Category Archives: NSX

VM Security Tags with NSX Firewall

This post will walk through virtual machine security tags; how we can create tags, automatically add virtual machines with tags to a specific security group, and build associated NSX firewall rules. As a bonus we’ll also apply a security tag to a vRA blueprint, allowing vRA provisioned machines to automatically receive a security tag and apply any corresponding NSX firewall rules.

Security tags and groups allow us to identify virtual machines with a common value, such as business department, support group, workloads, and so on. By applying security tags to virtual machines, and/or adding virtual machines to security groups, we can control security at a custom defined level, independent of the underlying infrastructure. Virtual machines can have multiple tags, allowing administrators to identify different values upon which to act. Many third party anti-virus solutions with NSX integration use security tags to protect and quarantine virtual machines depending on their health status.

The steps below assume that NSX is installed and working, for more information on installing the required components see the following series of posts.

NSX Install Guide Part 1 – Mgmt and Control Planes

NSX Install Guide Part 2 – Data Plane

NSX Install Guide Part 3 – Edge and DLR

Creating Security Tags and Groups

From the vSphere web client browse to Networking & Security, click NSX Managers, and select the appropriate NSX Manager. Open the Manage tab, then Security Tags. Existing security tags are listed, some third part plugins such as AV may also add and use security tags. To create a new security tag click the New Security Tag icon. Enter a name for the security tag, and a description if required, then click Ok.

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Security tags can be applied to virtual machines manually in the page referenced above, or through an automatic provisioning solution such as vRealize Automation.

Next, select the Grouping Objects page. Under Security Groups, click the Add New Security Group icon. Enter a name and description if required.

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Go to the third option: Select objects to include. Change the Object Type in the drop-down to Security Tag. Select the new security tag we created earlier.

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Review the details on the summary page and click Finish.

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The security group has now been created, and any virtual machines that use the security tag we included are automatically added to the group. You can create multiple security tags and groups for different departments, applications, or however you want to segregate these out.

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Creating NSX Firewall Rules

Our new security group / tag setup can be used to configure NSX firewall rules. Still under Networking & Security in the vSphere web client; select Firewall.

If you have already configured NSX firewall rules you’ll be familiar with this page, and likely have a number of sections and rules already configured. You can edit an existing rule or create a new one in the relevant section. To create a new section use the Add Section (folder) icon. Click the green plus icon to add a new rule, or the edit icon to edit an existing rule.

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When configuring the rule you can set the source, destination, or both to use a security group. Change the Object Type drop-down to Security Group, and select the new security group we created earlier.

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Remember to click Publish Changes when you’re done. For assistance with creating NSX firewall rules see this section of the NSX Documentation Center.

Adding Tags to vRA Blueprints

The use of security tags with blueprints requires NSX to be integrated with vRA. If you haven’t already done so you can follow the steps outlined in the VMware post Part 1 of Integrating NSX with vRealize Automation. You’ll also need an understanding of how to create blueprints, again there is more information on this in the VMware post Part 2 of Integrating NSX with vRealize Automation if you need it.

To add a security tag to a virtual machine provisioned by vRA we must add it to the appropriate blueprint. After adding security tags and/or groups to NSX Manager we need to run a data collection so that vRA is showing up to date information. From the vRA portal browse to the Infrastructure tab, select Compute Resources, Compute Resources. Move the mouse cursor over the compute resource and click Data Collection. Scroll down to Network and Security Inventory and click Request now. The sync will take a couple of minutes, you can leave the page during this time.

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Next open the Design tab and select Blueprints. We can add a security tag to an existing blueprint, or create a new one. In the design canvas click Network & Security from the list of categories. Locate Existing Security Tag and drag this onto the canvas. Alternatively you can use a security group at this stage if you’d prefer.

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Select the security tag from the list of existing tags. From the design canvas select the virtual machine and open the Security tab. Tick the referenced security tag to associate it with the virtual machine. Click Save and Finish to save the changes to the blueprint. Any virtual machines provisioned from this blueprint are now tagged with the security tag (or group) selected.

McAfee MOVE 4.5.0 Upgrade Guide with NSX

This post walks through the upgrade of McAfee MOVE to version 4.5.0 with NSX Manager, and can be used when upgrading McAfee MOVE Agentless versions 3.5.x, 3.6.x, and 4.0.0. The upgrade of versions 3.5.x or 3.6.x involves migrating all custom settings, policies and tasks with the McAfee MOVE Migration Assistant (these are retained by default when upgrading from version 4.0.0).

Pre-Requisites

The benefits and architecture of offloading AV to a dedicated Service Virtual Machine (SVM) with McAfee MOVE and NSX are covered in the McAfee MOVE with NSX Install Guide. The scope of this guide is to upgrade an existing McAfee MOVE installation and as such it is assumed that NSX Manager, IP Pools, service deployments (i.e. Guest Introspection), policies, and ePO integration are all in place. Furthermore it is assumed that network connectivity between components, time sync, DNS, vSphere access, etc. are also configured. For a full list of pre-requisities see the above install guide. The requirements below are specific to the McAfee MOVE 4.5 upgrade:

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Update Extensions

The first step is to update the extensions on the ePO server. When upgrading versions 3.5.x or 3.6.x the existing extensions are left in place to facilitate the migration of data, which we’ll cover later. When upgrading version 4.0.0 the extensions are replaced with the new versions, all settings and policies remain.

I am going to use Software Manager to download, install, and check in the software direct on the ePO web UI. If you prefer you can manually download the extensions on your own machine and then install them through the Extensions page (more info on this below). To use Software Manager click the drop down Menu option in the top left hand corner of the page and select Software Manager. Use the search function to find McAfee MOVE AntiVirus 4.5. Browse through the components, you will notice the Migration Assistant is included, click Check In All.

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Accept the license agreement and click Ok. The extensions are downloaded and installed.

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An alternative way of installation or updating extensions is to browse to McAfee Downloads, enter your grant number when prompted and then select McAfee MOVE AV for Virtual Servers, McAfee MOVE AntiVirus 4.5. Download the required files and then browse to the web interface of the ePO server (https://EPO:8443/ where EPO is the name of your EPO server). Log in as an administrator and click the drop down Menu option in the top left hand corner of the page. Locate Software, and select Extensions. Click Install Extension and install the downloaded zip files in the following order: Cloud Workload Discovery Cloud_Workload_Discovery_Hybrid_4.5.0.zip (note that the CommonUI bundle; mfs-commonui-core-ui,commonui-core-common and commonui-core-rest extensions, is a pre-req for the Cloud Workload Discovery 4.5 for ePO 5.1.3 and 5.3.1), McAfee MOVE AntiVirus extension MOVE-AV_Ext_4.5.0_Licensed.zip, Product Help extension MOVE-AV_HELP_EXT_4.5.0.zip.

Which ever way you install the extensions, ensure you download MOVE-AL-AL_SVM_OVF_4.5.0.148 (or most recent version). This zip file contains the Service Virtual Machine (SVM), which we’ll need to add to the SVM repository later.

Once the extensions are installed the new version of MOVE AntiVirus will be visible in the Data Center Security group, under Menu > Software > Extensions.

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For those upgrading versions 3.5.x or 3.6.x the old extensions remain in place in the MOVE AV group.

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You will also notice an additional option in the Automation menu; MOVE AV Agentless remains as the legacy option for versions 3.5.x or 3.6.x, and MOVE AntiVirus Deployment is created for version 4.5.0. The legacy MOVE AV Agentless option is deleted upon removal of the old extensions at the end of the process. Again, doesn’t apply to 4.0.0 because in this case the extensions are upgraded, rather than running side by side.

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Migration Assistant

The Migration Assistant can be used when upgrading from MOVE versions 3.5.x or 3.6.x, if you are upgrading from 4.0.0 then this step is not necessary. Use one of the methods outlined above to install the Migration Assistant extension. If you used Software Manager to install the full McAfee MOVE AntiVirus 4.5 package then the Migration Assistant should already be installed. If you need to manually downloading and install the extension then when using McAfee downloads you need to change the Software Downloads tab to Extensions to view the Migration extension, as shown below.

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When the install is complete; in the ePO web UI click the drop down Menu option, under Software, click Extensions. The MOVE Migration Assistant 4.5 is listed under Data Center Security.

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We can now go ahead and run the Migration Assistant; from the drop down Menu, under Policy, select MOVE Migration Assistant.

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Select Automatic migration to migrate all settings for supported products (note that unassigned policies are not migrated) and click Next. To select only certain policies or edit policies you can use the Manual migration option, for more information see page 10 of the McAfee MOVE Migration Guide.

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Review the items to be migrated, you can rename and edit the policy notes if required by clicking Rename and Edit Notes. When you’re ready to start migrating click Save.

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Once the migration job has finished go back into the MOVE Migration Assistant, next to Migrate Agentless Deployment Configuration Details (Agentless Only) select Run, and click Next. Click Ok to confirm migrating configuration details.

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When the config migration has completed click the drop down Menu option and under Automation select MOVE AntiVirus Deployment. You will see the SVM configuration and NSX registrations have all been migrated across.

Note that if you are upgrading from 3.5.x then the NSX certificate and credential data is migrated across, however you still need to enter the SVM configuration under Menu, Automation, MOVE AntiVirus Deployment, Configuration, General.

Upgrade SVM Registration

Now we need to add version 4.5.0 of the Service Virtual Machine (SVM) to the SVM repository, and update the registered SVM version with NSX Manager. In the ePO web UI click Menu, under Automation select MOVE AntiVirus Deployment. From the Configuration tab select SVM Repository, click Actions, Add SVM. Browse to the zip file containing the SVM we downloaded earlier and click Ok.

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The new version of the SVM will now be listed in the repository.

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Next go to Menu, Automation, MOVE AntiVirus Deployment. In the Configuration tab NSX Manager details and credentials should still be in place. Click the Service tab. The Registered SVM Version will still show the old version, from the Actions column for the NSX Manager click Upgrade. Select the new SVM version and click Ok. The latest version of the MOVE SVM is now registered with the selected NSX Manager.

Upgrade NSX Components

The final stage is to update the NSX security policy and service deployments. Log into the vSphere web client and click Networking & Security from the home page. Select Service Composer and then the Security Policies tab. As we’re upgrading an existing McAfee MOVE solution you should already have an AV related policy or policies configured, we need to reconfigure those to point at the new MOVE policies that were migrated across in ePO. Select the security policy to update and click the Edit icon.

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Click Guest Introspection Services and select the existing guest introspection service, click the edit icon and make a note of the existing settings. Cancel out of the edit window and click the red cross to delete the guest introspection service. Click the green plus symbol to add a new service.

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Enter a name for the service and ensure Apply is selected, use the McAfee MOVE AV service and select the ePO policy from the Service Profile drop down. The state should be set to Enabled and select Yes to enforce the policy. Use the same settings as the previous service if you like, the only difference will be the new service profile (ePO policy). Click Ok.

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Select the Security Groups tab. Confirm that existing security groups are in place with the NSX security policy associated with the McAfee ePO policy applied. If needed you can select a group and click the apply policy icon to apply the security policy edited above to a security group.

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Finally, we can update the Service Virtual Machines deployed on the ESXi hosts. From the left hand navigation pane select Installation and the Service Deployments tab. Existing installations will be listed here, with an Upgrade Available status. Service deployments are installed at vSphere cluster level, select the vSphere cluster to upgrade and click the Upgrade icon.

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New versions of the SVM are pushed out to each ESXi host in the selected cluster, replacing old versions using the same configuration details (datastore, port group, IP address range). Once complete the new version number is listed, the installation status is succeeded, and the service status is up.

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If you upgraded version 3.5.x or 3.6.x you can remove the legacy MOVE extensions once you have updated the SVM registration and service deployments on each vCenter. In the ePO web UI open the Extensions page, locate the old version of the McAfee MOVE extension and click Remove.

If any of the components referenced above are not in place, or you need to deploy McAfee MOVE AV to a new vSphere cluster, see the McAfee MOVE with NSX Install Guide post. The only other thing worth noting is I had a vCenter where the MOVE service registration was failing, I had to remove the MOVE service deployments and service definition from NSX Manager, remove the vCenter from cloud accounts in ePO, and then add it all back in as a new install, deploying the SVM as a fresh 4.5 install rather than an upgrade.

NSX Install Guide Part 3 – Edge and DLR

In the final installment of this 3 part guide we will configure the Edge Services Gateway (ESG) and Distributed Logical Router (DLR). The NSX installation and relevant logical switches must be in place before continuing, for further information see NSX Install Guide Part 1 – Mgmt and Control Planes and NSX Install Guide Part 2 – Data Plane. It is important to note that depending on your network configuration and NSX design, additional steps may be required to integrate with your chosen routing protocol.

First we will create an Edge Services Gateway, providing access to the physical network (north-south traffic), followed by a Distributed Logical Router, which will provide connectivity for virtual machines using different logical switches (east-west traffic). The DLR will connect to the ESG to provide external routing using a transit logical switch. The image below shows the topology of the described components (from the VMware Documentation Centre, which also provides more information on advanced features and routing configurations).

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Edge Services Gateway

  • The Edge Services Gateway allows virtual machines to route to external devices, in other words to access the physical network.
  • The ESG is deployed as a virtual appliance in 4 different sizes:
    • Compact: 512 MB RAM, 1 vCPU, 500 MB disk.
    • Large: 1 GB RAM, 2 vCPU, 500 MB disk + 512 MB disk
    • Quad Large: 1 GB RAM, 4 vCPU, 500 MB disk + 512 MB disk
    • X-Large: 8 GB RAM, 6 vCPU, 500 MB disk + 2 GB disk
  • Each ESG can have a total of 10 interfaces (internal and uplinks).

From the left hand navigation pane select NSX Edges, click the green plus symbol to create a new Edge. Select Edge Services Gateway. Assign a name that will be displayed in the vSphere inventory and click Next. The hostname will be displayed in the CLI but is an optional field (the Edge-ID will be displayed if no hostname is specified). Should you require HA, and a secondary appliance deploying, tick Enable High Availability.

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Configure the admin password (needs to be 12 characters plus the usual requirements) and logging level. You may want to enable SSH for troubleshooting purposes, this can also be enabled at a later date if required. Click Next.

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Select the datacentre and appliance size as per the recommendation from VMware below:

The Large NSX Edge has more CPU, memory, and disk space than the Compact NSX Edge, and supports a larger number of concurrent SSL VPN-Plus users. The X-Large NSX Edge is suited for environments that have a load balancer with millions of concurrent sessions. The Quad Large NSX Edge is recommended for high throughput and requires a high connection rate.

Large should be ok for most environments, compact shouldn’t be used for production. Click the green plus symbol to add an Edge appliance.

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Configure the vSphere placement parameters and click Ok. If you are using HA then add a second appliance, using a different datastore. DRS rules will automatically be added to keep the 2 appliances apart. If you do not deploy any appliances then the ESG will be created in an offline mode, until appliances are deployed. When you have finished adding the Edge appliances click Next.

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We must now add the Edge interfaces, click the green plus symbol.

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Configure the NSX Edge interfaces:

  • Add the physically connected distributed port group (click Select) to an Uplink interface, and enter the network details of your physical router. This provides a route to the physical network for north-south traffic.
  • If you selected HA then at least one internal interface must be configured to use a logical switch for heartbeat traffic, change the type to Internal and leave the IP address table blank.
  • If you will be adding a Distributed Logical Router then add an internal interface to the TRANSIT logical switch where the DLR will also be attached. The subnets to be routed externally are added to the DLR later.
  • Lab only: if you are not using a Distributed Logical Router, i.e. in a very small lab environment, then add the subnets for external connectivity and their associated logical switches as internal interfaces (east-west traffic).

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When the required interfaces have been added click Next. Depending on your routing configuration you may need to add a default gateway, click Next.

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Tick Configure Firewall default policy and set the default traffic policy to Accept, enable logging if required. The firewall policy can be changed or configured later if required, however if you do not configure the firewall policy, the default policy is set to deny all traffic.

If you have deployed HA each appliance will be assigned a link local IP address on the heartbeat network we created earlier, you can manually override these settings if required in the Configure HA parameters section, otherwise leave as default and click Next.

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On the summary page click Finish to finalize the installation. The ESG will now be deployed, the details are listed on the NSX Edges page, note the type is NSX Edge. If you used HA then two ESG appliances will be deployed, you’ll notice in the vSphere inventory the virtual machine names have -0 and -1 at the end, -0 is the active ESG appliance by default until a failover occurs.

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Once an Edge is deployed you can add or change the existing configuration, such as interfaces, by double clicking the Edge. Depending on your design and network configuration additional routing settings may be required, these can be found under Manage, Routing.

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Distributed Logical Router

  • A Distributed Logical Router allows connectivity between virtual machines using different logical switches.
  • Distributed Routing allows for communication between virtual machines on different subnets, on the same host, without the need to leave the hypervisor level.
  • The DLR control VM sits in the control plane, although it pushes data plane kernel modules out to each host, allowing routing to be done within the hypervisor itself, these are kept up to date by the NSX Controllers.

From the left hand navigation pane select NSX Edges, click the green plus symbol to create a new Edge. Select Logical (Distributed) Router. Enter a name, this will appear in the vSphere inventory. If required you can enter a hostname, this will appear in the CLI, and a description and tenant. An Edge Appliance is deployed by default, this is needed unless you are using static routes. For dynamic routing and production environments Enable High Availability should also be selected, this deploys a standby virtual appliance, click Next to continue.

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Configure the local admin password (minimum 12 characters plus the usual requirements), it may also be worthwhile enabling SSH for future troubleshooting purposes. Note the logging level and change if required, otherwise click Next.

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If you chose to deploy an Edge appliance click the green plus symbol, select the vSphere options for the Edge appliance and click Ok, remember to add an additional appliance for HA using a different host and datastore, then Next.

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If you are using HA connect the interface to a distributed port group by clicking Select next to the HA Interface Configuration connection box.

Under the Configure interfaces of this NSX Edge section click the green plus symbol to add an interface. Configure the interfaces as required, internal interfaces are for east-west traffic, or VM to VM. Uplinks are for north-south traffic, and will typically connect to an external network through an Edge Services Gateway or third-party router VM. Uplink interfaces added will appear as vNICs on the DLR appliance. Add the interfaces associated with all the relevant networks and subnets you want to be routable, when you’re ready click Next.

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In this installation I have created three internal interfaces connected to their own dedicated logical switches; WEB, APP, and DB, configured with different subnets. Furthermore an uplink interface connected to the TRANSIT logical switch will be created, this will provide the link to the ESG for external routing.

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Depending on your routing configuration you may need to add a default gateway (usually the ESG), for me the ESG will publish the default route via our routing protocol.  Click Next, then Finish. The DLR control VM will now be deployed, the details are listed on the NSX Edges page, note the type is Logical Router. If you used HA then two VMs will be deployed, you’ll notice in the vSphere inventory the virtual machine names have -0 and -1 at the end, -0 is the active control VM by default until a failover occurs.

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Once a Logical Router is deployed you can add or change the existing configuration by double clicking the Logical Router. Depending on your design and network configuration additional routing settings may be required, these can be found under Manage, Routing. You will most likely need to add more subnets later on, this can be done under the Manage tab, and Settings, Interfaces. Click the green plus symbol and you will get the same Add Logical Router Interface wizard as we have used above.

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Ensure any virtual machines connected to the logical switches have their default gateway set to the DLR interface IP address. Virtual machines using logical switches now have connectivity through the DLR, despite being attached to different logical switches, and are able to route out to the physical network through the ESG.

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NSX Install Guide Part 1 – Management and Control Planes

NSX Install Guide Part 2 – Data Plane

NSX Install Guide Part 3 – Edge and DLR