Oracle Cloud Infrastructure Documentation

Yamaha RTX Series

This configuration was validated using an RTX1210 running Firmware Rev.14.01.28 and RTX830 running Firmware Rev.15.02.03.

Important

Oracle provides configuration instructions for a tested set of vendors and devices. Use the correct configuration for your vendor and software version.

If the device or software version that Oracle used to verify the configuration does not exactly match your device or software, you might still be able to create the necessary configuration on your device. Consult your vendor's documentation and make any necessary adjustments.

If your device is for a vendor not in the list of verified vendors and devices, or if you're already familiar with configuring your device for IPSec, see the list of supported IPSec parameters and consult your vendor's documentation for assistance.

Important

Oracle uses asymmetric routing across the multiple tunnels that make up the IPSec connection. Even if you configure one tunnel as primary and another as backup, traffic from your VCN to your on-premises network can use any tunnel that is "up" on your device. Configure your firewalls accordingly. Otherwise, ping tests or application traffic across the connection will not reliably work.

Before Starting

Before configuring your CPE:

  • Configure your internet provider settings.
  • Configure firewall rules to open UDP port 500, UDP port 4500, and ESP.

Supported Encryption Domain or Proxy ID

The values for the encryption domain (also known as a proxy ID, security parameter index (SPI), or traffic selector) depend on whether your CPE supports route-based tunnels or policy-based tunnels. For more information about the correct encryption domain values to use, see Supported Encryption Domain or Proxy ID.

Parameters from API or Console

Get the following parameters from the Oracle Cloud Infrastructure Console or API.

${ipAddress#}

  • Oracle VPN headend IPSec tunnel endpoints. There is one value for each tunnel.
  • Example value: 129.146.12.52

${sharedSecret#}

  • The IPSec IKE pre-shared-key. There is one value for each tunnel.
  • Example value: EXAMPLEDPfAMkD7nTH3SWr6OFabdT6exXn6enSlsKbE

${cpePublicIpAddress}

  • The public IP address for the CPE (previously made available to Oracle via the Console).

${VcnCidrBlock}

  • When creating the VCN, your company selected this CIDR to represent the IP aggregate network for all VCN hosts.
  • Example Value: 10.0.0.0/20

Parameters Based on Current CPE Configuration and State

The following parameters are based on your current CPE configuration.

${tunnelInterface#}

  • An interface number to identify the specific tunnel.
  • Example value: 1

${ipsecPolicy#}

  • The SA policy to be used for the selected inline interface.
  • Example value: 1

${localAddress}

  • The public IP address of your CPE.
  • Example value: 146.56.2.52

Config Template Parameter Summary

Each region has multiple Oracle IPSec headends. The following template allows you to set up multiple tunnels on your CPE, each to a corresponding headend. In the table, "User" is you/your company.

Parameter Source Example Value
${ipAddress1} Console/API 129.146.12.52
${sharedSecret1} Console/API (long string)
${ipAddress2} Console/API 129.146.13.52
${sharedSecret2} Console/API (long string)
${cpePublicIpAddress} User 1.2.3.4
${VcnCidrBlock} User 10.0.0.0/20
Important

The following ISAKMP and IPSec policy parameter values are applicable to Site-to-Site VPN in the commercial cloud. For the Government Cloud, you must use the values listed in Required Site-to-Site VPN Parameters for Government Cloud.

ISAKMP Policy Options

Parameter Recommended Value
ISAKMP protocol version Version 1
Exchange type Main mode
Authentication method Pre-shared keys
Encryption AES-256-cbc
Authentication algorithm SHA-256
Diffie-Hellman Group Group 5
IKE session key lifetime 28800 seconds (8 hours)

IPSec Policy Options

Parameter Recommended Value
IPSec protocol ESP, tunnel-mode
Encryption AES-256-cbc
Authentication algorithm HMAC-SHA1-96
Diffie-Hellman Group Group 5
Perfect Forward Secrecy Enabled
IPSec session key lifetime 3600 seconds (1 hour)

CPE Configuration

ISAKMP and IPSec Configuration

tunnel select 1
description tunnel OCI-VPN1 
ipsec tunnel 1
  ipsec sa policy 1 1 esp aes256-cbc sha-hmac
  ipsec ike duration ipsec-sa 1 3600
  ipsec ike duration isakmp-sa 1 28800
  ipsec ike encryption 1 aes256-cbc
  ipsec ike group 1 modp1536
  ipsec ike hash 1 sha256
  ipsec ike keepalive log 1 off
  ipsec ike keepalive use 1 on dpd 5 4
  ipsec ike local address 1 ${cpePublicIpAddress}
  ipsec ike local id 1 0.0.0.0/0
  ipsec ike nat-traversal 1 on
  ipsec ike pfs 1 on
  ipsec ike pre-shared-key 1 text ${sharedSecret1}
  ipsec ike remote address 1 ${ipAddress1}
  ipsec ike remote id 1 0.0.0.0/0
ip tunnel tcp mss limit auto
tunnel enable 1

tunnel select 2
description tunnel OCI-VPN2
ipsec tunnel 2
  ipsec sa policy 2 2 esp aes256-cbc sha-hmac
  ipsec ike duration ipsec-sa 2 3600
  ipsec ike duration isakmp-sa 2 28800
  ipsec ike encryption 2 aes256-cbc
  ipsec ike group 2 modp1536
  ipsec ike hash 2 sha256
  ipsec ike keepalive log 2 off
  ipsec ike keepalive use 2 on dpd 5 4
  ipsec ike local address 2 ${cpePublicIpAddress}
  ipsec ike local id 2 0.0.0.0/0
  ipsec ike nat-traversal 2 on
  ipsec ike pfs 2 on
  ipsec ike pre-shared-key 2 text ${sharedSecret2}
  ipsec ike remote address 2 ${ipAddress2}
  ipsec ike remote id 2 0.0.0.0/0
ip tunnel tcp mss limit auto
tunnel enable 2

ipsec auto refresh on

Static Routes Configuration

ip route ${VcnCidrBlock} gateway tunnel 1 hide gateway tunnel 2 hide