Define Reverse Proxy and Deffered Authentication Schema

Hi Experts,
Can some one help me with the Definition for "*Reverse Proxy in OAM*" and "Deffered Authentication Schema (*DAS*) in Directory server". And please quote one example for understanding.......
Thanks in Advance.
Sandy
Edited by: sandyb4u on Oct 11, 2010 1:34 AM

Hello Markus,
1. have you checked out Alon Weinstein's Weblog <a href="/people/sap.user72/blog/2005/02/23/the-reverse-proxy-series--part-2-iis-as-a-reverse-proxy">The Reverse Proxy Series -- Part 2: IIS as a reverse-proxy</a>?
2. Is the IIS a must? Can you give Apache or SAP Web Dispatcher a try. Prakash Singh wrote a Weblog <a href="/people/prakash.singh4/blog/2005/08/16/how-to-setup-webdispatcher-to-load-balance-portal-in-a-clustered-environment">How to setup webdispatcher to load balance portal in a clustered environment</a>.
Regards
Gregor

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IIS Reverse Proxy and Basic Authentication

Hi,
we've currently put a WebAS 6.40 serving a BSP Application in our Appl-DMZ. For the access via Web the IIS Reverse Proxy is used, which works fine as long as you use a service for which a user is provided (in SICF). But if you don't provide a user in the service (in order to debug the BSP Application) you have to authenticate yourself using Basic Authentication (Browser Popup) which does not work (the popup returns and returns ...)
I' ve browsed the forums and it seems that the IIS Reverse Proxy does not support (the forwarding) of Basic Authentication "requests".
So my question, does someone exactly know if the IIS Reverse proxy supports Basic Authentication or not ?
Thanks,
Markus

Hello Markus,
1. have you checked out Alon Weinstein's Weblog <a href="/people/sap.user72/blog/2005/02/23/the-reverse-proxy-series--part-2-iis-as-a-reverse-proxy">The Reverse Proxy Series -- Part 2: IIS as a reverse-proxy</a>?
2. Is the IIS a must? Can you give Apache or SAP Web Dispatcher a try. Prakash Singh wrote a Weblog <a href="/people/prakash.singh4/blog/2005/08/16/how-to-setup-webdispatcher-to-load-balance-portal-in-a-clustered-environment">How to setup webdispatcher to load balance portal in a clustered environment</a>.
Regards
Gregor

Sun Web Server Reverse Proxy and Weblogic HTTP to HTTPS redirection

Hi,
I am currently testing reverse-proxy from SJSW 7.0 update 5 to Weblogic server but I have encountered an issue.
I have configured a context root to be forwarded to weblogic:
Web Server: www.server.com
URI: /path
Reverse Proxy URL: wlserver:9000
When I access https://www.server.com/path, I am getting the correct page. The issue is, the weblogic server is configured to redirect HTTP access to HTTPS, i.e., when I access http://www.server.com/path, it should be redirected to https://www.server.com/path. However, that is not the case. What happens is that I am being redirected instead to https://www.server.com/.
If I don't use reverse proxy, that is, if I use the libproxy.so from weblogic, I get the correct redirection.
Would appreciate it very much if someone can help me troubleshoot this issue.
Thanks in advance!
Edited by: agent_orange on Jul 29, 2010 2:30 AM
Edited by: agent_orange on Jul 29, 2010 2:31 AM

I am not sure, how you have configured your reverse proxy since you didn't attach / refer your current configuration file. this is how I would do it..
- create a new configuration (using web server 7 admin gui , within configuration wizard, disable java option if you plan to use web server 7 only for reverse proxy)
- select this new configuration and go to reverse proxy and try to reverse proxy / to the origin server.
that is all it should need.
your obj.conf or <hostname>-obj.conf depending on your configuration should look like following snippet
<Object name="default">
AuthTrans..
NameTrans fn=map from="/" to="/path" name="reverse-proxy-/"
</object>
<Object name="reverse-proxy-/">
Route fn=....
Service ..
</Object>
this is all you should need..
However, if you wanted to add complexity to your configuration, you could do some thing like
<Object name="default">
Auth..
<If defined $security>
NameTrans fn=map from="/" to="/path" name="reverse-proxy-/"
</If>
</Object>
<Object name="reverse-proxy-/">
Route...
</Object>

Need in depth knowledge about Certficate request and install for Reverse proxy and CAS role

Hi,
I have few confusions about Exchange 2010/13 certificate request and install. As per my understanding best practise is to assign public CA certificate to Reverse proxy and Local CA certificate to CAS servers but need to know that what should be the format
of certificate request? Do we need to order public certificate just for mail.domain.com and add SAN for other web services URLs and is it required to add CAS array and server names to this certificate ? In what case we will add server names and what will happen
if we don't add in it ? How the outlook clients connecting from internet will be using this certificate? I have very limited knowledge in certificates and it always pisses me off. Please help me with explanations and articles. I tried to google and gone through
many articles but didn't get a fair idea. Thanks in advacnce. :)

Hi,
Here are my answers you can refer to:
1. Use the New-ExchangeCertificate cmdlet to generate a new certificate request:
New-Exchangecertificate -domainname mail.domain.com, autodiscover.domain.com -generaterequest:$true -keysize 1024 -path "c:\Certificates\xxxx.req” -privatekeyexportable:$true –subjectname "c=US o=domain.com, CN=server.domain.com"
2. CAS array name doesn’t need to be added in the certificate:
http://blogs.technet.com/b/exchange/archive/2012/03/23/demystifying-the-cas-array-object-part-1.aspx
3. It depends on the situation that you configured to add the server name.
4. Outlook clients use certificate for authentication.
If you have any question, please feel free to let me know.
Thanks,
Angela Shi
TechNet Community Support

Reverse Proxy and Load Balancer for SMP 2.3 and Agentry Application

Hi Expert,
I'm putting in place a mobile solution composed by SMP 2.3 SPS 4 and SAP ECC 6.0. In the SMP 2.3 I created the agentry server and I have deployed my agentry application.
My SMP/Agentry infrastructure is composed by two servers therefore I need a load balancer for balance the load into the several servers. Furthermore I need to use a reverse proxy in my DMZ zone.
Based on what indicated in the SAP note "1904213 - SAP Mobile Platform Server Release Information" the Apache Reverse Proxy is not supported for Agentry clients. Agentry uses nginx for Reverse Proxy.
I also found the following document How-to-Guide for Reverse Proxy and Load Balancing in SAP Mobile Platform 3.x that explain how to set-up a reverse proxy and load balancer with nginx and apache.
Both the SAP note and the HOW to document are refereed to SMP 3.0 and not to SMP 2.3.
I would know if the NGINX must be used also for SMP 2.3.
Any suggestion/information is appreciated.
Thanks in advance
g.

Please see Agentry Network Landscapes

Apache reverse proxy and SSL termination

Hi Guru's
Can anyone tell me, how to do SSL termination at apache reverse proxy. I am using apache reverse proxy for accesing portal from internet. Apache is configured for SSL and portal is NON SSL.
I am using header variable login module in portal. i wanted to terminate SSL at apache reverse proxy and then all traffic after that should be clear text.
should i maitain any property. is there any documentation for it.
Please help me
Tom

The majority of the work here is around configuring your Web Dispatcher and Apache Reverse proxy. The work on the portal is straight forward enabling of SSL.
You can follow http://help.sap.com/saphelp_nw2004s/helpdata/en/f1/2de3be0382df45a398d3f9fb86a36a/frameset.htm for setting this up.
what level I need to configure SSL and how do I proceed in both scenarios?
Your question itself says where you need SSL. SSL is required where ever you need HTTPS communication.
how do I proceed in both scenarios?
From a portal perspective, the configuration should remain the same.
Do I have to install SSL at portal, web dispatcher or at Apache level?
SSL needs to be configured at all the 3 levels if you are looking at end to end SSL implementation.
See the following for possible SSL implementation options:
http://help.sap.com/saphelp_nw04/helpdata/en/d8/a922d7f45f11d5996e00508b5d5211/frameset.htm
https://cw.sdn.sap.com/cw/docs/DOC-115509
Will SSL termination work for scenario 2?
Yes this should work - see http://help.sap.com/saphelp_nw2004s/helpdata/en/36/fd39eacf4cde4a8fe32d7f29b3db16/frameset.htm
However in case of SSL Termination, the request to your portal from the web dispatcher will be sent as HTTP.
I would recommend you to take a step by step (backward approach).
First, enable SSL on your portal and make sure it works - going directly to the server.
Then, you can introduce the Web Dispatcher - and test if every thing works going through the web dispatcher.
Finally - you can test the end to end flow - with your Reverse proxy involved.
- Shanti

Web Dispatcher - Reverse Proxy and Load Balancing

I'm finding limited docs on Web Dispatcher with regard to reverse proxy and load balancing. Are you aware of some recent presentations or docs in this area? The info on help.sap.com is not what I'm looking for.
Thanks.

Hi,
best thing is that you look at your scenarios and test the web dispatcher against each of it, like:
- SSL
- Portal only
- Web Dynpro ABAP / Java
- BSP
- Different backend systems like SRM, MDM
- Several backends with 1 Web Dispatcher
After getting a list of use cases that you can test quite easily (installation of Web Dispatcher is done fast and can be done on a local PC), you can contact SAP Support and ask them about the specific problems and questions you encountered. This way, you'll get the official answer, sometimes they will even inform you about "secret" parameters and options.
As of the reverse proxy functionality: there are several version of Web Dispatcher available that differ from the functionality offered. The latest version - 7.2 - is the one that offers the most, i.e. allows you to create rewrite rules like Apache.
SAP Note 908097 - SAP Web Dispatcher: Released releases and applying patches
br,
Tobias

Reverse proxy and iWS 6.1 SP2?

Hey all,
i have 2 questions.
Can i use reverse proxy (and pass proxy) with iWS 6.1 SP2?
How must i configure the webserver to use this?
I need the following thing:
Client called https://server111.de/XXXXTruePassApp/ ---> Proxy get Data from https://server222.de/XXXXTruePassAppProxy/
Under Apache looks like that with mod_proxy:
ProxyPass /eCaSSTruePassApp/ https://server222.de/XXXXTruePassAppProxy/
ProxyPassReverse /eCaSSTruePassApp/ https://server222.de/XXXXTruePassAppProxy/
Thanks for help.
Greets Chmeee-de

Chmeee-de, I really don't think you should be using Sun ONE Web Server 6.1SP2. That version has known security vulnerabilities. Please consider applying the latest service pack, 6.1SP7.
Have you downloaded the Reverse Proxy Plugin? Have you tried reading the Reverse Proxy Plugin release notes? The release notes for Reverse Proxy Plugin 6.1SP7 are at http://docs.sun.com/app/docs/doc/820-0262/6nc0vpnc2?a=view.
Once you have the plugin installed and have edited the magnus.conf configuration file according to the release notes, you can add the following line immediately below the <Object name="default"> line in the obj.conf configuration file:NameTrans fn="assign-name" from="/XXXXTruePassApp/*" name="XXXXTruePassApp"This line indicates that requests for /XXXXTruePassApp/* should be serviced by an object named XXXXTruePassApp.
You can then create an object named XXXXTruePassApp by adding the following to the bottom of the obj.conf configuration file:<Object name="XXXXTruePassApp">
Service fn="service-passthrough" servers="https://server222.de"
</Object>

Arrowpoint Cookies, Reverse Proxy and Multiplexed Client Requests

Hi,
I have a reverse proxy which is performing SSL offload and making backend connections to two web servers. Between the reverse proxy and the two webservers, a CSS is in place to load balance between the web servers. There is a requirement for session stickiness on the web servers and since client IP details are lost through the reverse proxy I have used the arrowpoint-cookie method to load balance connections.
However, the reverse proxy seems to make only a handful of connections to the servers compared to the number incoming client connections and we have noticed that stickiness is broken. Now, I would assume this is correct if arrowpoint-cookie makes a load balancing based on the first HTTP get in a tcp stream and not on a per transaction basis AND our reverse proxy is multiplexing client requests. However, I can not convince myself of how the arrowpoint-cookie method actually works.
I wondered if anyone had any insight on this or had experienced similar issues with arrowpoint cookies?

Hi Gilles,
I have implemented this today, and we are still seeing issues with requests hitting the wrong server.
A bit more info, the reverse proxy is an AXG Web Aopplication Firewall. I have been looking at this and am considering disabling connection re-use on here.
However I am also wondering if this might be to do with the flow timeout multiplier I am using which is 5 (80 seconds). Perhaps this is too low?
Thanks, David.

Ask the Experts: Single Sign-On with Cisco WebEx Meetings Server, Internet Reverse Proxy, and Enterprise License Manager Solutions

With Arun Kumar
Welcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to learn and ask questions about Single Sign-On (SSO) with Cisco WebEx Meetings Server (Cisco WMS), Internet Reverse Proxy (IRP), and Enterprise License Manager (ELM) solutions.
SSO standards such as Security Assertion Markup Language (SAML) 2.0 provide secure mechanisms for passing credentials and related information between different websites that have their own authorization and authentication systems. SSO enables simplified user authentication and management.
IRP provides public access, enabling users to host or attend meetings from the Internet and mobile devices. Although IRP is optional, Cisco encourages its use because it provides a better user experience for your mobile workforce.
Example question topics include:
SSO profiles and SAML 2.0 Identity providers (IdPs) supported in Cisco WMS
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Arun Kumar is a team lead in the San Jose Conferencing Technical Assistance Center. He has over eight years of experience in conferencing technology and specializes in Cisco Unified Meeting Place Express and Cisco WebEx Meeting Server. He joined Cisco in 2010 as an escalation engineer for the Cisco Telepresence group. Before joining Cisco he worked for the UK's third-largest internet service provider Supanet on VoIP technology and the *Nix domain. Kumar holds a master of science degree in computer science from Sikkim Manipal University in India, and he holds CCIE (Voice) and VMware Certified Professional certifications.
Remember to use the rating system to let Arun know if you have received an adequate response.
Arun might not be able to answer each question because of the volume expected during this event. Remember that you can continue the conversation on the Collaboration, Voice, and Video community Other Subjects subcommunity shortly after the event. This event lasts through Monday May 17, 2013. Visit this forum often to view responses to your questions and the questions of other Cisco Support Community members.

Hello Mobile Service,
CWMS and Jabber integrations:
http://www.cisco.com/en/US/docs/voice_ip_comm/jabber/Windows/9_1/JABW_BK_E4CC9599_00_environment-configuration-guide_chapter_01.html#JABW_TK_SF2ED5E1_00
In above link start from section: Set Up Cisco WebEx Meetings Server on Cisco Unified Presence
then move to section: Add Cisco WebEx Meetings Server to a Profile
Once done, move to section: Specify Conferencing Credentials in the Client side. You will see above server already listed there, just go ahead and enter your username and password (pleae make sure this user already exists on your CWMS) and accept any certificate/s if presented. Jabber Integration is done and you can start testing the same.
Attached CWMS - AFDS integration doc.
Please let me know if any furhter question.
Thanks, Arun

What is a reverse proxy and when is it used ?

Dear SDN Community,
Can some one throw light on the reverse proxy concept and in which scenarios it is used.
Thanks!
Surya.

Typically Reverse Proxy is used in an Extranet setup.
It will receive all the request from users (internet) and forward the requests to specific application servers based on rules you define.
As the name suggests its the opposite of Forward proxy. You use forward proxies for outbound traffic (intranet to internet) and reverse proxies for inbound traffic (internet to extranet).
You typically use reverse proxies to avoid exposing your application servers on the internet.
As our colleague as suggested you can get more information on wiki or reverse proxy vendors libe APACHE, IIS, BLUECOAT...
Hope this helps.
Thanks and Regards,
Prasanna Krishnamurthy.

SJSWS7 Reverse Proxy and SharePoint

Hi,
Is it possible to reverse proxy a SharePoint/WSS application through SJSWS7 Reverse Proxy?
Are there any issues in doing so? How do we take care the NTLM authentication?
Any pointers greatly appreciated.
Thanks,
Esselle
Note: Apologies if this had been already answered in this forum. I tried to run a search but did not find any topics.

Yes, share point can be the origin server and I don't think there is any specific setting that needs to be done within reverse proxy for this. Just treat this as regular origin server and follow our reverse proxy docs or blogs and that is all I believe it should take.
However, we do not (yet) support NTLM authentication in reverse proxy mode . However, we do support Kerberos within web server 7 and that hopefully should allow u to authenticate in the web server 7 land. however,
I have filed a bug to track this issue (reverse proxy + NTLM authentication)
- Sriram

Single Reverse Proxy and multiple Office Web App Servers

Hi all,
I have recently installed a new office web apps server pool in my new location and configured it in my Lync topology as well.
I have a single Reverse Proxy (IIS ARR). Inside my Reverse Proxy I have created a new web farm for my new web apps server. The configuration of old web apps server. I have copied the settings from my old web app's web
farm in IIS including its Inbound rule regular expression.
Now when I try to upload a powerpoint as an external guest hoping to hit my new web apps server, my reverse proxy tries to hit my old office web apps server and no traffic is sent from reverse proxy to new web apps.
my reverse proxy shows the health of the new farm as healthy.
should the inbound rules be different for these farms in reverse proxy?
Any suggestions are welcomed.
Thanks,

Hi,
In addition to Luca's comment in order to determine if the farm is actually working correctly in the first instance, did you disable or remove the old server farm?
Can you also confirm that there are no static routes in place on the IIS ARR box?
Kind regards
Ben
Note: If you find a post informative, please mark it so using the arrow to the left. If it answers a question you've asked, please mark the thread as answered to aid others when they're looking for solutions to similar problems or queries.

Reverse Proxy and OWA

Hi,
Setup:
3 CAS servers - Exchange 2010
1 IIS ARR reverse proxy
I followed these two
1 2 write-ups on how to setup Exchange 2010 OWA to use IIS ARR as a reverse proxy. The problem I'm having is
when all three servers are online in the server farm OWA doesn't work properly. You can log in fine, but it appears to not load fully and you can't click on anything (eg Calendar, emails, forward, reply, etc). If I were to take all the servers offline except
for one (doesn't matter which one), OWA functions normally.
Since some users also access OWA internally I have configured IIS on each CAS server to redirect to HTTPS and the OWA virtual directoy. I don't think this is causing the problem, but I thought I should mention it.
I followed the articles exactly. I'm not sure what could be causing the problem.
Thanks

Hi,
According to your description, there may be some problem on the configuration of your IIS ARR.
Thus, let’s troubleshoot ARR using Failed Request Tracing Rules to find the root cause.
For the detail steps, please refer to the following article:
http://www.iis.net/learn/troubleshoot/using-failed-request-tracing/using-failed-request-tracing-rules-to-troubleshoot-application-request-routing-arr
And we can also check if the URL rewrite rules are working as expected:
For more steps, please refer to the partition named Verifying if the above rules are working as expected in the reference below:
http://blogs.technet.com/b/exchange/archive/2013/08/05/part-3-reverse-proxy-for-exchange-server-2013-using-iis-arr.aspx
Thanks,
Angela
Angela Shi
TechNet Community Support

Proxy Listener, Reverse Proxy and Security

I am wondering if someone can help me regarding security. I added an additional proxy listener to do reverse proxy. Unfortunately I started to notice my bandwidth usage skyrocket - outside users were using me as a proxy. How do I limit a proxy listener that I am using externally to only process requests for my internal web servers? Thank you...
Joe

Hi
Is there a way to authenticate a database user without creating
a connection in a java application container like geronimo?If you want that the database engine authenticates the users, you have to connect to it. If you really want to do it before attempting a connection, I see no other possibility than to let the application do the authentication. In such a situation it is common to use a technical user for the database. If specific DB-features like VPD are needed, then you should use a proxy user instead. But, once more, the authentication should be performed from the application.
HTH
Chris

Define Reverse Proxy and Deffered Authentication Schema

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