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Fidel Castro 'relaxed, cogent' in rare TV interview
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In his most prominent interview in years, 83-year-old Fidel Castro is "speaking slowly" but "appears relaxed and cogent," the Associated Press is reporting.

Castro, the communist revolutionary who ruled Cuba for nearly 50 years, has been out of the spotlight since he handed power to his brother, Raul, after undergoing emergency intestinal surgery in 2006. His appearance on the Round Table is being broadcast live on Cuban TV and radio.

Castro will be talking about his theory that the world is on the verge of nuclear war, thanks to the conflict between the United States and Iran, Reuters says.

"The empire" — Castro's euphemism for the United States — "is at the point of committing a terrible error that nobody can stop. It advances inexorably toward a sinister fate," he wrote in his July 5 column for Granma, the Communist Party newspaper. Read it in English or Spanish.

Meanwhile, the first 11 of 52 political prisoners Cuba has agreed to release will leave for Madrid tonight. They are among 20 prisoners who will resettle in Spain as part of Cuba's largest release of dissidents in a decade.

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 Gingrich to 'consider seriously' running for president
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Newt Gingrich, the former U.S. House speaker, tells the Associated Press he's seriously considering seeking the 2012 Republican presidential nomination and will announce his decision in February or March.

"I've never been this serious," Gingrich, 67, said. "It's fair to say that by February the groundwork will have been laid to consider seriously whether or not to run."


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Salazar issues new moratorium on deep-water drilling
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Hoping to side-step judicial objections, the Obama administration has issued a new moratorium on deep-water drilling that is not based on depth. The ban runs through Nov. 30.

In announcing the moratorium, Interior Secretary Ken Salazar said a pause is still needed to ensure that drillers implement new safety measures and are prepared to handle spills.

The moratorium applies to any deep-water floating facility with drilling activities. A previous moratorium that has been struck down by two federal courts applied to waters deeper than 500 feet.

Read the Interior Department's news release here.

In late May, President Obama suspended drilling for six months at 33 wells in the Gulf of Mexico and blocked new permits. A federal appeals court upheld a lower court's rejection of that moratorium last week.

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VoIP security - The dos and don'ts of VoIP security

Though there is precious little evidence of VoIP security attacks, organisations cannot afford to be complacent. Make no mistake, says Anthony Plewes, VoIP is an attractive target for hackers and malware writers.


To demonstrate the potential danger that enterprises with unsecured VoIP systems face, the Voice over IP Security Association (Voipsa) has published a list of publicly available tools that target VoIP applications. There are signs hackers are now turning their attention to voice over IP and most security commentators believe the first major attacks will occur over the next six to 12 months.

This means all enterprises need to ensure their VoIP infrastructure is protected, though this needn't be an onerous undertaking.


The simple fact that VoIP now typically comes under the aegis of the IT department should in fact help security. Although running proprietary operating systems, PBXs were in fact open to a large range of security attacks. It was generally just a little harder to access and required specialised knowledge.

While VoIP has increased the number of people able to exploit a corporate phone system, the tools and expertise to protect the technology have also been improved.

VLANs
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The first step for VoIP security is to follow data networking best practice. Ovum analyst Graham Titterington says: "Most security in VoIP is a question of good network security and housekeeping."

Enterprises should deploy the voice traffic on a separate virtual LAN, or VLAN, from the data traffic. This helps protect the voice service if there is a denial of service attack on the data network.

Chris Whitwood, network manager at University College Falmouth, which has deployed IP telephony, says: "Denial of service is a particular problem for VoIP as it can completely destroy your telephony service. To protect against this, enterprises need to use security such as intrusion prevention systems and have a well-segmented network using VLANs."

VLANs need to be properly architected to prevent packets jumping from one VLAN to the other. However, even if they are, hacking tools are available that can make packets do just that. Additional tools that will help networks in case of any attack are intrusion detection and prevention systems, which scan for rogue incoming packets, and straightforward antivirus software which can help prevent any known threats from disrupting the network.