How to Connect Barracuda SecureEdge to Teridion via Dynamic Routing (BGP) over IPsec

Barracuda SecureEdge Manager allows you to connect SecureEdge to Teridion via BGP over IPsec. Teridion Connect provides numerous PoPs (Points of Presence) across the globe, including China, to allow access to their network backbone. Barracuda SecureEdge can connect to the TCR (Teridion Cloud Router) deployed in one of the PoPs by using IPsec to leverage their backbone to improve connectivity. For more information, visit the Teridion website.

Before You Begin

Deploy and set up your Teridion infrastructure. For assistance on the Teridion setup, please contact Teridion.

Step 1. Collect Site Information

Log into your Teridion portal and collect the following information:

From the Site Configuration page, collect the information on the PoE IP from the site you need to connect to.
- Site Details

Tunnel type
High Availability (Optional)
Gateways
- FQDN
- Gateways IPs
Transfer Network

Dynamic Routing with BGP
IPsec IKEv2 Settings
- IPsec Phase 1
- IPsec Phase 2

In this example, we have collected the following settings:

- PoE (IP Teridion Router): 52.252.228.31
- SiteID (Firewall Internal IP): 10.2.0.4
- Gateway #1 IP (Firewall Public IP): 23.99.253.105
- Transfer Network TCR IP: 169.254.0.1/30
- Transfer Network Gateway IP: 169.254.0.2/30

IKEv2 Authentication Settings

Phase 1		Phase 2

Phase 1		Phase 2
Encryption	AES128	Encryption	AES256
Hash	MD5	Hash	MD5
DH-Group	Group 5	DH-Group	Group5
Proposal Handling	Strict	Proposal Handling	Strict
Lifetime [s]	28800	Lifetime	3600

BGP

Teridion ASN: 64512
Site ASN: 65534

Step 2. Configure IPsec IKEv2 over BGP

On Barracuda SecureEdge, do the following:

Go to https://se.barracudanetworks.com and log in with your existing Barracuda Cloud Control account.
In the left menu, click the Tenants/Workspaces icon and select the workspace you want to configure the IPsec IKEv2 tunnel for.
Go to Integration > IPsec VPN.
The IPsec VPN page opens. To add tunnel, click Add IPsec Tunnel.
The Create IPsec Tunnel window opens. In the General tab, specify values for the following:
- Enable – Click to enable tunnel status.
- Initiates – Initiates tunnel. Click to enable.
In the GENERAL INFORMATION section, specify values for the following:
- Name – Enter a unique tunnel name.
- Description – Enter a brief description.
In the AUTHENTICATION section, specify values for the following:
- Authentication – Select pre-shared key.
- Shared Secret – Enter the shared secret to use a shared passphrase to authenticate.
Click Next.
In the Source/Destination tab, specify values for the following:
- Enable BGP – Click to enable.
In the SOURCE section, specify values for the following:
- Type – Select Edge Service or Site.
- Peer – Select the peer on which the tunnel will be configured from the drop-down list.
- WAN Interface – Select the WAN interface from the drop-down list. Note that this is not applicable for the Edge Service for Virtual WAN.
- Local ID – Enter the local ID.
- Peering Address – Enter the peering address of the Transfer Network in CIDR format: 169.254.0.2/30
- ASN – Enter the ASN of the local side, e.g., 65534
In the DESTINATION section, specify values for the following:
- Remote Gateway – Enter your PoE IP for TCR, e.g., 52.252.228.31
- Remote ID – Enter your PoE IP for TCR, e.g., 52.252.228.31
- Peering Address – Enter the peering address of the Teridion BGP server, e.g., 169.254.0.1
- ASN – Enter the ASN of the remote side, e.g., 64512
Click Next.
In the Phases tab, configure the following settings.
To configure PHASE 1 encryption settings matching your Teridion setup, specify values for the following:
- Encryption – Select AES.
- Hash – Select MD5,
- DH-Group – Select Group 5.
- Proposal Handling – Select Strict.
- Lifetime – Enter 28800
To configure PHASE 2 encryption settings matching your Teridion setup, specify values for the following:
- Encryption – Select AES-256
- Hash – MD5.
- DH-Group – Select Group 5.
- Proposal Handling – Select Strict.
- Life time – Enter 3600.
- Traffic Volume Enabled – Click to disable.
Click Next.
The Network blade opens. In the NETWORK SETTINGS section, specify values for the following:
- Force UDP encapsulation – Click to disable.
- IKE Reauthentication – Click to enable.
In the DEAD PEER DETECTION section, specify values for DPD to match your Teridion configuration.
- Action When Detected – Select the action from the drop-down list. You can choose between the following:
  - None – Disable DPD.
  - Clear – Connection with the dead peer is stopped, and routes removed.
  - Restart – Connection is restarted.
- Delay – Enter the number of seconds after which an empty INFORMATIONAL message is sent to check if the remote peer is still available. Note: DPD Delay is required when detected DPD action is set anything other than None.
Click Save.
Verify that your IPsec tunnel configuration has been created successfully.
Click Finish.