
Virtual Private Networks (VPN)
Generic Routing Encapsulation (GRE)
Digi Connect IT® 16/48 User Guide
305
Example: GRE tunnel over an IPSec tunnel
The Connect IT 16/48 device can be configured as an advertised set of routes through an IPSec tunnel.
This allows you to leverage the dynamic route advertisement of GRE tunnels through a secured IPSec
tunnel.
The example configuration provides instructions for configuring the Connect IT 16/48 device with a
GRE tunnel through IPsec.
Connect IT 16/48-1 configuration tasks
1. Create an IPsec tunnel named
ipsec_gre1
with:
n
A pre-shared key.
n
Remote endpoint
set to the public IP address of the Connect IT 16/48-2 device.
n
A policy with:
l
Local network
set to the IP address and subnet of the local GRE tunnel,
172.30.0.1/32
.
l
Remote network
set to the IP address and subnet of the remote GRE tunnel,
172.30.0.2/32
.
2. Create an IPsec endpoint interface named
ipsec_endpoint1
:
a.
Zone
set to
Internal
.
b.
Device
set to
Ethernet: Loopback
.
c. IPv4 Address set to the IP address of the local GRE tunnel,
172.30.0.1/32
.
3. Create a GRE tunnel named
gre_tunnel1
:
a.
Local endpoint
set to the IPsec endpoint interface,
Interface: ipsec_endpoint1
.
b. Remote endpoint set to the IP address of the GRE tunnel on Connect IT 16/48-2,
172.30.0.2
.
4. Create an interface named
gre_interface1
and add it to the GRE tunnel:
a.
Zone
set to
Internal
.
b.
Device
set to
IP tunnel: gre_tunnel1
.
c. IPv4 Address set to a virtual IP address on the GRE tunnel,
172.31.0.1/30
.
Connect IT 16/48-2 configuration tasks
1. Create an IPsec tunnel named
ipsec_gre2
with:
n
The same pre-shared key as the
ipsec_gre1
tunnel on Connect IT 16/48-1.
n
Remote endpoint
set to the public IP address of Connect IT 16/48-1.
n
A policy with:
l
Local network
set to the IP address and subnet of the local GRE tunnel,
172.30.0.2/32
.
l
Remote network
set to the IP address of the remote GRE tunnel,
172.30.0.1/32
.
2. Create an IPsec endpoint interface named
ipsec_endpoint2
:
a.
Zone
set to
Internal
.
b.
Device
set to
Ethernet: Loopback
.
c. IPv4 Address set to the IP address of the local GRE tunnel,
172.30.0.2/32
.
Содержание Connect IT 16
Страница 1: ...Digi Connect IT 16 48 User Guide Firmware version 21 2 ...
Страница 157: ...Interfaces Bridging Digi Connect IT 16 48 User Guide 157 8 Click Apply to save the configuration and apply the change ...
Страница 440: ...Services Configure the ping responder service Digi Connect IT 16 48 User Guide 440 iperf Done ...