My VNet won't allow me to connect to the s2s location via p2s connection.
I'm trying to connect the Azure VPN client on my machine and reach a site that is allowed in a network which I have a s2s connection to.
Here's the thing, I can't get traffic to flow from my pc running the VPN client, out to the target site.
Topology
PC > VPN Client > VNet via p2s > Remote network via s2s > FTP server
I'd like to be able to ping the FTP server from my machine.
Currently only devices in the VNet can ping.
I tried setting up BGP but it broke the connection, as I don't really know how things should be set.
I don't have access to the remote site or it's devices.
I have a Azure local network gateway which is configured as the s2s location.
I'm sorry if that doesn't make sense.
Edit: here is the picture of the network
BGP is the standard routing protocol which enables the Azure VPN Gateways and your on-premise VPN devices to exchange "routes" that will inform both gateways on the availability and reachability for those prefixes to go through the gateways or routers involved.
To configure the BGP, your on-premise device should also support BGP. Read
What address does Azure VPN gateway use for BGP Peer IP?
What are the requirements for the BGP Peer IP addresses on my VPN device?
What should I specify as my address prefixes for the Local Network Gateway when I use BGP?
Without BGP, If you add the point-to-site addresses after you create your site-to-site VPN connection, you need to update the routes manually. You need to manually add the routes to the remote network on your machine.
For more information, you could refer to configure and validate virtual network or VPN connections. Except the Ping tool, you prefer to use TCping tool, see the detailed steps.
Generally, you could troubleshoot the issue by searching the common issue and solution in the virtual network gateway---Diagnose and solve problems on Azure portal. It's recommended to new a support ticket to get your issue resolved quickly.
My solution to this as I can't enable BPG is to use a proxy server within the VNet.
Related
In my setup, I have an on-prem environment that is connected to my Azure environment using S2S VPN connection. We, developers, use P2S connection to access Azure environment.
Our setup looks like on the image below:
We'd also like to access on-prem resources, however that only works when BGP is enabled. Would it be possible to somehow manually adjust routes, so that we do not need to enable BGP ? If yes, how can I do that ?
We'd also like to access on-prem resources, however that only works when BGP is enabled. Would it be possible to somehow manually adjust routes, so that we do not need to enable BGP ? If yes, how can I do that ?
Unfortunately, there’s no workaround to connect to your Site-to-Site VPN from your Point to Site VPN connected to same V-net without BGP.
You can use BGP and route your traffic to communicate between your On-prem site connected to S2S and your client machines connected via P2S to Azure V-Net.
The Clients can only connect to Vnet without BGP, and the client can connect to on prem Site given S2S has BGP enabled.
References:
Azure VPN Gateway: About P2S routing - Azure VPN Gateway | Microsoft Learn
Azure routing | from p2s client VPN to s2s network on-prem - Microsoft Q&A by Sai Kishore
Is there a VPN solution in Azure that can assign a static public IP to the clients connected for me to achieve full tunnelling? may be in P2S VPN?
P2S VPN does not have full tunneling. Is there any other alternate solution?
• No, you can’t assign a static public IP address to the clients for a VPN solution in Azure as the client address pool that needs to be defined while deploying a VPN gateway in Azure is a subnet of the IP address spaces that the virtual network is created out of.
But you can configure forced tunnelling in your Azure virtual network on your VPN gateway subnets as illustrated below. In the below image, forced tunnelling is shown for Site-to-Site VPN scenario but it can also be implemented for Point-to-Site VPN scenarios in the same way. The Frontend subnet is not force tunneled. The workloads in the Frontend subnet can continue to accept and respond to customer requests from the Internet directly. The Mid-tier and Backend subnets are forced tunneled. Any outbound connections from these two subnets to the Internet will be forced or redirected back to an on-premises site via one of the Site-to-site (S2S) VPN tunnels as shown below.
This allows you to restrict and inspect Internet access from your virtual machines or cloud services in Azure, while continuing to enable your multi-tier service architecture required. If there are no Internet-facing workloads in your virtual networks, you also can apply forced tunneling to the entire virtual networks.: -
• Also, please note that you can *configure the above for your P2S clients by securing the Internet traffic via Firewall Manager and advertising the 0.0.0.0/0 route to your VPN clients. This makes your clients send all internet bound traffic to Azure for inspection. Then, firewall SNATs the packet to the PIP of Azure Firewall for egress to Internet. For this purpose, setup the Azure Firewall Policy to allow P2S traffic to Internet and to advertise all the traffic from 0.0.0.0/0 to your VPN clients, you would need to break them into two smaller subnets 0.0.0.0/1 and 128.0.0.0/1 as mentioned in the below documentation: -
https://learn.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-p2s-advertise-custom-routes#forced-tunneling
Also, you can add the code below in your ‘azurevpnconfig.xml’ file that can be directly downloaded from the templates section if the above said subnets cannot be added in ‘Default Routes’ on the portal.
<clientconfig>
<includeroutes>
<route>
<destination>0.0.0.0</destination><mask>1</mask>
</route>
<route>
<destination>128.0.0.0</destination><mask>1</mask>
</route>
</includeroutes>
</clientconfig>
I'm looking for a solution where I need establish another VPN gateway separate to the one I have in hub and spoke Architecture. I would need something like this on the diagram bellow. It seems that Azure does not support that. When I try to deploy extra VPN GW I'm getting message that this is not possible because peering with gateway transit exists. Does any one have Idea how to achieve something like this ? I'm googling for quite some time and can't find anything.
Required Azure Network
Found an MS document that can help you add additional Site-to-Site (S2S) connections to a VPN gateway that has an existing connection. This architecture is often referred to as a "multi-site" configuration. You can add a S2S connection to a VNet that already has a S2S connection, Point-to-Site connection, or VNet-to-VNet connection. There are some limitations when adding connections. Check the Prerequisites section in this article to verify before you start your configuration.
Prerequisites
• You are not configuring a new coexisting ExpressRoute and VPN Gateway configuration.
• You have a virtual network that was created using the Resource Manager deployment model with an existing connection.
• The virtual network gateway for your VNet is RouteBased. If you have a PolicyBased VPN gateway, you must delete the virtual network gateway and create a new VPN gateway as RouteBased.
• None of the address ranges overlap for any of the VNets that this VNet is connecting to.
• You have compatible VPN device and someone who is able to configure it. See About VPN Devices. If you aren't familiar with configuring your VPN device, or are unfamiliar with the IP address ranges located in your on-premises network configuration, you need to coordinate with someone who can provide those details for you.
• You have an externally facing public IP address for your VPN device.
Would suggest you follow this MS document to configure a connection
I deployed an openvpn virtual appliance and clients can reach peered networks, the VNET of the appliance itself, but not the network onpremise that is reachable via the virtual network gateway (routed VPN). When I use the P2S OpenVPN provided from Azure clients can reach onpremise network. What am I missing ?
I deployed an OpenVPN appliance because Azure OpenVPN lacks ccd support.
I solved the problem by adding the OpenVPN client IP range to the VNET address space. I then created a subnet with the same IP range. Obviously, you can't put any resource in this subnet. By then adding this subnet to the route, OpenVPN clients could traverse the gateway.
After my test on my windows client, I can directly access the on-premise network from the Azure VPN gateway based VNet or access the resources in the VPN based VNet from the on-premise network. You could follow these tutorials:
Configure a Point-to-Site connection to a VNet using native Azure certificate authentication: Azure portal
Set up OpenVPN® Protocol on Azure VPN Gateway.
Configure OpenVPN clients for Azure VPN Gateway
I have not deployed an OpenVPN virtual appliance, but I think it will be something like this: Point-to-Site (P2S) connection using OpenVPN infrastructure
According to this quick start, If you use a virtual VPN appliance, It is necessary to create a routing table on Azure so that traffic to your VPN subnet is directed back to your VPN instance and enable IP forwarding for this network interface. You could get more details about custom routes.
Feel free to let me know if I am misunderstanding you.
I have a strange requirement for IKEv1 VPN to a Cisco ASA and Checkpoint system with Azure.
We setup two Azure policy based VNet gateways, virtual networks and associated virtual machines.
The connection has to be IKEv1 AES-256-SHA1-DHGroup2 site-to-site connection per their test and production environments so we setup one for test and production.
The third party system does not support RFC1918 addressing within VPN
tunnels (encryption domain) and/or Peers. There must be publicly
assigned IP addresses for the VPN tunnel, as well as a publicly routed
IP address for the peer.
They recommend using subnets within the tunnel negotiations, and using
your access-lists to narrow this down to specific hosts (subnet SA’s
vs. host SA’s). In the event you need to “hide” multiple hosts behind
a single IP address, you should PAT using a publicly assigned address
to be included in the VPN tunnel. NAT-T (UDP Encapsulation of IPSEC)
is not supported due to global configuration items which affect
multiple customers.
My question is when is NAT-T performed when connecting to an Azure virtual network gateway in policy-based (IKEv1) mode on site-to-site (S2S) connections? Is it done at all or when is it performed? Is it only performed if there is a load balancer out front?
I think I tried to answer the same questions on the MSDN forum. Just re-iterate the answers:
NAT-T is performed on the outer packets/addresses of IPsec packets.
Azure VPN gateway does NOT perform any NAT/PAT functionality on the inner packets in/out of IPsec tunnels. So if you use public IP addresses inside of your on-premises network and your Azure virtual network they will stay the same to/from the Azure VPN gateways and IPsec tunnels.
You can use public IP address spaces as "private" IP addresses on your Azure VMs / Azure virtual network. These will be treated like "private" addresses by the Azure VPN gateways. We will not NAT those inner packets.
Hope this helps.
Thanks,
Yushun [MSFT]
To clarify: Have you gone through this suggestion :
Site-to-Site – VPN connection over IPsec (IKE v1 and IKE v2). This type of connection requires a VPN device or RRAS. For more information, see Site-to-Site:
https://learn.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-howto-site-to-site-resource-manager-portal
Point-to-Site – VPN connection over SSTP (Secure Socket Tunneling Protocol). This connection does not require a VPN device. For more information, see Point-to-Site:
https://learn.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-howto-point-to-site-resource-manager-portal
VNet-to-VNet – This type of connection is the same as a Site-to-Site configuration. VNet to VNet is a VPN connection over IPsec (IKE v1 and IKE v2). It does not require a VPN device. For more information, see VNet-to-VNet:
https://learn.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-howto-vnet-vnet-resource-manager-portal
Multi-Site – This is a variation of a Site-to-Site configuration that allows you to connect multiple on-premises sites to a virtual network.
Only the traffic that has a destination IP that is contained in the virtual network Local Network IP address ranges that you specified will go through the virtual network gateway. Traffic has a destination IP located within the virtual network stays within the virtual network. Other traffic is sent through the load balancer to the public networks, or if forced tunneling is used, sent through the Azure VPN gateway