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IPv4 default gateway
Simplifying things, a default gateway is a router linking to the Internet. If such a router
is connected to this interface you have to enter its IP address here. In "Modules >
Network > Settings" you can select which interface is to be used to connect to the
Internet. Selecting this interface, SX-GATE will setup a default router via the gateway
specified here.
Additional IPv4 addresses (aliases) / Cluster IP addresses
You can specify additional IP addresses for the select network interface. You can add
addresses belonging to the same IP subnet as the primary address. This is useful
for example to bind multiple Internet IP addresses to SX-GATE and then use firewall
rules to redirect connections to different internal addresses. However you may also add
addresses of different networks if multiple IP subnets share the same physical Ethernet.
IPv6 address
Enter an IPv6 address for this interface. If the address is based on a delegated prefix,
please add an entry of type "IPv6 address" in menu "Definitions > IP objects" which
refers to the prefix.
IPv6 prefix length
The IPv6 prefix length is the equivalent to IPv4 netmasks. The typical prefix length ist
64.
With prefix lengths greater than 64 some IPv6 features like
e.g. SLAAC no longer work. Use large prefixes only when you
understand the implications.
IPv6 default gateway
If a router is attached to the current interface which provides Internet connectivity, you
can enter its IP address here.
You can either enter a global address or a link local address
(fe80:...).
IPv6 privacy extension (RFC3041)
A dynamic IPv6 address derived with SLAAC is based on the hardware address of the
network card. So it can be tracked worldwide easily. Enable this option and SX-GATE
will add a temporary random address which is preferred.
