IC WebClient - Apache Reverse Proxy

Hi,
We are working on CRM 5.0. I have configured the apache reverse proxy to work with EP7.0. All the iviews from the portal are working fine except the IC webclient. When the user clicks on the IC Webclient tab, it displays a blank window as 'Loading' and doesn't do anything. At the left bottom of the screen, i do see a javascript error. Double click on the error opens a window with the error description as 'Invalid argument' and the url is
http://crq.vm.com/sap(bD1lbiZjPTAxMCZkPW1pbiZpPTEmcz1TSUQlM2FBTk9OJTNhc2FwY3JxMDBfQ1JRXzAwJTNhdlEtSDRHeFU1R0d6WGtUZ0daTjE3cmtrWTZqSjVFUEZRSWljWWc4cS1BVFQ=)/bc/bsp/sap/ic_base/default.htm?sap-tray-type=PLAIN&sap-tray-padding=X&sap_ep_version=7%2e00%2e200707191011&sap_ep_baseurl=http%3a%2f%2fepq%2evm%2ecom%3a80%2firj%2fportal
Please let me know if anyone knows how to resolve this issue.
Thanks,
VSingh!!

Did you resolve this issue? There is this note.
Note 651435 - Cannot run applets on Sun JVM 1.4.x with proxy server

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Problem with Apache reverse proxy after applying SP13 NW

Hello,
we have a NW04 EP Portal and a Apache reverse proxy in the DMZ. After applying SP 13 for the portal we get the following error from the reverse proxy:
Proxy Error
The proxy server received an invalid response from an upstream server.
The proxy server could not handle the request GET /irj/.
Reason: Error reading from remote server
Apache/2.0.52 (Win32) mod_ssl/2.0.52 OpenSSL/0.9.7e Server at servername.company.de Port 443
Is is it possible, that there is a problem with sp13?
Best regards
Daniel Holstein

Hi Daniel,
ok I`ll try to find a solution in parallel and keep you up to date.
In the following my settings in case I missed something:
<VirtualHost test.firma.de:443>
SSLEngine on
SSLProxyEngine on
SSLCertificateFile /apache/keys/pac_ssl_qep_dmz_server.crt
SSLCertificateKeyFile /apache/keys/pac_ssl_qep_dmz_server.key
ServerName test.firma.de:443
ServerAdmin [email protected]
LogLevel debug
ErrorLog logs/ssl_443_error
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Regards, Jens

Apache Reverse proxy with SSL

Hi,
I'm trying to install Apache Reverse proxy which will support both HTTP and HTTPS request.
<b>What do I need to activate to support the HTTPS requests?</b>
I installed Apache 2.0.53 Released and trying to activate the mod_ssl.
From Where can I get the mod_ssl.so?
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Do I need to use them in case I want to use HTTPs?
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Yael

Get the latest oppenssl compile it. before you compile apache, execute ./configure --help in the apache directory. It will give you the commands that you need to use to activate and deactivate various things in apache.
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./configure --with-layout=GNU --enable-proxy --enable-ssl --with-ssl=/usr/lo
cal/src/apachessl/openssl-0.9.7f/ --enable-vhost-alias --enable-rewrite --enable
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then make and make install.
hope it helps.
Jai

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

Apache Reverse Proxy

Hi
I have installed Apache Reverse Proxy to access my Portal and ECC6.
In the httpd config file , i have done the following settings.
<VirtualHost ipaddress:port>
ProxyPreserveHost On
ProxyPass /irj/ http://portalserver:50000/irj/
ProxyPassReverse /irj/ http://portalserver:50000/irj/
ProxyPass /eccdev/ http://eccserver:8000/eccdev/
ProxyPassReverse /eccdev/ http://eccserver:8000/eccdev/
</VirtualHost>
eccdev is external alias for the path
/sap/bc/gui/sap/its/webgui/
With this setting when i when a request is made for eccdev/
it takes me to the ecc6 login page.
when i enter the required information , it just clears the username password fields.
i checked that the username password are correctly entered.
what is the problem ?
Regards
Rajendra

Hi Darren ,
Thanks for the reply.
Our SSO between Portal and ECC6 works fine without Reverse Proxy.
If we access the Portal Through Reverse Proxy , when we navigate to any iViews say BSP iView , it asks for Username password. Once provided it works fine.
Second Scenario is Using Reverse Proxy to Directly access
SAP GUI . i.e without using Portal.
If i do not use Reverse Proxy , i can access my ECC6 webgui
through browser after providing the Login Details, but if i use Reverse Proxy then Even after providing the Login Details ,
the LogOn Box does not go and keeps asking for login details.
To summarize , i just want to acess the SAP GUI from Browser
using Reverse Proxy . I am able to do it without reverse Proxy .
Can you help ?

Apache Reverse Proxy: Domain problem

Hi,
I have a problem with Apache Reverse Proxy (Apache 2.2) and SAP Enterprise Portal 6.0.
I configured Apache as a Reverse Proxy Server (with SSL)so that the portal is accessible through the internet. Everything is working fine but the OWA integration doesn't work over the Reverse Proxy.
If I log on to <u>http://portalsrv.mydomain.xx:12345/irj</u> the OWA integration works fine with SSO and there is no problem with session management.
If I log on to <u>https://revproxy.mydomain.zz:1234/irj</u> and want to open Outlook I get the message that Session management doesn't work. However the other components like ESS work fine. Deactivating the DSM Logger is not a solution to this problem.
The Log tells me:
1.
Application domain 'mydomain.xx' differs from Portal domain 'mydomain.zz'.
Session Management will not work for Application 'abc.mydomain.xx'
2.
Application schema 'http' differs from Portal schema 'https'.
Session Management will not work for Application 'abc.mydomain.xx'
Is there a possibility to write a Rewrite-Rule in the Apache-Conf?
For instance:
https://abc.mydomain.xx --> http://abc.mydomain.zz
Does anybody made such a rule?
I hope anybody can help me with the problem.
Thank you

Hi Daniel,
ok I`ll try to find a solution in parallel and keep you up to date.
In the following my settings in case I missed something:
<VirtualHost test.firma.de:443>
SSLEngine on
SSLProxyEngine on
SSLCertificateFile /apache/keys/pac_ssl_qep_dmz_server.crt
SSLCertificateKeyFile /apache/keys/pac_ssl_qep_dmz_server.key
ServerName test.firma.de:443
ServerAdmin [email protected]
LogLevel debug
ErrorLog logs/ssl_443_error
CustomLog logs/ssl_443_access_log common
ProxyVia Off
ProxyPreserveHost On
ReWriteEngine on
ReWriteLogLevel 0
ReWriteLog logs//ssl_443_rewrite_http.log
ProxyPass / https://backend.firma.de:50001/
ProxyPassReverse / https://backend.firma.de:50001/
</VirtualHost>
Regards, Jens

Apache reverse proxy setting for access to Backend

Hi experts,
we have set up apache reverse proxy to make available our NW portal (and SRM functions)over the internet.
Our settings look something like this:
ProxyRequests Off
<VirtualHost *:80>
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     ProxyPreserveHost On
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RewriteEngine On
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</VirtualHost>
Problem:
when we access the portal from the internal network(either by using the internal URL or external URL) things work fine.
But we access the portal from internet, we are able to login to the portal and acess all webdynpro Java related applications.But when we try to acess the BSP/WD abap application running on a backend SRM system, we get 'host not found' message with the INTERNAL url of the SRM backend application displayed.
Do we need to expose the SRM backend to the outside world via reverse proxy as well?If yes,how?Do we need to change the system definitions in portal for that?
Any help in resolving this would be greatly appreciated.
regards,
Kiran

Hi,
Do we need to expose the SRM backend to the outside world via reverse proxy as well?If yes,how?Do we need to change the system definitions in portal for that?
Yes , you have to expose your backend system using reverse proxy ...
When user access the portal and when he clicks on BSP/WD , the URL get re-directed to backend system.
But , as your backend system is not expose on internet , you get an error as host not found.
So, to solve your problem you have to expose your backend system on internet. It is in general pratice to expose on internet.
Thanks
Anil

401 Unauthorized: Running portal behind an APACHE reverse proxy

Hello to all,
we've got following scenario:
www <-HTTPS-> APACHE (external SSL termination) <-HTTPS-> portal
If I call the internal URL (https://backend.xy.de:443/irj/portal) of the portal,
I'll be redirected to the logon servlet and logon to the portal application is possible.
Now we set up a APACHE reverse proxy in oder to access the portal from internet.
I've set up a virtual host:
<VirtualHost test.xy.de:443>
     <Location />
          ProxyPass https://backend.xy.de:443/
        ProxyPassReverse /
     </Location>
</VirtualHost test.xy.de:443>
But now if I call the portal application https://test.xy.de/irj/portal I get the following error:
Unauthorized
This server could not verify that you are authorized to access the document requested. Either you supplied the wrong credentials (e.g., bad password), or your browser doesn't understand how to supply the credentials required.
Any idea how to fix this?
Regards Christian

Hello Tobias,
I have adapted your idea, but without success.
I've checked the cookies. No cookies are delivered by the J2EE-Server.
HTTP-ResponseHeader contains following entries:
HTTP/1.1 401 Unauthorized
Date: Thu, 26 Jan 2012 08:31:55 GMT
WWW-Authenticate: Negotiate
Content-Length: 381
Keep-Alive: timeout=15, max=100
Connection: Keep-Alive
Content-Type: text/html; charset=iso-8859-1
But its a bit strange.
If I call url https://xy.de/index.html the start page will be displayed.
A log on to system information is possible, but if I try to open the nwa, I get the same error.
So I think this is a problem with the logon servlet. Sites with basic-authentication work.
Calling the logon servlet direct https://xy.de/logon/logonServlet I get the same error.
I don't think, there is a problem with the apache configuration.
If I change the ProxyPass directive to another J2EE server everything works fine.
There is only one difference between both system.
System 1 (error system) is a SAP Netweaver 7.01 SP10
The other system is a SAP Netweaver 7.02 SP 9
Regards Christian
Edited by: Christian Kaiser on Jan 26, 2012 9:53 AM

Configuring a Apache Reverse Proxy for OracleAS Portal and OracleAS Single

I'm trying to implement my Oracle Portal 10g Release 2 with a reverse proxy (Apache 2.2) as described in this link: http://download.oracle.com/docs/cd/B14099_19/core.1012/b13998/variants.htm#BEIFECEH without success. I have Oracle Portal, Oracle SSO,OID in the same domain and Apache Reverse Proxy in another domain. Has anyone had success using OracleAS Portal with a reverse proxy?

First of all i'm trying to configure a reverse proxy only for Ora SSO (infra tier). Here is what i already do:
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http:/proxy.mycompany.com:80
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ProxyPassInterpolateEnv On
ProxyPass / http:/portal.tech.everett.it:7777/
ProxyPassReverse / http:/portal.tech.everett.it:7777/
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http:/portal.mycompany.com:7777
Here are the steps i already do:
1- CONFIG OID
create an ldif file called setdasurl.ldif and insert as follow:
dn:cn=OperationURLs,cn=DAS,cn=Products,cn=OracleContext
changetype: modify
replace: orcldasurlbase
orcldasurlbase: http:/proxy.mycompany.com/
then do ldapmodify as follow:
ldapmodify -x -h portal.mycompany.com -p 3060 -D "cn=orcladmin" -w password1 -v -f setdasurl.ldif
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export ORACLE_HOME=/home/gentjan/product/10.1.2/OracleAS/infra/
2.1-config Apache config of ORA SSO
vi $ORACLE_HOME/Apache/Apache/conf/httpd.conf
change from:
ServerName portal.mycompany.com
Port 7777
KeepAlive On
to:
ServerName proxy.mycompany.com
Port 80
KeepAlive Off
and add at the end of httpd.conf
RewriteEngine On
RewriteOptions inherit
2.2- update DCM Repository (as root)
*$ORACLE_HOME/dcm/bin/dcmctl updateconfig -ct HTTP_Server -v -d*
2.3- modify SSO Server Home URL to reverse proxy hostname and port (as root)
*$ORACLE_HOME/sso/bin/ssocfg.sh http proxy.mycompany.com 80*
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Open the ORACLE_HOME/sysman/emd/targets.xml file and locate the target type oracle_sso_server.
vi $ORACLE_HOME/sysman/emd/targets.xml
Update the HTTPMachine and HTTPPort attributes with the proxy server host and port attributes that were passed to ssocfg. For example:
Property NAME="HTTPMachine" VALUE="proxy.mycompany.com"
Property NAME="HTTPPort" VALUE="80"
Property NAME="HTTPProtocol" VALUE="http"
Save and close the file.
Reload the Application Server Control Console by issuing this command (as gentjan):
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2.5- Re-register mod_osso on SSO Middle-tier with reverse proxy hostname and port
some needed permissions
chmod -R 775 /home/gentjan/product/10.1.2/OracleAS/infra/dcm/
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*$ORACLE_HOME/dcm/bin/dcmctl updateconfig -ct HTTP_Server -v -d*
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*$ORACLE_HOME/opmn/bin/opmnctl restartproc process-type=HTTP_Server*
*$ORACLE_HOME/opmn/bin/opmnctl restartproc process-type=OC4J_SECURITY*
After this modifications my reverse proxy is ok.
I can access to http:/proxy.mycompany.com:80 and this redirect me to Oracle Application Server Welcome page.
If i try http:/proxy.mycompany.com/pls/orasso/orasso.home, i can view the SSO Server Home page.
The problem that i find is when i click to Login page for Oracle SSO.
I have the following error:
Forbidden You don't have permission to access /pls/orasso/ORASSO.wwsec_app_priv.login on this server.
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Setting apache reverse proxy for EP6SP2

Hi friends,
I want to set apache reverse proxy for EP6SP2. But after doing the following changes, it is showing the SAP J2EE Engine documentation page.
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ProxyRequests Off
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Tags edited by: Michael Appleby

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OCS on a single computer / DMZ using Apache reverse proxy

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Hello Andreas and Christoph!
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Hasan Jamal Siddiqui(MCTS,MCPD,ITIL@V3),Sharepoint and EPM Consultant,TCS
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| Twitter

Thanks Sebastian,
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Hasan Jamal Siddiqui(MCTS,MCPD,ITIL@V3),Sharepoint and EPM Consultant,TCS
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Thanks for the replies.
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Webdynpro application not functioning from Apache Reverse Proxy

Hi Experts,
We are currently working on custom webdynpro application, which needs to be exposed to Internet. We are using Apache HTTP Server as a reverse proxy.
We canable to access URL, but no images are getting displayed and also the application not functioning when we click any button/links.
Below is the HTTPD file configuration.
ProxyPass /esampleApp http://hostname:port/webdynpro/dispatcher/local/esampUI/ESamplingApp
ProxyPassReverse /esampleApp http://hostname:port/webdynpro/dispatcher/local/esampUI/ESamplingApp
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http://portalhostname:port/webdynpro/resources/local/esampUI/Components/esampling.ui.ESamplingComp/logo.gif
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http://Apachehostname:port/resources/local/esampUI/Components/esampling.ui.ESamplingComp/logo.gif
Please suggest.
Thanks
Aravind

We also had the same issue, but the problem was that instead of http https was getting called.
This has to do with 2 settings:
1. Check the reverse proxy re-write URL's again. Note that there will be 2-3 entries one for webdynpro as well.
2. Open your system definintion in system admin-sys configuration adn check the WAS settings. this should point to the FQDN of the proxy server and not to the R3 server.
ankur

IC WebClient - Apache Reverse Proxy

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