We can distinguish two main types of:
- Source NAT whereby the source IP address of an incoming IP packet is replaced (translated) into a different IP address as it exits the device.
- Destination NAT does a 1:1 mapping between two destination IP addresses; this is also named as Static NAT or 1:1 NAT. On the F5 BIGIP appliance this type of NAT is configured as a NAT object. If you think about it, at a high level, DNAT is what a virtual server does – but without the load-balancing mechanism.
Both SNAT and NAT configuration objects are found in the GUI under Local Traffic :: Address Translation section. For more detailed information, refer to https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/tmos-routing-administration-11-6-0/7.html.
In this blog I will show you how to configure Destination NAT on the F5 BIGIP appliance.
In the example below, I am translating the destination IP address of 172.16.10.11, to the backend server’s IP address 10.0.0.11:
Let’s see how to configure it; please refer to the topology above.
Rafael A. Couto Cabral • LinkedIn Profile
Cisco | F5 | VMware Certified • PRINCE2 Practitioner
Originally posted 2017-12-06 18:08:43.