configuring network access policy to control access to ssl ...€¦ · configuring a domain...
TRANSCRIPT
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© 2015 IBM Corporation
Madhusudhanan Ravichandran and Sangram PalandeL2 Technical EngineerIBM Security Systems
February 01, 2016
Configuring Network Access Policy to control access to SSL-enabled websites and Non-web applications.
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2© 2015 IBM Corporation
Session Agenda – Use Case
1. Configuring a domain certificate category in a Network Access Policy to control access to SSL-enabled websites.
2. Configuring XGS to control Non-web applications access over the network.
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3© 2015 IBM Corporation
What is a NAP rule?
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4© 2015 IBM Corporation
What is an Application object?
Controls the types of applications and websites that can communicate across your network. Using four different types of application objects, you can control how desktop applications communicate across your network, or control
access to certain types of web sites and web-based applications.
What is a Domain certificate category?
A domain certificate category is where we access a certain domain certificate while accessing the HTTP/HTTPS urls which is issued by the host where in our X-force has classified certain Domain certificate categories which are available in common. For Example: When a user tried to access a banking website we will access certain domain certificates issued by the banks in order to have a secure transaction.
What is a Domain Certificate list?
A Domain Certificate List can be used in a Network Access Policy to allow or deny access to a list of specific domains independent of a Domain Certificate Category.
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Configuring a domain certificate category in a Network Access Policy to control access to SSL-enabled websites
This use case describes how to configure a Network Access Policy to control the user’s access to a specific Domain Certificate Category.In this example, XGS blocks the user’s access to web storage sites using a Domain Certificate Category.
Note: A Domain Certificate List can be used in a Network Access Policy to allow or deny access to a list of specific domains independent of a Domain Certificate Category.
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Configuring a Network Access rule
Accessing the Network Access Policy
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On the Response tab, add the Event Log object to Added Objects.
On the Source tab, add Any to Added Objects and leave the others in Available Objects. On the Destination tab, add Any to Added Objects and leave the others in Available Objects.
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On the Application tab, Click New and select Domain Certificate Categories.
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In the Add Domain Category window, specify the Name for the object.
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On the Domain Categories tab, click the Filter button and create a filter using the following parameters:
Match : All Rules
Column : Available Domain Certificate
Condition : Contains
Value : Banking
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The Filter returns a list of Domain Categories with web storage content. Add Banking - All to the Added Domain Certificates list. Click Save Configuration.
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12© 2015 IBM Corporation
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13© 2015 IBM Corporation
Deploying policy
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Web Page blocked message when trying to access the bank website
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View Network Access Events
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Session Agenda – Use Case
2. Configuring XGS to control Non-Web applications access over the network
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In this session we are covering below points.
What are Non-Web Applications? How to control Non-Web application access over the network? How to monitor Non-Web application access using XGS
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What are Non-Web Applications?
Non-Web applications are Installed on user workstation or enabled using an executible file. Cannot be accessed using web browser.
Some non-web applications use predefined ports to send traffic over the network. These applications can be blocked using specfic TCP/UDP ports by network device.Example: Microsoft Remote Desktop(3389), Telnet(23), SSH(22)
Peer-to-peer (P2P) applications, instant messaging applications, and social networking applications use randomly assigned dynamic ports. These applications need to be blocked using application signature on the Network device.Example: Skype, bittorrent, Jabber.
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Skype Desktop Application
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Create New Network Access Policy
Click the New button to open the Add Network Access Rule window.
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Configuring a Network Access rule
On the General Configuration tab, enter 1 in the Order field. Select the Enable check box. Set the Action to Reject.
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On the Response tab, add the Event Log object to Added Objects.
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On the Source tab, add Any to Added Objects and leave the others in Available Objects.
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On the Destination tab, add Any to Added Objects and leave the others in Available Objects.
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On the Application tab, Click New and select Non-Web Application.
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*Note: XGS provides a limited number of application categories, including commonly used applications that you might want to reject or to allow access to your network.
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In the Add Non-web Application Object window search for key work 'skype', specify the Name and select the Skype – VOIP, Instant
Messaging check box.
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On the Restriction tab, select Any for the Protocol and click Save Configuration.
* Note: This tab can be used to select any specific port to be blocked by the user.
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Add the newly created Non-web Application object 'Skype' to Added Objects
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On the Inspection tab, add the Default IPS object to Added Objects.
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On the Schedule tab, leave Added Objects empty. Click Save Configuration.
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Deploying Policy Click on Deploy to apply the configuration changes.
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Updated network Updated Network Access Policy View
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View Network Access Events
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Skype Blocked using Network Access policy
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References
1. http://www-01.ibm.com/support/docview.wss?uid=swg21700929
2. https://www-1.ibm.com/support/knowledgecenter/SSHLHV_5.3.2/com.ibm.alps.doc/tasks/alps_configuring_network_protection_policy_rules.htm
3. https://www-1.ibm.com/support/knowledgecenter/SSHLHV_5.3.2/com.ibm.alps.doc/tasks/alps_configuring_nonweb_application_objects.htm?lang=en
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Questions ?
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