Apache - Redirect based on IP tables

Some days ago I received the question of a customer, if it´s possible to use a Reverse Proxy to either redirect to an internal or an external server based on IP ranges. After some searches and help from Martin Leyrer ( thanks a lot for your suggestions ), I figured out the complete configuration file for this special customer.

If you need some URL redirection/rewriting, feel free to use this code ( suggestions for better ways to accomplish this request are highly welcome ):

<VirtualHost ip-address:80>

 # Redirect all requests to SSL
 Redirect permanent /

 ErrorLog /var/www/virtual/logs/
 CustomLog /var/www/virtual/logs/ common

<VirtualHost ip-address:443>
 SSLEngine On
 SSLProxyEngine On
 ProxyVia On
 ProxyRequests Off
 ProxyPreserveHost On
 ProxyErrorOverride On
 RewriteEngine On

 # Added due to HTTP 502 errors:
 # ht…

Sync database quotas between servers

Today I again had the issue, that Database Quotas have not been synced between IBM Domino Cluster servers. After some search, I found the following post:

I did some modifications in the code and ran the agent with the Server ID and scheduled the agent one time a day... So far it´s looking fine...

You can download the database here:

IBM Connections 5.5 CR3 upgrade issue

Today I installed Connections 5.5 CR3 at customer site and followed the required steps here. I also followed the steps for creating the requested Dynacache for the Rich Text Editor:

As mentioned I created the Dynacache just for the RTE-Cluster and figured out, that this led to problems for all single cluster member. 

So I removed the setting for the RTE-Cluster and added it for the complete cell:

After a restart of all cluster servers everything was fine again.

IBM Connections Engagement Center V6.0

IBM announced the new IBM Connections Engagement Center V6.0 including the following functions:

Increases employee engagement, communications, and collaboration by transforming the IBM Connections environment into a digital workplace hubProvides employees with personalized, easy access to content and resources, such as corporate news, relevant content, links to important resources, files, and events, with content drawn from Connections features already being used, such as blogs and wikis, as well as third-party content or applicationsEnables internal communications professionals to integrate top-down communications with peer-to-peer collaboration, making internal communications more collaborative and engaging.You can read the complete announcement here:

Performance problems on Apache Reverse Proxy

Yesterday I had massive performance troubles after going online with an Apache Reverse Proxy running on CentOS 6.9 for IBM Notes Traveler.

The customer has about 1.250 users and approx. 1.650 devices.

After some investigation and a great site, where the performance parameters are described very good:

( )

I figured out, that the default configuration of the HTTP server was causing this issues, because the settings are much too low/high for this amount of devices. I did some modifications in the httpd.conf and now it´s working fine - feel free to use them:

# Timeout: The number of seconds before receives and sends time out.
# Default Value: Timeout 60
New Value: Timeout 10

# KeepAlive: Whether or not to allow persistent connections (more than
# one request per connection). Set to "Off" to deactivate.
# Default Value: KeepAlive Off
New Value: KeepAlive On

# MaxKeepAliveRequests: The maximum number…

Resolve synchronisation issues after upgrade to IBM Notes Traveler

IBM Notes Traveler has the new feature to access the users mail server with the same rights as the user. But if you forget to add the IBM Notes Traveler server to the field "Trusted Servers" in the server document of the Mail Server, you receive the following errors:

An exception occurred when opening database <MailServerPath>/user.nsf using user shortname CN=John Doe /O=IBM in order to retrieve changed documents. Exception information: Throw: TASK_PROFILE_OPEN_DB

*** Content Adapter Exception ***ERROR 23 (ERR_DATABASE_ERROR)--- Debug Info ------------:Database cannot be opened with status of 0x17eb. Server=<MailServerPath>database=mail/user.nsf
INFO Mntr-0a78[Master]John Doe dna.cpp.jniDoesDatabaseExist#8427 Internal Error: Debug Data: Could not open Database='mail/jdoe.nsf' on server=<MailServer>' PathName='<MailFilePath>' for user 'CN=John Doe /O=IBM'. Error(17eb)=You are not listed as a trusted server 


Ephox 2.2 delivers the latest rich text editing capabilities for IBM Connections

Ephox 2.2 provides the latest rich text editing capabilities seamlessly integrated into IBM Connections™. Robust and reliable performance across browser platforms and devices sets Ephox apart from other editors. Ephox 2.2 is available for new users of Connections V5.5 and V6.0 as well as users who have active subscriptions.

Features of 2.2

Rich content embedding when a URL is typed or pasted on a blank line. Links to rich content are replaced with embedded content when using the new Link Embed option in SDK with functionality preserved. Supported media:Social media and other sharable content (for example, YouTube, Instagram, Flickr).Image URLs for JGP, PNG, and GIF files are converted to images.Video URLs for MP4 files are converted to videos.Other content links shown as a summary card.Nested tables are now supported.Table cells can now be split into columns or rows.Multiple columns or rows can be deleted at the same time.Tab and sh…