I've got a app plan (BASIC SMALL) with a private (hopefully) ip adress that can be found under Settings > Custom Domains.
When I try to access the content of the app using just the ip, it doesn't work. The site says "Error 404 - Web app not found." The hostname works just fine. When I ping the hostname it gives me the same ip adress. What do I have to do in order to be able to access it just using the ip?
That's not how Web Apps work, since you don't get a unique IP address assigned. You'll need to access it via yourname.azurewebsites.net or yourcustomdomainname.com - and then your requests are routed appropriately based on the name you provide.
If you absolutely needed a dedicated IP address, you'd need to deploy to a virtual machine.
When you host your web site on Azure web app it is bound to a virtual IP address that is shared with other web sites in the same app service plan. If you want to get a dedicated IP with your web site, please try to use Azure virtual machine with reserved IP. You could also choose App Service Environment
If you buy your custom domain, you can freely set DNS A records for that IP (it remains static). It sets binding of your domain to your web app. You can't access it directly by IP. Because on a given IP address and standard HTTP port 80, only one web can be running.
Imagine your web app could be open by entering that IP. You would "block" port 80 for zillions of other stuff running there.
If you check Properties blade there you will see a number of outbound IP addresses. If you consume some requests from web app / job / ... and have IP restriction set on the other side - you need to allow all these IPs.
As David suggested. If you really need a static IP - you need to run VM and set IP address as static or set VNet for web app.
Related
Our website is hosted on the Azure Linux web app, the site pulls data from third-party vendors. So we need to whitelist our website IP address to their server but after adding the IP for whitelisting still getting 401 unauthorized errors.
We checked the vendor and the IP has been configured properly but why we are getting 401 errors while pulling data via API call.
The IP address we found from Azure Portal --> web app --> select properties and the virtual IP address.
Any help or recommendation will be helpful.
If I understand you correctly, you are trying to whitelist the web app against the firewall for the third-party vendors app?
If so, then the virtual IP address that you have added is the ingress IP address for the web app. You need to add the outbound IP addresses from the Properties blade for the web app to the vendor's firewall.
You should note that there can be up to 11 of these IP addresses. Also, if you scale the web app up or down to a different service plan, or perform any change that will result in a new scale plan, the IP addresses will change. This does not apply to scaling out to multiple instances.
Using a static IP address solved the problem.
Playing with Azure App Service, I instantiated a simple web app. I tried to identify its IP address and found one in the properties of my app. It was described as 'virtual IP address'.
Trying to ping it or put it in my browser, it doesn't work and I can't find if it's an Azure configuration or a principle of virtual IP addresses... To be more precise, if I type '40.79.130.128' in my search bar, I crash on a 404 page, instead of my website page.
I read a bit on the topic, mainly what it is used for, but I don't understand if I can just reach it in my browser, because just typing it in my search bar is no use. What am I missing?
The Virtual IP address under your App Service on the blade Settings->Properties is the Shared IP.
The way IP address work in App Service is different. App Service app runs in an App Service plan, and App Service plans are deployed into one of the deployment units in the Azure infrastructure which is internally called a webspace and each of the deployment unit is assigned up to five virtual IP addresses, which includes one public inbound IP address and four outbound IP addresses.
All App Service plans in the same deployment unit, and app instances that run in them, share the same set of virtual IP addresses which means many App Services is behind same IP address hence you need to configure Custom Domain on your App Service to get it to work.
For configuring Custom domain refer to this link:
https://learn.microsoft.com/en-us/azure/app-service/app-service-web-tutorial-custom-domain
Please refer to below articles for details:
Inbound and outbound IP addresses in Azure App Service
App Service networking features
I have been at this since last couple of weeks. After tiring efforts leading to nowhere, I am posting here.
I have a Website built and hosted in IIS locally. I just bought domain name from GoDaddy. I have my computer's public IP where the website in IIS is present. What are my next steps so that I can keep my computer as server and link with domain name? So that website is accessible publicly through domain name.
I saw a lot of posts with Web Hosting in Azure or other places, do I HAVE TO buy and host to make my site public?
I am a novice website builder and have very limited knowledge about this.
first you need make sure your sever is secured, only open necessary ports
go to another computer, in browser input public ip to see if you can open your webpage
then in Godaddy you can add A record for your domain, to point your domain to your public IP, refer to this GoDaddy document: https://ca.godaddy.com/help/add-an-a-record-19238
If you are not comfortable or don't resource to do these, I suggest you host on Azure or other cloud providers
You could host your application in either Azure VM or your local machine. After all, Could VM should be more convenient because you don't need spend a lot of time to handle network issue and you don't need physical space.
When you decide to host your application locally, you have to ensure your are using windows server OS, otherwise, you have 10 concurrent request limit.
Access the application via domain is quite simple.
You need to enable port like 80 in windows firewall.Promise your server are in DMZ and can be accessed externally
Create IIS binding header with null domain and your public address
Try to access your website via your public IP address
Point godday domain to your public IP address
Add your domain to your Site's binding host header->host name field
If you decide to host your application in IAAS like Azure VM, then you have to create inbound rule for your port number and allow port in windows firewall. You also have to point your godday domain to your cloud VM's public IP address and create IIS binding with your domain. Finally, you should be able to access your website.
I'm migrating asp.net services that used to exist on a physical server on-premise to Azure. However they need to reach some web-services (SOAP) that will not be migrated to azure yet. These have a public IP but I need to set the hostname in order for IIS to properly redirect the requests to the correct service as there are several on the same server. Is there any way to create some sort of DNS-server in azure that is only available for the services created in azure that can resolve to the public IP-address outside of azure? (We have used the hosts file on the servers to achieve this previously)
I tried using the private DNS Zones, but as I've understood it they can only point to other azure services within the same vnet (correct me if I'm wrong). I've also tried creating a dnsmasq docker container. However, as this is running in a Linux container, it seems that I cannot put it in the same vnet as the asp.net app services. Thus I am unable to retrieve a private IP-address that these services can use to reach the DNS server.
In my understanding it is now possible to use Azure DNS Private Zones if you want.
You would need to use regional vnet integration to point your app's traffic to a vnet that is connected to the Private Zone. You need the following settings as well, which mean that all outbound traffic from the Web App is routed through the integrated vnet first, and that the Azure default DNS server is used for DNS.
WEBSITE_DNS_SERVER with value 168.63.129.16
WEBSITE_VNET_ROUTE_ALL with value 1
https://learn.microsoft.com/en-us/azure/app-service/web-sites-integrate-with-vnet#azure-dns-private-zones
If you don't want to use Azure DNS Private Zones, I think you can achieve similar results by directing the Web App to use a specific DNS server. This can be done using WEBSITE_DNS_SERVER and WEBSITE_DNS_ALT_SERVER app settings (the values are the IP addresses of the servers you want to use).
This is the most authoritative public statement I can find about using these settings.
Go to the web app->settings->Application Settings-> App Settings
section
Add the following: (WEBSITE_NODE_DEFAULT) should already be
there.
a. WEBSITE_DNS_SERVER with value having the IP address of the
primary DNS server.
b. WEBSITE_ALT_DNS_SERVER (optional), with value
having the IP address of a second DNS server.
Then save the settings & restart webapp in portal.
Double check the web app can actually
connect to the DNS server: a. In kudu console, run: Nameresolver.exe
[hostname-to-lookup] [dns-server-to-use]
First argument should be the
hostname you are trying to look up, second argument is one of the DNS
servers from step 1) If this times out, there is an issue with how
your DNS servers are configured (firewalls, etc.)
https://github.com/MicrosoftDocs/azure-docs/issues/13927#issuecomment-416382230
If using these settings with a DNS server that is only accessible via private IP, you would need to use regional vnet integration again to connect to a vnet. If the DNS server is on-prem, you have to connect through the integrated vnet over VPN or ExpressRoute.
It's possible but not using the private DNS Zone.
According to Name resolution for resources in Azure virtual networks. For the scenario Name resolution from App Service Web Apps in one virtual network to VMs in a different virtual network, you need to use your own DNS servers forwarding queries between virtual networks for resolution by Azure (DNS proxy). See Name resolution using your own DNS server.
In this case, you only allow this azure web service could resolve the public IP address outside of Azure. You could enable virtual network integration for your web app, this restricts your web app access in a private network. Then you could deploy a DNS server in the same Vnet as the web app integrated VNet. You could create an A type record in your DNS zone to point to your service Public IP, then add the DNS server's IP address into the DNS server of the Integrated web app Vnet in the portal. If so, the web app could resolve this public IP via a custom DNS server.
Hope this could help you.
I created a NodeJs web on non-classic virtual machine in Azure cloud. Then I started the app on port 80 as follows:
sudo NODE_ENV=production PORT=80 node server/app.js
The app started successfully. I also enabled port 80 using NSG.
I can access the app using IP address.
Now I purchased a domain name in names.co.uk and linked the IP address to record A(on registrar site). The same way as I was doing for the AWS site which is currently working.
But I could not access the app using custom domain name but app can be accessed directly using IP address.
Any help in this regard will be much appreciated.
you can try to follow this guide on official site Create a Fully Qualified Domain Name in the Azure portal, configure with the CName on your DNS service leveraging the Domain. It works fine on my side.
Besides, if you don't see the "public ip address" as the capture shows on the guide, you can find the ip address in this steps:
As if you don't have a static ip address, the public ip may change when your VM start each time.
The way I did is absolutely correct. The only problem was that it took some time to get the changes reflected.