Outlook RPC over HTTP causes ASA5510 to shun connection

Posted on 2011-03-10
Last Modified: 2012-05-11
We are experincing a peculiar issue with our ASA5510. It acts like it is shunning a remote connection when attampting to make an RPC via HTTP request from an Outlook client. If VPN is connected and we access Outlook Anywhere via LAN address we have no issues.

What leads us to believe we are being shunned is the inability to connect to VPN while outlook is open and attempting its remote connection. If outlook is closed then we can immedietly we can make a VPN connection.

We have disabled threat detection on our ASA in an attempt to pin point this issue. But even when it is enabled the shun does not appear when querying the ASA for shunned hosts.
Question by:hbrumfield
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
LVL 26

Expert Comment

ID: 35108890
Note sure if there is anything called IRULE on this device...

Related links:

SOL7869: The BIG-IP ASM does not support connections using Remote Procedure Call over HTTP 

Author Comment

ID: 35111730
This links appear to be specific to f5 gear, are you asking if the cisco asa has an irule policy?
LVL 26

Expert Comment

ID: 35131282
the main picture is to create\configure the sticky session on the cisco device.

Accepted Solution

hbrumfield earned 0 total points
ID: 36241404
We determined this to be an issue with our Barracuda web filter sitting in path to the firewall. A firmware update from Barracuda resolved.

Author Closing Comment

ID: 36268210
Discovered solution by removing web filter from in path and testing.

Featured Post

Office 365 Training for Admins - 7 Day Trial

Learn how to provision tenants, synchronize on-premise Active Directory, implement Single Sign-On, customize Office deployment, and protect your organization with eDiscovery and DLP policies.  Only from Platform Scholar.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

You need to know the location of the Office templates folder, so that when you create new templates, they are saved to that location, and thus are available for selection when creating new documents.  The steps to find the Templates folder path are …
There’s a movement in Information Technology (IT), and while it’s hard to define, it is gaining momentum. Some call it “stream-lined IT;” others call it “thin-model IT.”
To show how to generate a certificate request in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.:  First we need to log into the Exchange Admin Center. Navigate to the Servers >> Certificates…
Many of my clients call in with monstrous Gmail overloading issues with Outlook. A quick tip is to turn off the All Mail and Important folders from synching. Here is a quick video I made to show you how to turn off these and other folders in Gmail s…

705 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question