your home computer. What this does is initiate an SSH connection from the work server to your home computer. It then listens on a port on your home computer (pretend you used 2222 as the port). Now, from home, you SSH to your home computer (localhost) on 2222 and it connects over the previously made connection to the server at work.
Your IT staff might notice that you did this. They probably won't like it because you are bypassing their firewall.
You can either forward the port of the server to the public internet, or you can set up a VPN located inside your company's LAN that can be reached from outside the LAN such as OpenVPN.
Note: If you are planning to forward the server directly, make sure the server's security settings are set up correctly to prevent misuse of attackers. You can also restrict access to specific IP addresses using a firewall.
Assuming that your server is behind corporate network, you MUST require a VPN connection to access it. Talk to your IT department and they will be able to help with setting VPN connection.
I've got a django project on heroku and it uses postgre database on heroku (ec2). It all works fine, but on one computer I don't have access to postger port 5432 so I need to setup a tunnel from my computer to there. Is that possible?
You will need to have some sort of access to an intermediate host to make it possible. Heroku does not support it out of the box.
Corkscrew does SSH over HTTP proxy. Then you can open a transparent proxy like tsocks. This way you don't necessarily have to know about the firewall.
This all applies to Linux and possibly Mac. On Windows you can pipe your connection through Putty.
A client has a web server that can only be accessed when on their network.
For example sake, let's say my login details are:
Server: example.com
User: user
password: password
for when I am on their company's internet. I use either Cyberduck or FileZilla to connect to their web server.
I'd much rather be able to connect remotely but I just have a lot of trouble setting this up. I have connected to the client's vpn, let's say vpn.example.com, and use Cisco AnyConnect to accomplish this.
Beyond this, my knowledge of VPN is limited. In an FTP client, is there anything I should be doing to ensure that it uses the VPN to connect to example.com rather than my home connection?
Thanks.
-m
There two ways around this. I am assuming you are using Windows or a Mac since the AnyConnect client doesn't come in a Linux flavor.
Open a CMD/Terminal and type "route print" or "netstat -r" take note of where example.com is pointing to. Most likely the default route will catch it. In that case you want to add a route to have it go via the VPN interface for any traffic that goes to example.com (After doing this, once you disconnect from the VPN you will not be able to connect to example.com any more unless you connect to the VPN.)
The other way is to connect to the FTP using the local IP of the FTP once connected to the VPN.
As there is no Linux solution I will post my solution. I don't know much about the other side (vpn server side), so this solution might not fit your environment.
I'm using vpnc (installable via package manager on Ubuntu, other systems might work too). You can configure it with a .conf file, my values are
IPSec gateway <server address>
IPSec ID <gateway id>
IPSec secret <kind of group password>
Xauth username <your username>
Xauth password <you password>
If you are using UBUNTU
Install Open client for Cisco AnyConnect VPN from Ubuntu Software center, then use openconnect command.