Simulation and Analysis of Network Address Translation (NAT) & Port Address Translation (PAT) Techniques

Advancements in Internet lead to the shortage of available IPV4 addresses. The main long-term solution to the IP address scalability problem was to increase the size of the IP address. To subside this problem temporarily, a specific subset of IPV4 address was termed as private. The size of routing table can be managed using certain techniques. Instead of holding information about whole route, the routing table holds information which results in next hop in next hop routing technique. Using network specific routing technique searching process is simplified as only one entry in routing table is used which defines the address of complete network. In this paper we will stimulate the network address translation and port address translation routing technique.