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Using ARR with one single public IP to serve multiple public servers.

December 6, 2017, 6:35 am
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Hello;

I am looking for the correct procedure to help me configure my IIS with ARR or URL Rewrite to support my public web sites environment.  My ISP only assign one single public IP address, therefore I am considering to use ARR or URL rewrite to solve my problem.

Here is my web servers and Exchange server scenarios.

DMZ - 1 x ARR server, 1 x company public web server (http://www.company.com)

LAN - 2 x Exchange 2013 servers (DAG)/(OWA)/(ActiveSync), (https://mail.company.com), 1 x intranet web server (http://apps.company.com)

Because I am going to change ISP, and they assign me one single public IP address only, which means that I have to use this single IP for all URL mentioned before.  For example, if the single public IP is 1.2.3.4, then I have to map like this...

www.company.com -> 1.2.3.4 (port 80 and port 443 required) (this server deployed in DMZ subnet)

mail.company.com -> 1.2.3.4 (port 80 and port 443 required) (this server deployed in LAN subnet)

apps.company.com -> 1.2.3.4 (port 80 and port 443 required) (this server deployed in LAN subnet)

I want to use ARR or URL rewrite to help me redirect all traffic to the right servers but each server require both port 80 and port 443.

I found this link to show me how to configure Exchange, but is there any conflict with my case above?  What will be the best configuration in order to make it work?

https://blogs.technet.microsoft.com/exchange/2013/07/19/part-1-reverse-proxy-for-exchange-server-2013-using-iis-arr/

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Reverse proxy return 404 error.

January 7, 2018, 4:51 pm
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Hi,

I deployed a revese proxy in my IIS server. I created the proxy rule to rewrite my front-end to backend server. I can access both two sites directly. However, when I access the website, it just return 404 not found? Do I miss something? I just install both ARR and URL rewrite. Then create the rule for my arr server. Thanks in advance.

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ARR Proxy As App Pool Identity

December 3, 2015, 11:54 am
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I have done some searching and have been unable to find an answer for this. Here is my setup:

Server1: Windows 2012R2 IIS 8.5 with ARR & URL Rewrite - Reverse proxy to forward any requests to the /API to Server2.

Server2: Windows 2012R2 IIS 8.5 - Hosts the API.

What I am trying to accomplish is to have the calls that ARR routes from server1 to server2 use the app pool account from server1 or another account that I can define instead of the user's identity. Is this possible with ARR as a proxy? 

 

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Websocket (Fleck) reverse proxy problem

January 12, 2018, 8:13 am
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Hi guys, 

I have a problem with reverse proxy, im trying to do reverse proxy because my Fleck websocket has ip: ws://localhost:8181 but on develop server 8181 port is not open and i have to configure Angular5 frontend opens a channel on localhost:80/status and localhost:80/status redirect to ws://localhost:8181

help?¿

Thanks!

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ARR MSI checksum change?

January 26, 2018, 3:21 pm
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It looks as though the MSIs for ARR have changed silently with a version bump to 3.0.1952 (now 3.0.1988?)- the current checksums are now:

  • d28562a13d5af235d2c3dfe2f0e82214af696486 requestRouter_x86.msi
  • 9bbe610e347909afa68230778b9242bb57bbbc55 requestRouter_amd64.msi

The old checksums were 69bd0a5fb2a9f9cbed3a5cb1a4ca429698610d07 and 5f4f24058dcd675da46dc0c4b17969d41fce68c1 respectively. The new x64 MSI does seem to be signed by a valid MS code signing certificate. 

I'd not be too concerned, but the lack of any change notes is a shame, and the WebPI installer XML document still has the old checksums listed and is currently broken. Good to know it verifies the checksums at least. 

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Server Farm Runtime Statistics not going to the correct farm - newbie question

February 8, 2018, 4:12 pm
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I'm a complete newbie when it comes to Server Farms and ARR.  I was able to set up 2 server farms.  test.domain.com and dev.domain.com.

Dev was the first I set up and everything works as I expected.  I can browse to dev.domain.com and see the total request number go up in monitoring and management.  I set up the test farm and it works like it should, except the total request number stays at 0 under the test farm and increases on the dev farm.

I'm guessing I need to do something with the URL re-write tool, but I'm not sure what that is.

Thanks!

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AAR 3.0.1988 does not install correctly

February 12, 2018, 10:29 pm
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I'm finding that AAR 3.0.1988 does not install correctly. I tried it on 2 different servers and it seems to install successfully (it shows in Programs & Features, and log entries in Event Viewer show success). However a) Web Platform Installer says it is not installed (the Add button still shows next to it), b) the Application Request Routing Cache option in IIS does not appear, and c) reverse proxying does not work (not sure if it's because it is not installed correctly or because I need to enable proxying which I can't without the ARR Cache option).

I uninstalled it and installed the previous version of AAR (3.0.1952) and that works. So I believe something is wrong with 3.0.1988. It's also worth pointing out that the download page (https://www.microsoft.com/en-us/download/details.aspx?id=47333) says the version is 3.0.1952 which is incorrect -- that is the previous version, and the downloaded version is actually 3.0.1988.

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Client Certificates and Authentication

February 13, 2018, 10:47 pm
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I would like to replaced TMG with ARR to front end two servers.  I have an IIS Server and a SharePoint server. 

What I would like to do is have ARR request the client certificates and login to the back-end servers.  I have been able to get ARR to request the cert and forward the requests to the other servers.  The client certificate is in the header variables, but I am unable to get the back end servers to log in without prompting. 

Can this be done?   I am seeing conflicting information as how to set this up - ARR needs anonymous authentication and the back-end servers have the windows auth specified. 

Any pointers in where I should look?   

Thanks

Mark

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The Server HTTPThe set of server variables "http_host" doesn't work_HOST

March 2, 2018, 7:07 am
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I've installed aar and rulrewrite in IIs10, the proxy rule are as following :

<rules><rule name="sta_newfile_253" enabled="true"><match url="^default/(.*)" /><action type="Rewrite" url="http://192.168.101.110/{R:0}" /><serverVariables><set name="HTTP_HOST" value="www.test.com" /><set name="HTTP_COOKIE" value="ID=FD" /></serverVariables>	</rule></rules>

The rule works, but the value of "http_host" is not equal to what i set in the rule

HTTP_COOKIE:ID=FD
HTTP_HOST:192.168.101.110

How can I set up so that I can make the "HTTP_HOST" equal “www.test.com”

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request routing scenario is this possible?

March 5, 2018, 9:20 am
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This describes a test situation that i would like to get working and apply to my internal website.

I want my local IIS server to route all information to microsoft.com (just an example) and show a working website running onhttp://127.0.0.1/test that shows the microsoft page. I used the wizard to create a proxy rule on the test directory in my default website in IIS. this is the webconfig it created, but what i want doesn't work, so is this even possible to do? In the end i want to have three virtual directory's that proxy to a diffrent internal iis webservers. If this is not possible using IIS, Are there appliances out there that make this possible?

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<rewrite>
<rules>
<rule name="ReverseProxyInboundRule1" stopProcessing="true">
<match url="(.*)" />
<action type="Rewrite" url="http://www.microsoft.com/{R:1}" />
</rule>
</rules>
<outboundRules>
<rule name="ReverseProxyOutboundRule1" preCondition="ResponseIsHtml1">
<match filterByTags="A, Form, Img" pattern="^http(s)?://www.microsoft.com/(.*)" />
<action type="Rewrite" value="http{R:1}://127.0.0.1/{R:2}" />
</rule>
</outboundRules>
</rewrite>
</system.webServer>
</configuration>

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ARR load balance can't be reached

March 12, 2018, 4:23 pm
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Hi,

I just deployed the load balance with application request routing. But I can't reach the backend server after I finish configuring the LB. I just create the Server farm and added the backend server to it. The health check could be passed and monitoring and management show the server is health and availlable. However, when I access the website, it return site can't be reached. I can access the backend server from ARR server. I can also access the front-end website from external. How can I fix this? Thanks in advance.

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Server Port Display

March 19, 2018, 1:42 am
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When adding a server if you go into Advance Settings you can change the httpPort, httpsPort and weight.

It would be helpful if the list of servers displayed this information, because if you come back later you might want to see this information.

It would also be helpful if you could edit these settings without having to delete and re-add it, just to change a port or weight of a server

Add Server

Server List

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How to build the ARR load balance with different port?

March 21, 2018, 2:29 pm
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Hi,

I can rewrite the IIS site from 80 to backend http://localhost:8080 port site directly. However, When I add the backend server to server farm and build the load balance. It always return the page can't be reach.  

This is my load balance rule.

<rule name="ARR_myserverfarm_loadbalance" patternSyntax="Wildcard" stopProcessing="true"><match url="*" /><action type="Rewrite" url="http://myserverfarm/{R:0}" /></rule>

Thanks in advance.

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Using URL Rewrite with reverse proxy

March 23, 2018, 10:04 pm
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Hi ,

My Scenario is

  1. IIS is hosting website with the name ClientWebSite on Internal Server(server 1).
  2. Two clients given different URL name Client1Website and Client2Website which need to be map with ClientWebSite.

what i did is configured Public Server (server 2) uses ARR to redirect to ServerFarm( with server1 in its list of servers) and uses URL Rewrite to remove Client number from the request. but now i need to implement reverse proxy on public server (server 2)

Problem is URL rewrite getting back ClientWebSite because its already is rewritten.

if need to use outbound rule then how can i know response is for request of Client1Website or Client2Website?

any how reverse proxy can be achieve with rewrite in this scenario.

Farraz

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ARR load balance not working when the backend server has a domain

March 28, 2018, 2:34 pm
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Hi,

I would like to use a domain name for my internal website. However, if I add domain name to my backend server , the load balance stop working. If I only leave the website as localhost, then everything works fine. So how could I set the application request routing to allow ARR domain name? Thanks inadvance.

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How to add request header with Application request routing?

March 28, 2018, 5:00 pm
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I would like to add a request header when IIS relay the request header to backend server. However, I can find nowhere to achieve this. So is it possible for Application request routing to add a custom request header? Any suggestion will be appreciated.

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IIS on Port 80 Apache on Port 8080 CSS and Images Not Resolving

March 29, 2018, 7:44 pm
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I have a domain xx.mydomain.com that comes into IIS over port 80.

I have ARR configured so that when xx.mydomain.com is encountered, it directs it to localhost:8080/site (Apache/xampp)

It appears to work because my requests are routed and the desired page is served.  However, none of the styles are applied.  I see errors saying that the css files were interpreted to be css, but were sent as text/html.

Admittedly, I find this a little confusing handing off the incoming url to a server address and then converting back to the url in the server response.

Below is what I have for rewrite rules:

<rewrite><rules><rule name="Inbound Rule" enabled="true" patternSyntax="Wildcard" stopProcessing="true"><match url="*" /><action type="Rewrite" url="http://xx.mydomain.com:8080/site/{R:0}" /></rule></rules><outboundRules><rule name="ReverseProxyOutbound" preCondition="ResponseIsHtml1" enabled="true"><match filterByTags="A, Area, Base, Form, Frame, Head, IFrame, Img, Input, Link, Script" pattern="^http(s)?://xx.mydomain.com/(.*)" /><action type="Rewrite" value="http://xx.mydomain.com/{R:2}" /></rule><rule name="RewriteRelativePaths" preCondition="ResponseIsHtml1" enabled="true"><match filterByTags="A, Area, Base, Form, Frame, Head, IFrame, Img, Input, Link, Script" pattern="^/(.*)" negate="true" /><action type="Rewrite" value="http://xx.mydomain.com/{R:1}" /></rule><preConditions><preCondition name="ResponseIsHtml1"><add input="{RESPONSE_CONTENT_TYPE}" pattern="^text/html" /></preCondition></preConditions></outboundRules></rewrite>

If anyone has any ideas what could be the issue, I would appreciate it.  I feel like I'm close on this.

Thank you,

- Nick

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ARR 2.0 BUG - combined with managed http module timeout on read inputstream

March 29, 2011, 12:28 pm
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Hey.
I have an ARR related problem. I have posted the full description at stackoverflow too:
http://stackoverflow.com/questions/5475608/iis7-application-request-routing-arr-reverse-proxy-combined-with-managed-module

Basically I am using ARR in reverse proxy mode with URL rewrite, all works fine, all pages delivered ok.
Then I add a managed http module. Works fine too. I can manually log in a file request headers, response headers, etc.
I have used a response.filter custom built stream applied on RequestStart and I can see the response too.


The moment I try to read the Request.InputStream on BeginRequest, I get timeouts:
HTTP Error 502.3 - Bad Gateway The operation timed out Handler ApplicationRequestRoutingHandler Error Code 0x80072ee2
MODULE_SET_RESPONSE_ERROR_STATUS Warning ModuleName="ApplicationRequestRouting", Notification="EXECUTE_REQUEST_HANDLER", HttpStatus="502", HttpReason="Bad Gateway", HttpSubStatus="3", ErrorCode="2147954402", ConfigExceptionInfo="" SET_RESPONSE_ERROR_DESCRIPTION Warning ErrorDescription="The operation timed out"


If I read the Request.InputStream on EndRequest of my module, it has the size 0 bytes, even if I made a POST.

I am just guessing ARR is disturbed by the fact that I read the input stream.


LATER EDIT: Made a TCP dump with WireShark and looked also a WinHttp tracing in both cases (module accessing input stream and without accessing). Apparently ARR only sends the initial TCP packet with the headers, it doesn't send anymore the second package with the POST content, and then it RSTs the connection. This seems like a bug to me.

Ideas?
Thanks.
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IIS reverse proxy didn't return right content type

April 11, 2018, 3:08 pm
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Hi,

I just build the reverse proxy on my local server. However, the static content file just return 500 when I access the website. The image display the content type of text/html. I would like to know the content-type of the static file depend on the frontend server or backend server? And how can I fix the 500 error.

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Web application lose session in ARR load balance

April 16, 2018, 4:09 pm
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I would like to host three backend server behind the application request routing load balancer. However, the session always get lost. So how can I fix this? I would like to share the session for all three websites. Thanks in advance.

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