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Why DNS Blacklists Don't Work for IPv6 Networks

All effective spam filters use DNS blacklists or blocklists, known as DNSBLs. They provide an efficient way to publish sets of IP addresses from which the publisher recommends that mail systems not ... read more

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Should You Allow Inbound E-mail Over IPv6?

Section 2.4 of RFC 5782, " DNS Blacklists ... IPv6 will not make spam a thing of the past. In fact, there is potential that the introduction of IPv6 may make spam more prolific for companies with IPv6 ... read more

Why You Shouldn't Worry About Switching to IPv6 Now

The only required change in this case happens at the firewall or router that connects the network to the Internet. This means that initially you don't need to switch all ... using the domain name ... read more

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Apple to iOS devs: IPv6-only cell service is coming soon, get your apps ready

NAT64 allows IPv6 applications to access IPv4 servers. Without these translators, IPv6 applications ask the DNS for IPv6 addresses to connect to, but obviously IPv4-only servers don't ... Network" ... read more

IPv6 DNS Blacklists Reconsidered

I opined about a year ago that DNS blacklists ... I don't know whether they currently configure their systems not to use caches, but if they don't, it would be technically straightforward. In a world ... read more

Infoblox Delivers IPv6 with DNS64

The migration to IPv6 is one that will likely take many years, which is why ... work with BIND as well as providing some performance improvements. DNS64 works by including both an IPv4 and an IPv6 DNS ... read more

IPv6 blacklisting: Will it be harder to fight spammers?

Why is there so much negative karma surrounding IPv6? Case in point, last week, a colleague of mine called, "Have you read the Register yet?" No, some of us have to actually work during the ... likely ... read more

Bringing DNS Security and Privacy to the End User

Authentication and encryption should start at the edge of the network ... but don’t forget some DNS resolvers don’t forward DNSSEC data, creating yet another hurdle. Let’s take a more detailed look at ... read more

Google, Microsoft, Netflix in talks to create shared list of IPv6 users

Google has said that the DNS Whitelist for IPV6 was the easiest way it could provide IPv6 services without blocking customers with broken IPv6 links. David Temkin, network engineering ... technologist ... read more

How (And Why) To Change Your DNS Server

Here's the thing: The servers that route your internet requests don't understand domain names like pcmag.com. They only understand numeric IP addresses like, or the longer numeric ... read more

Buyer's Guide: How to prepare your organisation for IPv6

In other words, there are no new ones to buy, which is why the advent ... one in Newbury and network POPs in Telehouse running on Brocade over a 10Gbps layer 4/6 network. The company began its IPv6 ... read more

World IPv6 Day looms: what might break (and how to fix it)

The routers that connected the meeting network ... DNS expert Cricket Liu is eager to see what comes out of World IPv6 Day. "We don't really know what's going to happen when AAAA records will be ... read more

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