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Chapter 4. Policy Object
4.1 Address
This chapter will cover the configuration of Address, which allows for
adding LAN, WAN and DMZ addresses and grouping addresses by purpose.
Each IP address can be assigned a friendly name and could represent a
single host or a network subnet. IP addresses are categorized into three types,
namely internal IP address, external IP address, and DMZ IP address. Group
feature is available for address management to help simplify the process of
applying addresses to network policies.
Once an address setting is created, it is ready for selection from the Source
Address or Destination Address drop-down list in a network policy.
Terms in Address
Name
Specify a friendly name for the address setting.
Address Type
Specify the address by the netmask, prefix length, IP range or FQDN.
1.
FQDN (Fully Qualified Domain Name) consists of Hostname and Domain
Name. For example, "www.google.com.tw" is a FQDN; in this case, "www" is the
hostname while "google.com.tw" is the domain name.
2.
When it comes to website blocking, it takes more than just a website
mapped IP (especially true for a website like Facebook and Yahoo), a network
subnet, or a blacklist entry. FQDN provides a more effective means to block the
access to a website by automatically parsing out all the mapped IP addresses.
3.
FQDN is particularly designed to solve the shortness in blacklisting or
whitelisting HTTPS and FTP addresses. It is available for configuration in WAN
interfaces and can be applied to network policies.
IP Version
The Internet protocol version for the address setting.
IP Address
Specify the IP address of a host, or a network subnet, which can be an
internal IP address, external IP address or DMZ IP address.
Netmask
Enter 255.255.255.255 to match a single IPv4 address.
Enter 255.255.255.0 to match a Class C IPv4 subnet, such as
192.168.100.x.
Gigabit Multi-Homing VPN Security Gateway
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