Showing posts with label service. Show all posts
Showing posts with label service. Show all posts
Friday, April 21, 2017
IBM builds a service to help you know who to trust in the cloud
IBM builds a service to help you know who to trust in the cloud
Networking experts create an experimental system to offer better security in the promiscuous world of the cloud.
Today even the simplest web app can rely on a diverse mix of online services.
These services support a range of crucial functions in modern applications: Facebook for authentication, Box for storage, Twilio for messaging, Square for payments, Google AdSense for advertising and more.
Moving further down the software stack, it is also becoming increasingly common to weave together apps using even smaller on-demand components, such as Amazon ElastiCache or the cloud-based graph database GrapheneDB.
IBM predicts this trend of gluing together online services into "mesh applications" will accelerate as the number of cloud platforms continues to increase, growing beyond Amazon Web Services, Microsoft Azure, Google Cloud Platform, Heroku, IBM BlueMix, CloudFoundry and others available today.
The challenge for firms is that every time they bolt a new cloud-based service onto an app the company is trusting data and the smooth running of their software to a potentially unknown third party.
A new security model for the cloud
In a world where many different and sometimes geographically dispersed services regularly share data, networking experts say a new approach to application security is needed.
"Despite the shift in how applications are being disaggregated, the management of security between services and tenants remains largely the same: one focused on a perimeter defense with a largely static security configuration," write researchers from IBM Watson Research Center, the University of Colorado and Princeton University.
"While isolation enables tenants to reason about their perimeter, perimeter defense is widely considered insufficient."
With the many different cloud services that make up these applications regularly swapping data and commands, attacks on apps can be hard to detect, the researchers argue, as criminals can "rely on their relative anonymity to bypass the perimeter".
In such complex systems, software-defined networking (SDN) and network function virtualization (NFV) are increasingly being used to enforce security policies on traffic as it flows over the network.
While the programmable infrastructures that SDN and NFV enable can boost security for these mesh applications, the researchers believe these automated systems need better guidance.
To help address the issue of knowing which cloud services can be trusted, IBM and its research partners have designed an experimental system called Seit, which means reputation in Arabic.
Seit is designed to be integrated into cloud management systems to help track the reputation of different services.
Seit allows cloud-based services to interface with its reputation manager, which acts as a repository for ratings assigned to cloud-based services or tenants. These ratings are based on the past behaviour of these services and are automatically generated from alerts, events, and status updates from the cloud infrastructure components these services rely on, such as firewalls, load balancers and network controllers.
When different online services are preparing to interact, they query Seit to discover each others crowd-sourced reputation. Using this information each service can then decide how, and if, they should interact, based on their respective reputations and expectations.
To allow cloud services to engage in this reputation sharing, Seit provides a framework that enables a software shim to be created around cloud infrastructure components. This shim allows cloud services and tenants to interface with Seits reputation manager.
The researchers say Seit makes it easier to isolate cloud services and tenants that are likely to cause problems, as well as optimizing communication between services.
Because reputations are updated each time cloud services or tenants interact with each other, Seit also proved able to warn about malicious and problematic behaviour as it emerged. For example, in a recreation of a denial of service (DoS) attack similar to that launched from AWS EC2 instances in 2014, Seit lowered the reputation of the compromised virtual machines spewing out large amounts of DoS traffic, to the point where the instances driving the attack were isolated.
The researchers provide various examples of how they used Seit - including creating an SDN controller that blocked or screened network traffic from virtual machines with a low reputation, allowing a cloud service broker to filter services offered on CloudFoundry by reputation and building a reputation-guided load balancer.
"Using our emulated environment, we show that Seit can provide improved security by isolating malicious tenants, reduced costs by adapting the infrastructure without compromising security, and increased revenues for high quality service providers by enabling reputation to impact discovery," the researchers claim in the paper.
IBM and its partners have trialled Seit with various cloud and network components, including the Floodlight SDN controller, CloudFoundry, the HAProxy load balancer, the Snort intrusion detection system and the Nagios monitoring system.
In future they plan to integrate more components with Seit, improve the systems performance and study scalability challenges when managing a large number of components and tenants spread across autonomous clouds in different locations.
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Friday, October 28, 2016
how to fix Weather gadget could not connect to service
how to fix Weather gadget could not connect to service
Issue: Windows Vista and Windows 7 sometimes have problem with Windows Live Gadget as it does not work and gives error message- " Could not connect to Service". When the weather gadget stops working the currency gadget also does not work.
As per the Microsofts support website weather gadget may not work if the following conditions are true:
When the Weather Gadget stops working or having some issue it will show an exclamation mark next to it and also shows message "Cannot connect to service".
And when you see error message Weather gadget cannot connect to service, you might wanna check after changing the location to see its weather.So you would click on the settings button on weather gadget and then type the name of the location.But if you try to change the location when weather gadget stops working you would get error message "Location not found".
In order to fix Weather Gadget I did a lots of research and found different misleading solution which actually does not fix this issue rather waste your time but just to let you know I am first mentioning what all I have found as claiming problem solved using these steps.Please make a note that none of these ever worked.As per the Microsofts support website weather gadget may not work if the following conditions are true:
- System Restore was performed.
- User Account Control (UAC) is turned on.
- The scannow command finds missing or corrupted system files.
When the Weather Gadget stops working or having some issue it will show an exclamation mark next to it and also shows message "Cannot connect to service".
 |
| Weather Gadget stops working |
And when you see error message Weather gadget cannot connect to service, you might wanna check after changing the location to see its weather.So you would click on the settings button on weather gadget and then type the name of the location.But if you try to change the location when weather gadget stops working you would get error message "Location not found".
 |
| Weather gadget stops working |
How to fix Weather gadget stops working issue?
1. Start - type in Search box - COMMAND find at top of list- RIGHT CLICK - RUN AS ADMIN
sfc /scannow
2. Click on start and type regedit
Go to HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionSidebarSettings
On the right window create A New DWORD(32 Bit Value) with name “AllowElevatedProcess”
and set value as “1”.
Close Registry Editor
Restart
3. Start the command prompt by choosing run as administrator and type the following command lines.
cd "%programfiles%Windows Sidebar"
regsvr.exe wlsrvc.dll
4. Try to re-register concerned dll files of Windows gadget when gadget stops working.
(a).Go to Start and under search type in CMD then Right Click on it and click on Run as administrator.
(b). Then type these 3 commands one by one and hit Enter:
regsvr32 msxml3.dll
regsvr32 scrrun.dll
regsvr32 jscript.dll
(c). Then reboot your Windows PC and test it.
Tried all the above mentioned steps.It never helped me.Weather gadget still does not work and shows can not connect to service.One of the solutions suggested to rather download another similar apps named Pro Weather Gadget from the following location.
ProWeather Gadget -
http://gallery.live.com/liveItemDetail.aspx?li=b14d68bb-71ee-40cd-8cf5-c95b63503d00bt=1pl=1
But let me tell you just one simple way that worked instantly and fixed the problems.
First Method.
Step 1. Go to "C:UsersUSERNAMEAppDataLocalMicrosoftWindows LiveServicesCache", open "Config.xml" (Right Mouse Click -> Edit) and save it (File -> Save) without doing any changes. After 10-20 seconds restart the gadget!
Second Method
A) Copy the following files and folder from a Windows 7 machine with a working stock weather gadget to a flash drive or network file share:
1. %localappdata%affected userlocalmicrosoftwindowswindows liveservicescacheconfig.xml (just copy the file)
2. %localappdata%affected userlocalmicrosoftwindowswindows sidebarcache168522d5-1082-4df2-b2f6-9185c31f9472 (copy entire folder which should contain one or more xml files)
3. %localappdata%affected userlocalmicrosoftwindowswindows sidebarsettings.ini (just copy the file)
B) Paste (OVERWRITE if ask) the copied folder and files into the same locations on the machine whose stock weather gadget is not working.
C) Drag the weather gadget back out and this time it should be working.
 |
| Weather Gadget |
Third Method
Sometime you might receive an error message “Desktop gadget are managed by your system administrator.”
Open a Notepad then copy-paste the following text:
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionPoliciesWindowsSidebar]
“TurnOffSidebar”=-
[HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionPoliciesWindowsSidebar]
“TurnOffSidebar”=-
Save it as Gadget_fix.reg. Run this File and reboot your Windows computer.
Note: Some of the website says weather gadget has been discontinued by microsoft and thats why weather gadget stops working.There is no such information and that is not correct.Microsoft told the user not to use the gadget as it makes your computer vulnerable.
Microsoft Says Windows Sidebar platform in Windows 7 and Windows Vista has serious vulnerabilities. Microsoft has retired the feature in newer releases of Windows. Gadgets could be exploited to harm your computer, access your computers files, show you objectionable content, or change their behavior at any time. An attacker could even use a gadget to take complete control of your PC.
If any of the gadgets intermittently does not start in windows 7 try this hotfix from microsoft described on page http://support.microsoft.com/kb/979164.
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