SmartFlex
4.12 IPsec Tunnel Configuration
To open the IPsec Tunnel Configuration page, click IPsec in the Configuration section of
the main menu. The menu item will expand and you will see four separate configuration pages:
1st Tunnel, 2nd Tunnel, 3rd Tunnel and 4th Tunnel. The IPsec tunnel function allows you to
create a secured connection between two separate LAN networks. The router allows you to
create up to four IPsec tunnels. IPv4 and IPv6 tunnels are supported (dual stack), you can
transport IPv6 traffic through IPv4 tunnel and vice versa.
To encrypt data between the local and remote subnets, specify the appropriate values in
the subnet fields on both routers. To encrypt the data stream between the routers only,
leave the local and remote subnets fields blank.
If you specify the protocol and port information in the Local Protocol/Port field, then the
router encapsulates only the packets matching the settings.
Item Description
Description Name or description of the tunnel.
Host IP Mode
• IPv4 – The router communicates via IPv4 with the opposite
side of the tunnel.
• IPv6 – The router communicates via IPv4 with the opposite
side of the tunnel.
Remote IP Address IPv4, IPv6 address or domain name of the remote side of the
tunnel, based in the Host IP Mode above.
Remote ID Identifier (ID) of remote side of the tunnel. It consists of two parts:
a hostname and a domain-name.
Tunnel IP Mode
• IPv4 – The IPv4 communication r uns inside the tunnel.
• IPv6 – The IPv6 communication r uns inside the tunnel.
First Remote Subnet IPv4 or IPv6 address of a network behind remote side of the
tunnel, based on Tunnel IP Mode above.
First Remote Subnet
Mask/Prefix
IPv4 subnet mask of a network behind remote side of the tunnel,
or IPv6 prefix (single number 0 to 128).
Second Remote
Subnet
IPv4 or IPv6 address of the second network behind remote side
of the tunnel, based on Tunnel IP Mode above. For IKE Protocol
= IKEv2 only.
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