There are still some issues holding SIP back, including lack of support for some of the phone network's features and billing interfaces - and the fact that many enterprise firewalls block the traffic streams that SIP generates.
Some network infrastructure and security vendors have pointed out, however, the problems of ensuring that antivirus signatures are kept up to date, that systems software is at the appropriate release level and that personal firewalls have not been...
The default settings will also have all ports closed, except when an application needs to send data through - with the idea of scuppering the zombie-making virus plagues of late. David Overton, technical specialist for Microsoft, said the number of...
Cisco Systems is set to announce plans to spend $31m on a small start-up called Orative, a move meant to help Cisco extend its Unified Communications software to mobile devices. Cisco's Unified Communications software suite, announced earlier this...
Cisco suggests on its website that network administrators apply access control lists on routers, switches and firewalls that filter traffic to vulnerable conference stations and IP phones so that traffic is only allowed from stations that need to...
Rick McConnell, vice president and general manager of Cisco's Unified Communications division, said the software suite no longer requires a router for connections from a remote location, such as a home.
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