NAME
tunnels - Shorewall6 VPN definition file
SYNOPSIS
/etc/shorewall6/tunnels
DESCRIPTION
The tunnels file is used to define rules for encapsulated (usually
encrypted) traffic to pass between the Shorewall6 system and a remote
gateway. Traffic flowing through the tunnel is handled using the normal
zone/policy/rule mechanism. See http://www.shorewall.net/VPNBasics.html
for details.
The columns in the file are as follows.
TYPE -
{ipsec[:{noah|ah}]|ipsecnat|gre|l2tp|pptpclient|pptpserver|{openvpn|openvpnclient|openvpnserver}[:{tcp|udp}][:port]|generic:protocol[:port]}
Types are as follows:
ipsec - IPv6 IPSEC
ipsecnat - IPv6 IPSEC with NAT Traversal (UDP port 4500 encapsulation)
gre - Generalized Routing Encapsulation (Protocol 47)
l2tp - Layer 2 Tunneling Protocol (UDP port 1701)
openvpn - OpenVPN in point-to-point mode
openvpnclient - OpenVPN client runs on the firewall
openvpnserver - OpenVPN server runs on the firewall
generic - Other tunnel type
If the type is ipsec, it may be followed by :ah to indicate that
the Authentication Headers protocol (51) is used by the tunnel (the
default is :noah which means that protocol 51 is not used). NAT
traversal is only supported with ESP (protocol 50) so ipsecnat
tunnels don't allow the ah option (ipsecnat:noah may be specified
but is redundant).
If type is openvpn, openvpnclient or openvpnserver it may
optionally be followed by ":" and tcp or udp to specify the
protocol to be used. If not specified, udp is assumed. Note: At
this writing, OpenVPN does not support IPv6.
If type is openvpn, openvpnclient or openvpnserver it may
optionally be followed by ":" and the port number used by the
tunnel. if no ":" and port number are included, then the default
port of 1194 will be used. . Where both the protocol and port are
specified, the protocol must be given first (e.g.,
openvpn:tcp:4444).
If type is generic, it must be followed by ":" and a protocol name
(from /etc/protocols) or a protocol number. If the protocol is tcp
or udp (6 or 17), then it may optionally be followed by ":" and a
port number.
ZONE - zone
The zone of the physical interface through which tunnel traffic
passes. This is normally your internet zone.
GATEWAY - address-or-range
The IP address of the remote tunnel gateway. If the remote gateway
has no fixed address (Road Warrior) then specify the gateway as
::/0. May be specified as a network address and if your kernel and
ip6tables include iprange match support then IP address ranges are
also allowed.
GATEWAY ZONES (Optional) - [zone[,zone]...]
If the gateway system specified in the third column is a standalone
host then this column should contain a comma-separated list of the
names of the zones that the host might be in. This column only
applies to IPSEC tunnels where it enables ISAKMP traffic to flow
through the tunnel to the remote gateway.
EXAMPLE
Example 1:
IPSec tunnel.
The remote gateway is 2001:cec792b4:1::44. The tunnel does not use
the AH protocol
#TYPE ZONE GATEWAY
ipsec:noah net 2002:cec792b4:1::44
Example 2:
Road Warrior (LapTop that may connect from anywhere) where the "gw"
zone is used to represent the remote LapTop
#TYPE ZONE GATEWAY GATEWAY ZONES
ipsec net ::/0 gw
Example 3:
Host 2001:cec792b4:1::44 is a standalone system connected via an
ipsec tunnel to the firewall system. The host is in zone gw.
#TYPE ZONE GATEWAY GATEWAY ZONES
ipsec net 2001:cec792b4:1::44 gw
Example 4:
OPENVPN tunnel. The remote gateway is 2001:cec792b4:1::44 and
openvpn uses port 7777.
#TYPE ZONE GATEWAY GATEWAY ZONES
openvpn:7777 net 2001:cec792b4:1::44
Example 8:
You have a tunnel that is not one of the supported types. Your
tunnel uses UDP port 4444. The other end of the tunnel is
2001:cec792b4:1::44.
#TYPE ZONE GATEWAY GATEWAY ZONES
generic:udp:4444 net 2001:cec792b4:1::44
FILES
/etc/shorewall6/tunnels
SEE ALSO
shorewall6(8), shorewall6-accounting(5), shorewall6-actions(5),
shorewall6-blacklist(5), shorewall6-hosts(5), shorewall6-interfaces(5),
shorewall6-maclist(5), shorewall6-params(5), shorewall6-policy(5),
shorewall6-providers(5), shorewall6-route_rules(5),
shorewall6-routestopped(5), shorewall6-rules(5), shorewall6.conf(5),
shorewall6-tcclasses(5), shorewall6-tcdevices(5),
shorewall6-tcrules(5), shorewall6-tos(5), shorewall6-zones(5)
[FIXME: source] 06/17/2010