Zindagi Technologies has proven to be an expert in the field of Data canter services, cloud solutions managed IT services, IT Consultant, and IT security. Section 3: Manual NAT with after auto keyword.Whenever we configure NAT then there are 3 sections. If we want to translate real IP based on a condition, then it is known as conditional NAT.Ĭondition example: if the source is 10.1.1.1 and destination is 101.1.1.1 then translate it.If we want to initiate traffic from inside, then it will be dynamic or if we want to initiate traffic from outside then static.Layer 3 and layer 4 information is used for translation.It is bidirectional (connection can be initiated from inside or outside.).No matter whether the packet is received or not.) Translation is permanent (as we configure NAT, entry is automatically updated in the translation table, and it is permanent.It is many to one ( multiple real IPs can be translated with a single mapped IP).Translation is done based on layer 3 and layer 4.Translation is temporary (Idle timeout is 30 seconds by default).Layer 3 information is mainly in the translation table.Layer 3 information is used for translation.As we configure NAT, entry is not added in the translation table automatically, entry is added only when a packet is translated.It is unidirectional (Connection cannot be initiated from outside).Translation is temporary (Xlate table idle timeout is 3 hours).Translation is not fixed (mapped IP does not fix for Real IP ).Mapped IP address: address into which we translate real IP.Real IP address: address that we want to translate.
Whenever we translate an IP address, there are 2 types of IP address Private to public Ip (for internet access).To provide communication between overlapping subnets.To provide internet access to the inside user.NAT is used to provide communication between that network which is not reachable with each other. In this blog, we will learn about Network Address Translation (NAT) and its types, before we move forward into more details, let us understand what NAT exactly means? What Is NATĬonverting an IP address into any other IP which is reachable with the destination network.
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