The Lippis Report

May 7th, 2007

By Ingate Systems

This is a great paper that dives into the firewall/NAT traversal issue. The paper provides solid alternatives and solutions to the problem so that Session Initiation Protocol (SIP) sessions can be supported throughout an enterprise. For background on the firewall/NAT traversal issue: SIP-based communication does not reach users on a LAN behind firewalls and Network Address Translation (NAT) routers automatically. Firewalls are designed to prevent inbound unknown communications and NAT stops users on a LAN from being addressed. Firewalls are almost always combined with NAT and typically do not support SIP properly.

May 7th, 2007

By Juniper Networks

Geographically dispersed workers and consolidation of network resources are some of the trends fueling the growth of IP telephony in today´s enterprises. Yet to reap the benefits of IP telephony, enterprises must be able to support its unique requirements. This white paper discusses Juniper´s unique ability to provide the security, availability, and performance demanded by IP telephony applications. The white paper also looks at real-world examples of the needs of IP telephony users in the enterprise, including the headquarters-based campus worker, branch office user, tele-worker, and mobile worker.

May 7th, 2007

As wireless LANS become more prevalent in enterprises, however, legitimate concerns about security and reliable service must be addressed. Today more than ever, it is crucial that key mobile business applications are delivered securely and scaleably to employees and business partners. As a result, for the wireless, as well as for the wired LAN, IT administrators need to establish and implement security and application availability policies that facilitate these productivity-enhancing networks.