My CISCO Journal

We can adjust timeout values for different sort of packets in NAT is follow:

Some special NAT services that we can enable are for SIP and other communication protocols:

These services are needed to be enabled as we can’t modify IP header value in data packet in some special applications SIP, H.323 etc.

SNAT: Statefull Network Address Translation:

Okay, no network is ideal when it comes to 100 % up time, to avoid network failure; we use redundancy in our designs. So how it’s done in NAT? For this purpose we use Statefull NAT. in SNAT we create a group of our NAT IP addresses. The active Translator IP continuously exchanges the route maps and NAT entries with the Redundant NAT IP, in case the active IP translator fails, the redundant IP Translator take charge immediately. It is better represented in below network Topology:

I think that’s enough! We have had quite a discussion on NAT. NAT is one of the coolest protocol, which has really helped in preservation of the IP address space. If there was no NAT, we would be using IPv6 now!

 A little recap of what we have discussed so far:

I would request you to please implement the above mentioned NAT topologies and practice all the NAT related configurations. As Practice is the key to master NATING!