Title :
The problems and their solutions when using SIP in NAT environment
Author :
Bae, Kimoon ; Cho, Kyuseob
Author_Institution :
Dept. of Inf. & Commun. Eng., Sungkyunkwan Univ., Suwon, South Korea
fDate :
Nov. 30 2010-Dec. 2 2010
Abstract :
As the number of Internet users increases rapidly, IPv4 address shortage has been developing. The shortage can be completely solved by using IPv6, but it takes too much time to replace all the equipments in the world. Therefore, NAT is used as a temporally solution. NAT reduces the use of address by connecting a local address to a public address only when it is necessary, which can be a good solution for server-client models, but causes NAT-Traversal problem in peer-to-peer communication such as VoIP using SIP in NAT environment. STUN and TURN are used to solve NAT-Traversal problem. This document explains how STUN and TURN are applied to SIP to solve problems when using NAT and points out problems that STUN and TURN cause, and suggests a way to improve.
Keywords :
IP networks; peer-to-peer computing; IPv4 address shortage; IPv6; Internet user; NAT environment; NAT-traversal problem; SIP; VoIP; peer-to-peer communication; public address; server-client model; IP networks; Internet; Peer to peer computing; Problem-solving; Protocols; Relays; Servers; NAT; NAT-Traversal; SIP; STUN; component;
Conference_Titel :
Computer Sciences and Convergence Information Technology (ICCIT), 2010 5th International Conference on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-8567-3
Electronic_ISBN :
978-89-88678-30-5
DOI :
10.1109/ICCIT.2010.5711206
