Siemens RUGGEDCOM ROX II User Manual page 418

Chapter 12
Tunneling and VPNs
Parameter
beacon-interval { beacon-interval }
3. Add GOOSE or generic tunnels as required. For more information, refer to
Tunnel" or Section 12.6.3, "Adding a Generic
Type commit and press Enter to save the changes, or type revert and press Enter to abort.
4.
Section 12.3
Managing L2TP Tunnels
The Layer Two Tunneling Protocol (L2TP) is used primarily to tunnel Point-to-Point Protocol (PPP) packets through
an IP network, although it is also capable of tunneling other Layer 2 protocols.
RUGGEDCOM ROX II utilizes L2TPD in conjunction with Libreswan and PPP to provide support for establishing a
secure, private connection with the router using the Microsoft Windows VPN/L2TP client.
IMPORTANT!
L2TPD listens on UDP port 1701. If a firewall is enabled, it must be configured to only allow
connections to L2TPD through IPsec. Direct connections to L2TPD must be prevented.
CONTENTS
• Section 12.3.1, "Configuring L2TP Tunnels"
• Section 12.3.2, "Configuring DNS Servers"
• Section 12.3.3, "Configuring PPP Options"
• Section 12.3.4, "Configuring WINS Servers"
Section 12.3.1
Configuring L2TP Tunnels
To configure L2TP tunnels, do the following:
1. Make sure the CLI is in Configuration mode.
Navigate to tunnel » l2tp and configure the following parameter(s) as required:
2.
Parameter
enabled
local-ip { local-ip }
first-ip { first-ip }
372
Synopsis: { off } or a 32-bit signed integer between 10 and 3600
Default: 60
The Round Trip Time (RTT) of the sent message
Tunnel".
Enables L2TP.
Synopsis: A string 7 to 15 characters long
The local IP address. When set, all L2TP interfaces (l2tp-ppp-0, l2tp-ppp-1, etc.) will use
the same IP address. To use different local IP addresses (chosen from an IP pool) for
different L2TP interfaces, leave this parameter empty.
Synopsis: A string 7 to 15 characters long
The first address in the IP address pool. If local-ip is not set, both local and remote IP
addresses will be taken from this pool.
Description
Section 12.5.3, "Adding a GOOSE
Description
Managing L2TP Tunnels
RUGGEDCOM ROX II
CLI User Guide