A MAC-address Relaying NAT Router for PC Identification from Outside of a LAN

NAT (Network Address Translation) is well-known as one of the short-term solutions of IPv4 address exhaustion. NAT is a technique that shares a single IP address in several PCs, and is widely used for alleviating the IPv4 address exhaustion and as a security solution. However, when a backbone networ...

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Bibliographic Details
Published in2010 10th IEEE/IPSJ International Symposium on Applications and the Internet pp. 237 - 240
Main Authors Murakami, Ryo, Yamai, Nariyoshi, Okayama, Kiyohiko
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.07.2010
Subjects
Access control
IP networks
Local area networks
MAC address
NAT
Relays
Servers
Switches
Throughput
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Summary:NAT (Network Address Translation) is well-known as one of the short-term solutions of IPv4 address exhaustion. NAT is a technique that shares a single IP address in several PCs, and is widely used for alleviating the IPv4 address exhaustion and as a security solution. However, when a backbone network has access control function for PCs based on their IP addresses, it cannot identify the PCs under a NAT router since their original IP addresses are hidden by the NAT router. In this research, we focus on MAC address which identifies PC at datalink layer and propose a NAT router which relays the MAC addresses of PCs inside of a LAN to the outside. Since the source MAC addresses of packets sent from PCs are preserved even after being relayed by the NAT router, a LAN access control server outside of the NAT router can still identify these PCs based on their MAC addresses instead of their IP addresses.
ISBN:1424475260
9781424475261
DOI:10.1109/SAINT.2010.97