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NAT/Firewall Traversal: Issues and Solutions

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firewalls

Overview Network Address Translators (NATs) and Firewalls are increasingly used in all type of networks because of various reasons. However, NATs and firewalls are limiting some kind of communications and they are known to cause problems for applications that carry IP addresses in the payload which are mainly related to multimedia communications and Voice over IP. Nowadays there are many techniques and solutions are used to allow those increasingly popular applications to work through NATs and Firewalls. Examples of such applications are NAT/Firewall NSLP, STUN, Application Level Gateways, CODO, etc. This paper takes a look on a few exscinding and proposed solutions and studies their features, advantages and shortcomes.

Further White Paper Details
Publisher	Helsinki University of Technology	File Format	PDF
Date Published	December 2006
Format	White Papers
Topics	Firewalls, Security Tools

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