How do I confirm that my VM connects to my GCP VPN Gateway? The two are already on the same network. I have tried pinging to the VPN Gateway IP from the vm but I cannot.
You would have to review and make sure that:
The VPN is active under Cloud VPN
Ensure that your GCP and on-prem firewall are allowing ingress/egress traffic between them
Depending on the type of VPN you choose, make sure that the IP address of the VM is shared to your on-prem via BPG, Route or Policy
If you see an issue with the VPN, you can review the VPN logs logs via logging (log viewer) and choose GCE Router. https://cloud.google.com/logging/docs/view/overview
If the issue is with the BGP/Route/Policy based, you would need to ensure your VPN IP is part of the shared range on both side (GCP and on-prem). https://cloud.google.com/network-connectivity/docs/vpn/concepts/overview#classic-vpn
If the issue is with Firewall, make sure that nothing is blocking your VM from communicating with your VPN IP range on GCP side and on your on-prem side. https://cloud.google.com/network-connectivity/docs/vpn/how-to/configuring-firewall-rules
Here is more troubleshooting you can review/try: https://cloud.google.com/network-connectivity/docs/vpn/support/troubleshooting
Related
Assuming I have a custom VPC with IP ranges 10.148.0.0/20
This custom VPC has firewall rules to allow-internal so the service inside those IP ranges can communicate to each other.
After the system grows I need to connect to some on-premises network by using Classic Cloud VPN, already create Cloud VPN (the on-premises side configuration already configured by someone) and the VPN Tunnel already established (with green checkmarks).
I also can ping to on-premises IP right now (let's say ping to 10.xxx.xxx.xxx where this is not GCP internal/private IP but on-premises private IP) using compute engine created on custom VPC network.
The problem is all the compute engine instance spawn in custom VPC network can't communicate to the internet now (like doing sudo apt update) or even communicate to google cloud storage (using gsutil), but they can communicate using private IP.
I also can't spawn dataproc cluster on that custom VPC (I guess because it can't connect to GCS, since dataproc needs GCS for staging buckets).
Since I do not really know about networking stuff and relatively new to GCP, how to be able to connect to the internet on instances that I created inside custom VPC?
After checking more in-depth about my custom VPC and Cloud VPN I realize there's misconfiguration when I establish the Cloud VPN, I've chosen route-based in routing option and input 0.0.0.0/0 in Remote network IP ranges. I guess this routes sending all traffic to VPN as #John Hanley said.
Solved it by using policy-based in routing option and only add specific IP in Remote network IP ranges.
Thank you #John Hanley and
#guillaume blaquiere for pointing this out
I run some web services running in Google Compute Engine. I want to secure them and make available only to my coallegues. I don't want to rely on web server security, so my idea was to configure a VPN with Google Cloud Platform.
My question may be silly, because I don't really know how VPN works. Is it possible to create a VPN in Google Cloud and connect to it directly from my laptop? I've tried to use "Hybrid Connectivity VPN" - but it allows only to connect to another VPN. When I make a tunnel, it asks me "Remote peer IP address". I don't have any on-premise VPN in my organization, also I am behind a NAT of my provider.
I know that that it could be possible in principle - once I've connected to VPN of my previous job. I've just used build-in Windows function "Add a VPN connection", inputed IP of the server and the secret. After that I could connect to the servers that were inside the corporate network.
Can I configure Google Cloud VPN to work in similar way?
Client-to-gateway(road warrior) setup is not supported by CloudVPN. For client-to-gateway scenarios, you can install and configure an IPSec VPN software, like Strongswan on a GCE VM and configure it for remote access. Users can than connect to this VPN server through VPN client and, after a secure tunnel established they can connect to all other VMs which are deployed inside the same network. With this setup, you can also configure NAT gateway and remove the public IP from other VMs. Configuring a NAT gateway is described in this article.
https://serverfault.com/questions/818101/does-gcp-support-p2s
I am trying to connect GCP VPN from my local work station (windows 8.1).
On GCP, I have created Route Based VPN and VPN tunnel as google cloud's documentation. I have used IKEv2 on routing.
On my local computer I have created a VPN over IPSec using shared secret generated from GCP. Here is the screen shot of my local VPN settings:
While connecting the vpn from my windows 8.1 pc, it shows the following error:
and in the GCP side, VPN tunnel status shows:
IKE version mismatch
in the Cloud VPN Gateway log it shows:
establishing IKE_SA failed, peer not responding
It seems IKE version is not matching in both side. Am I missing anything that failed to match IKE version? or any way to enable 'IKEv2' on my windows pc? Any kind of suggestions are welcome.
Thanks in advance!
Cloud VPN is rather end-point to end-point; which may provide tunnels in between networks, with overlapping sub-nets. in order to connect with your client, you'd to setup an OpenVPN Access Server or alike, to provide the gateway which to connect.
As per GCP Cloud VPN features
GCP Cloud VPN uses ESP in Tunnel mode with authentication. Cloud VPN
does not support AH or
ESP in
Transport mode. Note that Cloud VPN does not perform policy-related
filtering on incoming authentication packets. Outgoing packets are
filtered based on the IP range configured on the Cloud VPN gateway.
From your description, I am guessing you are trying to configure remote access VPN which is different from site-to-site VPN and not possible using Cloud VPN in one side and windows machine in another end.
However, as workaround, I would recommend using Strongswan VPN software to set up a VPN gateway on one of your instances. Which is also documented in GCP under "Set up an instance as a VPN gateway" in cases where Cloud VPN doesn't provide the required functionality.
We want to be able to connect to my on-premise database from our google cloud kubernetes.
We are currently attempting to do so by using "Create a VPN connection" from within the google console.
In the field IP address, I am forced to create (or pick from existing) "External IP Addresses".
I am able to link a single VM-instance to this External IP Address. But I want my VPN connection/tunnel to be between my on-premises network and EVERYTHING within my Google cloud network.
This IP should not just work as External IP Addr. for a single instance. I need to make it a gateway to the network as a whole. What am I missing?
Thanks in advance.
Another way to frame the question:
How do I find the IP Address of the gateway to my Google cloud network (VPC) and how do I supply that IP to the VPN Connection creation ?
The Cloud VPN connects your on-premises to the VPC, that means every Instance, Cluster or other products that use Google Cloud Engine (GCE).
As mentioned in a previous answer from avinoam-meir the VPN has at least two components: Gateway and Tunnel but I will add a third one: Type of routing.
a) Gateway: This is where you can add an existing or reserve any static IP address (from the Google Pool of External IP Addresses).
b) Tunnel: Where the encapsulated and encrypted traffic will flow to reach the Local IP ranges.
c) Type of routing: Cloud VPN has three possibilities:
Tunnel using Dynamic Routing
Route Based VPN
Policy based VPN
Depending on the type you choose, the routing happens in a different way but in general terms, it will propagate your subnetwork(s) to your on-premises network and receive the routes from it.
Important: Remember to open your firewall on your GCP VPC to receive traffic from your on-premises IP Ranges as the default and implied rule for Ingress will block it.
The implied allow egress rule: An egress rule whose action is allow, destination is 0.0.0.0/0, and priority is the lowest possible (65535) lets any instance send traffic to any destination.
The implied deny ingress rule: An ingress rule whose action is deny, source is 0.0.0.0/0, and priority is the lowest possible (65535) protects all instances by blocking incoming traffic to them.
The answer was simpler than I thought.
My question was:
How do I find the IP Address of the gateway to my Google cloud network
(VPC) and how do I supply that IP to the VPN Connection creation ?
The answer is simply to fill out the "Create a VPN connection" page. It automatically sets up whatever IP you get/choose in the "IP Address" field as the gateway. I did NOT need to configure this IP address to work as a gateway. Simply getting it assigned in this step is enough. Google does the rest behind the scenes.
You need to distinguish between gateway IP address and local IP range of the VPN tunnel
The gateway IP address is the IP of the gateway where all the packets from your on-premises arrive encapsulated and encrypted.
The local IP range of the VPN tunnel is the range of IPs that can be reached through the VPN tunnel. By default this is all the
private IP addresses of your GCP network
Create a NAT gateway [1] with Kubernetes Engine and Compute Engine Network Routes to route outbound traffic from an existing GKE cluster through the NAT Gateway instance.
Use that NAT gateway IP address to create a VPN connection to remote peer gateway.
[1] https://cloud.google.com/solutions/using-a-nat-gateway-with-kubernetes-engine
I'm running an application in EC2 which needs to connect to an external service running in a VPN (a connection to third party network). I have the IP address and auth details (pre-shared key) through which to connect, but don't know how exactly to setup the connection. Do I need to install a VPN Client or is there any other way through AWS Console?
If you can share the steps/tutorial to set it up, it would be really helpful.
I've configured Site-Site VPN and can see two tunnels under the VPN Connection (both are DOWN right now). I've shared the VPN config file with the third party and they have asked my source IP address to be used for both the tunnels. I'm assuming the source IP will be the public IP of NAT Gateway attached to my VPC (since the servers don't have public IP assigned to them).
You can use the Site to Site VPN(AWS hardware VPN) configuration from Amazon Virtual Private Cloud to your On-Premise Network which do not require a separate VPN Client. After the configuration, you can access the Server in the VPN from its IP range.
Following AWS User Guides will take you through to configure a VPN Connection. Basic configuration is straight forward and AWS will also provide automated scripts to setup configuration in your OnPremise network.
General Introduction to VPN Options Available in AWS: VPN Connections
Guide with Details in Setting up VPN: Adding a Hardware Virtual Private Gateway to Your VPC
Step by Step Guide for Configuration: Setting Up the VPN Connection
You can set up a VPN client in your EC2 instance but also can connect your VPC to the VPN server using:
VPN Connections.
Adding a Hardware Virtual Private Gateway to Your VPC