I currently have a private VPC with an OpenVPN server on an EC2 within it. Clients connect to the OVPN server and I can ping the connected clients via the server. Now I'd like to setup an ALB/ELB that would allow access to the clients on the OVPN server. Is that possible, I think I need a bridge?
I was thinking about perhaps installing nginx on the OVPN server and reverse proxying to the clients, but I feel like there's a more AWS way of going about this.
Thanks in advance!
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I have hosted my application in a CloudRun Container and connected it to CloudSQL.
Everything is in a VPC Network and is running smoothly. Now I would like to modify data in production from a Database tool like DataGrid. Therefore I need to connect my local environment to my VPC-Network. I did this through a Cloud VPN Tunnel. Now I would like to connect to the SQL instance.
Here I got stuck and I'm wondering how I can establish the connection.
It would be great if someone would know how I can solve this issue. Thanks!
My preferred solution is to use the public IP BUT without whitelisting any network. In fact, it's like if y ou have a public IP and all the connexion are forbidden.
The solution here is to use Cloud SQL proxy and to open a tunnel from your computer to the Cloud SQL database (that you reach on the public IP, but the tunnel is secured); It's exactly like a VPN connexion: a secure tunnel.
You can do this
Download Cloud SQL prowy
Launch it
./cloud_sql_proxy -instances=<INSTANCE_CONNECTION_NAME>=tcp:3306
Connect your SQL client on localhost:3306
If the port 3306 is already in use, feel free to use another one
If you prefer the private IP only (sometime, it's security team requirement), I wrote an article on this.
If you use a VPN (and you are connected to Cloud VPN) take care to open the correct route and firewalls in both way (in and out)
We have a very difficult problem here, we have a Windows Server 2019 Base x64 on Amazon EC2, connected through RDP and setup-ed forest and activated AD DS , also activated DNS. But whenever we try to connect we are not allowed to.
We have opened all the relevant ports on inbound traffic rules.
We have added users.
We have tried searching internet and various tutorials.
In Server Manager=:
Added the public ipv4 address to our ipv4 settings of the adapter.
Went to the computer setting in computer domain entered the domain but no fun.
Disabled the firewall in server manager.
We want to connect our clients on different network to connect to the server hosted else-where on AWS.
We are really new into this can some one guide through this?
Please make sure there is network connectivity between your client and you DC which is set up on EC-2 Instance.
[1] In case your clients are on AWS (meaning different EC-2 Instances), and in a different network, you need to create VPC peering or use Transit Gateway, so that it has proper network connectivity.
[2] In case your clients are not on AWS, and in an On-prem Environment, you need to have a VPN connection between your client and your DC.
So in Summary, you need to have network connectivity between your client and DC so that clients can join your Domain.
What do you mean whenever we try to connect we are not allowed to?
What are you trying to connect to, the Windows EC2 instance?
Are you saying that the instance is joined to AWS Directory Service domain but you can't connect to the instance using one of the users in your AWS directory?
Edit: This should have been a comment but couldn't post comments at the time of answering.
Hi there networking experts,
I have a Rails app hosted on Heroku, and I am looking to set up a VPN tunnel on a separate EC2 instance which will connect with a 3rd party.
3rd party <----(VPN tunnel)----> EC2 <----(HTTP/SSH)---> Heroku
Best case scenario would have been to set up the tunnel directly on our Heroku instance, but that doesn't seem possible according to some of these answers.
With my limited knowledge, I figured that the next best thing would be to set up a 'middle-man' EC2 instance with the capability to listen to the VPN tunnel as well as send HTTP requests to our Heroku server over SSH. The most important consideration in this integration would be security. I would like to encrypt end-to-end, and only decrypt on our Heroku server.
What would be the best practice for achieving something like this, if possible at all?
Thank you!
AWS has a managed VPN offering.
You configure a customer gateway for the client side, attach a virtual private gateway to your VPC, and the VPN connects the two. You can then set up routes which will allow them to connect securely to any services running inside your VPC.
A VPN in AWS can use static or dynamic routing. Static is generally simpler, especially if there is a limited IP range on the client side.
I have created a VPC with public and private subnets on AWS. All app servers are in private subnets and all outbound requests have to be through an internet-facing NAT instance.
At the moment, our project requires the app servers to access a ftp server provided by a service provider.
I have tried several ways to manage that, but all no luck. What I have done was to open a port range, let's say (40000 - 60000) on both NAT and APP security groups, also standard ftp ports 20 - 21 as well.
The user authentication can be passed, but I could not list contents from app servers.
I am able to access the ftp server from NAT, not problem at all.
So what should I do to make it work?
#JohnRotenstein is absolutely correct that you should use Passive FTP if you can. If, like me, you're stuck with a client who insists that you use Active FTP because their FTP site that they want you to connect to has been running since 1990 and changing it now is completely unreasonable, then read on.
AWS's NAT servers don't support a machine in a private subnet connecting using Active FTP. Full stop. If you ask me, it's a bug, but if you ask AWS support they say it's an unsupported feature.
The solution we finally came up with (and it works) is to:
Add an Elastic Network Interface (ENI) in a public subnet on to your EC2 instance in the private subnet
So now your EC2 instance has 2 network adapters, 2 internal IPs, etc.
Let's call this new ENI your "public ENI"
Attach a dedicated elastic IP to your new public ENI
Let's assume you get 54.54.54.54 and the new public ENI's internal IP address is 10.1.1.10
Add a route in your operating system's networking configuration to only use the new public ENI
In windows, the command will look like this, assuming the evil active ftp server you're trying to connect to is at 8.1.1.1:
route add 8.1.1.1 mask 255.255.255.254 10.1.1.1 metric 2
This adds a route for all traffic to the FTP server at 8.1.1.1 using subnet mask 255.255.255.254 (ie. this IP and only this IP) should go to the internet gateway 10.1.1.1 using ethernet adapter 2 (your second NIC)
Fed up yet? Yeah, me too, but now comes the hard part. The OS doesn't know it's public IP address for the public EIN. So you need to teach your FTP client to send the PORT command with the public IP. For example if using CURL, use the --ftp-port command like so:
curl -v --ftp-port 54.54.54.54 ftp://8.1.1.1 --user myusername:mypass
And voila! You can now connect to a nightmare active FTP site from an EC2 machine that is (almost entirely) in a private subnet.
Try using Passive (PASV) mode on FTP.
From Slacksite: Active FTP vs. Passive FTP, a Definitive Explanation:
In active mode FTP the client connects from a random unprivileged port (N > 1023) to the FTP server's command port, port 21. Then, the client starts listening to port N+1 and sends the FTP command PORT N+1 to the FTP server. The server will then connect back to the client's specified data port from its local data port, which is port 20.
Thus, the traffic is trying to communicate on an additional port that is not passed through the NAT. Passive mode, instead, creates an outbound connection, which will then be permitted through the NAT
Basically, my internal IP is masked by an external IP of my internet service provider. So, my internal IP can only be accessed inside my intranet. I want to let users outside the intranet to access my Dev server as well which is hosted on 0.0.0.0:8000 on my system. How do I do that?
Check out localtunnel on github, it does exactly what you're asking.
https://github.com/progrium/localtunnel
If you are willing to go that far you can use Reverse SSH Tunnel:
open a free micro linux instance on Amazon's AWS and create a reverse SSH tunnel to redirect port 80 on the server to your machine.
This is a cool solution for testing purposes and low traffic usage...
You can read more about it here:
http://www.techrepublic.com/article/setting-up-a-reverse-ssh-tunnel/5779944