Events & News
Colloquium
| Category | Lecture |
| Date | Thursday, May 6, 2010 |
| Time | 10:00 am |
| Location | GS 942 |
| Details | Committee: Beichuan Zhang John Hartman Chris Gniady |
| Speaker | Arun Madhavan |
| Title | MS Thesis Defense |
| Affiliation | Computer Science Department-University of Arizona |
NAT Traversal through Tunneling
Abstract: Network Address Translation (NAT) is widely prevalent solution adopted to alleviate the IPv4 address exhaustion problem. Due to the use of private IP addresses on hosts behind the NAT, it is not possible for external hosts to initiate communication with these hosts. This poses a hurdle to many emerging applications, such as VoIP and P2P. Although a plethora of NAT traversal solutions have been proposed in recent years, they suffer from being application-specific , complex, or requiring some
behavioral compliance from the NAT.
The work presents an simple technique that is generic, works with nested
NATs, is incrementally deployable and only expects minimalistic common behavior across all NAT implementations. The design includes the use of UDP tunnels and a sequence of NAT addresses and private IP addresses to uniquely identify a host. Simple and incrementally deployable changes are proposed to DNS to learn the addresses.