What is NAT control in Asa?
Nat-Control is the feature on the ASA’s that basically states the following: In order for a device to go from a higher security level to a lower security level a NAT translation must be in place for the inside user IP address.
What are types of contexts in Asa?
In multiple security context mode, the Cisco security appliance can be divided into three types: A system execution space….System Execution Space
- Context name.
- Location of context’s startup configuration. The configuration of each context is also known as a configlet.
- Interface allocation.
How do I set up auto NAT?
Auto NAT is configured using the following steps: Create a network object. Within this object define the Real IP/Network to be translated….
- Configuring Dynamic NAT.
- Dynamic PAT (Hide NAT)
- Configuring Static NAT or Static NAT with Port Translation.
What is no NAT rule?
No NAT rules are configured (at Policies > NAT) by specifying the desired match conditions (zone, IP, etc.) and leaving the source translation and destination translation fields blank. It is also possible to specify a list of IP addresses or IP address ranges in a NAT rule. NAT rules are processed top to bottom.
What is the difference between identity NAT and NAT exemption?
According to the Cisco ASA: All-in-One Firewall, IPS, and VPN Adaptive Security Appliance book, “The main difference between identity NAT and NAT exemption is that with identity NAT, the traffic must be sourced from the address specified with the nat 0 statement, whereas with NAT exemption, traffic can be initiated by …
What is the NAT Order?
In its most basic form, NAT translates one IP address to another IP address. When the router uses this order of operations, it takes the inbound packet, starting at the top and moves down the list. If the packet is from a NAT inside-designated interface, it uses the inside-to-outside list.
What is after auto NAT?
after-auto = This configuration parameter simply moves this NAT configuration to the very end of the NAT configuration (called Section 3). It basicly says that its one of the last rules to be matched against and connections that is coming to the firewall.
How many contexts can Asa create?
In this example, the ASA can have up to five customer contexts.