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The Hostname is a descriptive name by which the SnapGear VPN Router will be known on the
network.
The SnapGear VPN Router can utilize IP Masquerading, whereby users on the local network
effectively share the one external IP address. Masquerading allows insiders to get out, without
allowing outsiders in. By default, the Internet Interface is setup to Masquerade. Masquerading has
the following advantages:
•
Added security as only the address of the gateway is known by machines outside of your
local network.
•
All machines on your local network can access the Internet through a single ISP account.
•
Only one public IP address is used and is shared by all machines on your local network,
each of these local machines has its own private IP address.
SnapGear recommends leaving Masquerade set on the Internet Interface.
Internet Interface Aliases allows the SnapGear VPN Router to respond to multiple IP addresses on
the Internet interface. You must also setup appropriate Incoming Access rules to allow traffic sent
to the additional (aliased) IP addresses to be passed to the local network.
On rare occasions it may be necessary to change the Ethernet hardware or MAC Address of your
SnapGear VPN router. Note that this is a globally unique address, which is specific to a single
SnapGear VPN router. It is set by the manufacturer and should not normally be changed. However,
you may need to change it if your ISP has configured your ADSL or cable modem to communicate
only with a device that has a known MAC address.
Network Configuration
52
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