Central NAT Table

Central NAT Table The central NAT table enables you to define, and control with more granularity, the address translation performed by the FortiGate unit. With the NAT table, you can define the rules which dictate the source address or address group and which IP pool the destination address uses. While similar in functionality to IP […]

NAT in Transparent Mode

NAT in Transparent Mode Similar to operating in NAT mode, when operating a FortiGate unit in Transparent mode you can add security policies and: l Enable NAT to translate the source addresses of packets as they pass through the FortiGate unit. l Add virtual IPs to translate destination addresses of packets as they pass through […]

Benefits of NAT

Benefits of NAT More IP addresses Available while Conserving Public IP Addresses As explained earlier, this was the original intent of the technology and does not need to be gone into further. Financial Savings Because an organization does not have to purchase IP addresses for every computer in use there is a significant cost savings […]

Dynamic NAT

Dynamic NAT Dynamic NAT maps the private IP addresses to the first available Public Address from a pool of possible Addresses. In the FortiGate firewall this can be done by using IP Pools. Overloading This is a form of Dynamic NAT that maps multiple private IP address to a single Public IP address but differentiates […]

New FortiGate Has Arrived!!

Pretty stoked that my new POE FortiGate has arrived. For those of you that don’t know, I’m in the process of building my dream house and I now have a new FortiGate to power the place (and the 4 APs necessary to provide it complete coverage)….. I will finally have extra hardware again (my old […]


NAT NAT or Network Address Translation is the process that enables a single device such as a router or firewall to act as an agent between the Internet or Public Network and a local or private network. This “agent”, in real time, translates the source IP address of a device on one network interface, usually […]

IPv6 in FortiOS

IPv6 in FortiOS From an administrative point of view IPv6 works almost the same as IPv4 in FortiOS. The primary differences are the use of IPv6 format for addresses and fewer address types for IPv6. There is also no need for NAT if the FortiGate firewall is the interface between IPv6 networks. If the subnets […]


IPv6 Internet Protocol version 6 (IPv6) will succeed IPv4 as the standard networking protocol of the Internet. IPv6 provides a number of advances over IPv4 but the primary reason for its replacing IPv4 is its limitation in addresses. IPv4 uses 32 bit addresses which means there is a theoretical limit of 2 to the power […]