Configure Secure Tunnel

You can configure secure tunnels for:

Precrypted Traffic

You can send the precrypted traffic through a secure tunnel. When secure tunnels for Precryption is enabled, packets are framed and sent to the TLS socket. The packets are sent in PCAPng format.

When you enable the secure tunnel option for regular and precrypted packets, two TLS secure tunnel sessions are created.

It is recommended always to enable secure tunnels for precrypted traffic to securely transfer the sensitive information.

For more information about PCAPng, refer toPCAPng Application.

Mirrored Traffic

You can enable the Secure Tunnel for mirrored traffic. By default, Secure Tunnel is disabled.

Refer to the following sections for Secure Tunnel Configuration:

■   Configure Secure Tunnel from UCT-V to GigaVUE V Series Node in UCT-V
■   Configure Secure Tunnel between GigaVUE V Series Nodes

Prerequisites

■   Port 11443 should be enabled in security group settings. Refer to Network Security GroupsSecurity Group for more detailed information on Network Firewall / Security Group.
■   While creating Secure Tunnel, you must provide the following details:
•   SSH key pair
•   CA certificate

Notes

■   Protocol versions IPv4 and IPv6 are supported.
■   If you wish to use IPv6 tunnels, your GigaVUE‑FM and the fabric components version must be 6.6.00 or above.
■   For UCT-V with a version lower than 6.6.00, if the secure tunnel is enabled in the monitoring session, secure mirror traffic will be transmitted over IPv4, regardless of IPv6 preference.

Configure Secure Tunnel from UCT-V to GigaVUE V Series Node

To configure a secure tunnel in UCT-V, you must configure one end of the tunnel to the UCT-V and the other end to GigaVUE V Series Node. You must configure the CA certificates in UCT-V and the private keys and SSL certificates in GigaVUE V Series Node. Refer to the following steps for configuration:

S. No

Task

 Refer to

1.

Upload a Custom Authority Certificate (CA)

You must upload a Custom Certificate to UCT-V Controller to establish a connection with the GigaVUE  V Series Node.

To upload the CA using GigaVUE-FM, follow the steps given below:

  1. Go to Inventory > Resources > Security > CA List.
  2. Click New to add a new Custom Authority. The Add Custom Authority page appears.
  3. Enter or select the following information.

    Field

    		Action

    Alias

    Alias name of the CA.

    File Upload

    Choose the certificate from the desired location.

  4. Click Save.

For more information, refer to the section Adding Certificate Authority

2.

Upload an SSL Key

You must add an SSL key to the GigaVUE V Series Node. To add an SSL Key, follow the steps in the section SSL Decrypt

3

Enable the secure tunnel

You should enable the secure tunnel feature to establish a connection between the UCT-V and GigaVUE V Series Node. To enable the secure tunnel, follow these steps:

1. In the Edit Monitoring Session page, click Options. The Apply template page appears.
2. Enable the Secure Tunnel button. You can enable secure tunnel for both mirrored and precrypted traffic.

Note:   When GigaVUE V Series Node is upgraded or deployed to 6.5, all the existing monitoring sessions will be redeployed, and individual TLS TEPs are created for each UCT-V.

4.

Select the SSL Key while creating a monitoring domain and configuring the fabric components in GigaVUE‑FM.

You must select the added SSL Key in the GigaVUE V Series Node while creating a monitoring domain configuring the fabric components in GigaVUE‑FM. To select the SSL key, follow the steps in the section Configure GigaVUE Fabric Components in GigaVUE-FM

 

If the existing monitoring domain does not have a SSL key, you can add it by following the given steps:

1. Select the monitoring domain for which you want to add the SSL key.
2. Click the Actions drop down list and select Edit SSL Configuration. An Edit SSL Configuration window appears.
3. Select the CA in the UCT-V Agent Tunnel CA drop down list.
4. Select the SSL key in the V Series Node SSL key drop down list.
5. Click Save.

5.

Select the CA certificate while creating the monitoring domain configuring the fabric components in GigaVUE‑FM.

You should select the added Certificate Authority (CA) in UCT-V Controller. To select the CA certificate, follow the steps in the sectionConfigure GigaVUE Fabric Components in GigaVUE-FMConfigure GigaVUE Fabric Components in GigaVUE-FM

Configure Secure Tunnel between GigaVUE V Series Nodes

You can create secure tunnel:

■   Between two GigaVUE V Series Nodes.
■   From one GigaVUE V Series Node to multiple GigaVUE V Series Nodes.

You must have the following details before you start configuring secure tunnels between two GigaVUE V Series Nodes:

■   IP address of the tunnel destination endpoint (Second GigaVUE V Series Node).
■   SSH key pair (pem file).

To configure secure tunnel between two GigaVUE V Series Nodes, refer to the following steps:

S. No

Task

 Refer to

1.

Upload a Certificate Authority (CA) Certificate

You must upload a Custom Certificate to UCT-V Controller to establish a connection between the GigaVUE V Series Node.

To upload the CA using GigaVUE-FM follow the steps given below:

  1. Go to Inventory > Resources > Security > CA List.
  2. Click Add, to add a new Certificate Authority. The Add Certificate Authority page appears.
  3. Enter or select the following information.

    Field

    		Action

    Alias

    Alias name of the CA.

    File Upload

    Choose the certificate from the desired location.

  4. Click Save.
  5. Click Deploy All.

For more information, refer to the section Adding Certificate Authority

2.

Upload an SSL Key

You must add an SSL key to GigaVUE V Series Node. To add SSL Key, follow the steps in the section SSL DecryptSSL Decrypt

3

Create a secure tunnel between UCT-V and the first GigaVUE V Series Node

You should enable the secure tunnel feature to establish a connection between the UCT-V and the first GigaVUE V Series Node. To enable the secure tunnel feature follow these steps:

1. In the Edit Monitoring Session page, click Options. The Apply template page appears.
2. Enable the Secure Tunnel button. You can enable secure tunnel for both mirrored and precrypted traffic.

4.

Select the added SSL Key while creating a Monitoring Domain.

Select the added SSL Key while creating a Monitoring Domain and configuring the fabric components in GigaVUE‑FM in the first GigaVUE V Series Node .

You must select the added SSL Key for the first GigaVUE V Series Node.

To select the SSL key, follow the steps in the section Configure GigaVUE Fabric Components in GigaVUE-FM

5.

Select the added CA certificate while creating the Monitoring Domain

You should select the added Certificate Authority (CA) in UCT-V Controller. To select the CA certificate, follow the steps in the section Configure GigaVUE Fabric Components in GigaVUE-FM

6

Create an Egress tunnel from the first GigaVUE V Series Node with tunnel type as TLS-PCAPNG in the Monitoring Session

You must create a tunnel for traffic to flow out from the first GigaVUE V Series Node with tunnel type as TLS-PCAPNG in the Monitoring Session. Refer to Create Ingress and Egress Tunnels for more detailed information on how to create tunnels.

To create the egress tunnel, follow these steps:

1. After creating a new monitoring session, or click Actions > Edit on an existing monitoring session, the GigaVUE-FM canvas appears.
2. In the canvas, select New > New Tunnel, drag and drop a new tunnel template to the workspace. The Add Tunnel Spec quick view appears.
3. On the New Tunnel quick view, enter or select the required information as described in the following table:

Field

 Action

Alias

The name of the tunnel endpoint.

Description

The description of the tunnel endpoint.

Type

Select TLS-PCAPNG for creating egress secure tunnel

Traffic Direction

Choose Out (Encapsulation) for creating an egress tunnel from the V Series node to the destination. Select or enter the following values:

o MTU- The default value is 1500 for Azure.

Note:  Increasing the MTU value will impact the performance and may even result in packet loss. By default, Azure VNet will attempt to fragment jumbo frames even if sending and receiving VMs are configured with a higher MTU.

o Time to Live - Enter the value of the time interval till which the session needs to be available. The value ranges from 1 to 255. The default value is 64.
o DSCP - Enter the Differentiated Services Code Point (DSCP) value.
o Flow Label - Enter the Flow Label value.
o Source L4 Port- Enter the Souce L4 Port value
o Destination L4 Port - Enter the Destination L4 Port value.
o Flow Label
o Cipher- Only SHA 256 is supported.
o TLS Version - Select TLS Version1.3.
o Selective Acknowledgments - Choose Enable to turn on the TCP selective acknowledgments.
o SYN Retries - Enter the value for number of times the SYN has to be tried. The value ranges from 1 to 6.
o Delay Acknowledgments - Choose Enable to turn on delayed acknowledgments.

Remote Tunnel IP

Enter the interface IP address of the second GigaVUE V Series Node. (Destination IP).
4. Click Save.

7.

Select the added SSL Key while creating a Monitoring Domain and configuring the fabric components in GigaVUE‑FM in second GigaVUE V Series Node

You must select the added SSL Key in second GigaVUE V Series Node. To select the SSL key, follow the steps in the section Configure GigaVUE Fabric Components in GigaVUE-FM

8

Create an ingress tunnel for the second GigaVUE V Series Node with tunnel type as TLS-PCAPNG in the Monitoring Session

You must create a ingress tunnel for traffic to flow in from GigaVUE V Series Node with tunnel type as TLS-PCAPNG while creating the monitoring session. Refer to Create a Monitoring Session to know about monitoring session.

 

To create the ingress tunnel, follow these steps:

1. After creating a new monitoring session, or click Actions > Edit on an existing monitoring session, the GigaVUE-FM canvas appears.
2. In the canvas, select New > New Tunnel, drag and drop a new tunnel template to the workspace. The Add Tunnel Spec quick view appears.
3. On the New Tunnel quick view, enter or select the required information as described in the following table:

Field

 Action

Alias

The name of the tunnel endpoint.

Description

The description of the tunnel endpoint.

Type

Select TLS-PCAPNG for creating egress secure tunnel.

Note:  If you are enabling Secure tunnel in Monitoring Session with traffic acquisition method as UCT-V, you must not create TLS-PCAPNG Tunnel with direction IN, Destination L4 port 11443, and GigaVUE V Series Node version 6.5 and above.

Traffic Direction

Choose In (Decapsulation) for creating an ingress tunnel that receives traffic from V Series node 1. Select or enter the values as described in Step 6.

IP Version

The version of the Internet Protocol. IPv4 and IPv6 are supported.

Remote Tunnel IP

Enter the interface IP address of the first GigaVUE V Series Node (Destination IP).
4. Click Save.