I have a S2S VPN connection with an external party which works fine. However, they have advised that when requests are sent over the VPN tunnel to them, they want to see the request as coming from a public IP address, rather than from our private address range.
Is there a way to configure this in Azure?
For info, we are using the standard Azure VPN gateway as opposed to a third part device from the marketplace.
Thanks
David
If I am correctly understanding, they want to requests are sent over VPN via a public IP address, rather than from our private address range. I don't think it's possible since a VPN extends the virtual private network across the public network. and enables users to send and receive data across shared or public networks as if their computing devices were directly connected to the private network.
You could create a VPN tunnel between the local virtual network and Azure virtual network via S2S VPN gateway. The tunneling protocol is used to encapsulate and encrypt the data going to and from your device and the internet. You only can communicate with the Azure virtual network via the private address range if using VPN.
Related
I need to setup connection between Express Route and VNET in Azure.
It requires to create Virtual Network Gateway as Express Route Gateway type.
This Gateway ask for public IP.
So, I wonder why we need the public IP? Can Vnet and Express route can interact through private IP?
Please help me answer.
The answer is in the Microsoft FAQ:
The public IP address is used for internal management only, and
doesn't constitute a security exposure of your virtual network.
Vpn gateway is used to send the encrypted traffic across the public internet for this communication it requires a public IP. The public IP assigned to the virtual network gateway will let you connect Azure VPN gateway from your on-premises network or the Internet.
When you create a virtual network gateway, you need to specify several settings. One of the required settings, '-GatewayType', specifies whether the gateway is used for ExpressRoute, or VPN traffic. The two gateway types are:
Vpn - you use the gateway type 'Vpn'. to setup Site-to-Site, Point-to-Site, and VNet-to-VNet connections all use a VPN gateway.
ExpressRoute - To send network traffic on a private connection, you use the gateway type 'ExpressRoute'. This is also referred to as an ExpressRoute gateway and is the type of gateway used when configuring ExpressRoute.
Reference
I'm experiencing some deeply frustrating issues when trying to connect to a SQL server Private Endpoint. Setting aside for a moment a complete specification of the problem, I'd like answers to the following questions
Is it the case that a SQL Server Private Endpoint will only listen to connections from an Azure Virtual Machine? I have seen it suggested by 3rd parties that this is the case but cannot find this explicitly documented by MS. (To clarify, if only VMs can connect, then this would mean, for example, that an Azure Load Balancer could not use Private Endpoint as a backend resource; and, for example, that an on-premise VM could not connect to a Private Endpoint through a VPN - is that correct?)
Presuming the answer to the above question is Yes, then does the restriction apply such as to prevent Private Endpoint from listening to connections forwarded from an Azure VM interface?
(For example, say a firewall in a VM in Azure. Inside the firewall VM, the IP 192.168.0.10 is configured. In Azure, the VM interface is associated with only a single IP address which is IP 192.168.0.6. In this scenario, the firewall VM will respond to ARP requests with ARP responses saying "I have 192.168.0.10", but 192.168.0.10 is not associated by Azure configuration with any Azure virtual network interface. In said case, will a connection to the Private Endpoint using source address 192.168.0.10 work? Or is it the case that the PE will listen for connections only with a source address 192.168.0.6?)
To answer your questions:
It's possible that use a private endpoint as backends in the Azure Load balancer because Azure LB supports NIC or IP address as the backend target. Also, the on-premise VM surely can connect to a private endpoint through VPN tunneling, read this document for more details.
A VM by default sends all outbound traffic to the IP address that's assigned to the primary IP configuration of the primary network interface. So it will use source address 192.168.0.6 when connecting to the private endpoint. Read the network interface constraints.
The Problem
I'm trying to understand more about networking, firewalls, and IP ranges to help me solve a few real-life problems. The problem I ran into is that the SQL server I'm connecting to has a firewall which can list individual IP's or IP ranges, but my ISP changes my IP fairly frequently, which means that whitelisting my current IP is a temporary solution and I'll eventually be disconnected.
The Question
If I wanted to stabilize my IP and make it so that it comes from a predetermined range (or even a single static IP), would the best way of doing that be to make a virtual network that I can VPN into that has a specified range of IP's? Or is there any easier solution?
Details
I'm interested in the answer at a broad level, but the specific database I'm connecting to is on Azure. Hence, my thought process would be to create a Virtual Network and and a Virtual Network Gateway, which I would connect to using a standard VPN connection tool like Hamachi or Open VPN. I'm assuming then that I could open up a tool like PGAdmin and connect to the database, because the database would consider the incoming connection to be from the IP range that I've whitelisted and that the Virtual Network sits on. Is this accurate?
As you stated, if there is a public IP range from your on-premise outbound traffic, you just need to whiltelist the IP list on the firewall of Azure SQL database server. It is a simple method.
If you want to block the public endpoint from on-premises machines, you can use private endpoint for Azure SQL database. Read On-premises connectivity over private peering for more details.
With Private Link, customers can enable cross-premises access to the
private endpoint using ExpressRoute, private peering, or VPN
tunneling. Customers can then disable all access via the public
endpoint and not use the IP-based firewall to allow any IP addresses.
I'm trying to setup a Point-to-Site (P2S) VPN from my Windows 10 machine to my Azure Server and, even successfull connect to the VPN, I cannot connect to the server.
My Azure server has 2 network interfaces:
1st has private IP 10.0.0.5/24 (and an associated Public IP, that allow me to connect with Remote Desktop normally, but off the VPN).
2nd has private IP 10.0.0.4/24, without Public IP. (the other public IP is used with the virtual network gateway to use the VPN).
I've added the net/subnet "172.16.10.0/24" as addresses pool in my virtual network gateway.
* When I connect, an IP /32 address is assignet to my local machine, like 172.16.10.3 / 255.255.255.255, and I can ping 172.16.10.0
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The certificate setting is ok, the connection to the VPN is OK. I only cannot connect to my Azure Server on my second interface 10.0.0.4.
Any idea that I've forgot to do?
Thank you.
The solution: My Private IP range on Azure local network Gateway has been wrong on setup. I've fixed specifying my correct local IP range, but, not only this, a new route table was created, associating this with the GatewaySubnet (in the Virtual Network).
Thanks to Nancy Xiong and msrini-MSIT for help.
I have set up a new virtual machine and added it to a virtual network.
Now my difficulty is what will be the VPN Peer IP Address I'll share with clients? Is it the public IP of my virtual machine?
Also the VPN host IP address? Is that the public IP as well? All these have me confused as I have to provide them to our clients.
Where can I find these info on Azure?
You have to create two Gateways for a Site-to-Site VPN connections:
1) a Virtual Gateway which will serve es public endpoint for the other site (network)
2) a Local Gateway which "mocks" the public endpoint of the other site (network)
It is explained quite good here: https://azure.microsoft.com/en-us/documentation/articles/vpn-gateway-howto-site-to-site-resource-manager-portal/ - You need to check the compatibilities between Azure and the VPN device (check https://azure.microsoft.com/en-us/documentation/articles/vpn-gateway-about-vpn-devices/)