Aliases

Aliases define groups of ports, hosts, or networks. Aliases can be referenced by firewall rules, port forwards, outbound NAT rules, and several other areas. Using aliases results in configurations and rulesets which are significantly shorter, self-documenting, and easier to manage.

Note

These Aliases are collections of items for use by the firewall. Despite similar names, this is a completely different concept than “IP alias” type Virtual IP Addresses, which are a means of adding additional IP addresses to a network interface.

Aliases are located at Firewall > Aliases in the GUI. The page is divided into separate tabs for each general type of alias:

IP:

Lists Host Aliases and Network Aliases.

Ports:

Lists Port Aliases.

URLs:

Lists URL Aliases and URL Table Aliases.

All:

Shows all types of aliases, including Built-In System Aliases, in one large list.

When creating an alias, the GUI will sort the entry to the correct location based on the type of alias content, no matter which tab was used to create the alias.

• Alias Features and Limitations
  • Alias Sizing Concerns
  • Nested Aliases
  • Hostnames in Aliases
  • Mixing IPv4 and IPv6 Addresses in Aliases
  • Uses Beyond Firewall and NAT Rules
• Alias Types
  • Built-In System Aliases
  • Host Aliases
  • Network Aliases
  • Port Aliases
  • URL Aliases
  • URL Table Aliases
• Alias Configuration
  • Alias Settings
  • Creating an Alias
  • Bulk Import Network Aliases
• Alias Usage
• Alias Status (Firewall Table Contents)
  • Viewing Tables
  • Default Tables