[CentOS] DNS forwarding vs recursion
John R Pierce
pierce at hogranch.comMon Apr 1 18:17:10 UTC 2013
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On 4/1/2013 6:11 AM, Michael H. Warfield wrote: > it's also very important to implement BCP (Best Common Practice) 38. > BCP 38 recommends router egress filtering. That is, you only route out > what will route back in. That prevents you (or any of your customers) > from being a spoofing source. of course, this breaks a bunch of types of ad-hoc multihoming, where you have multiple ISPs, each with their own subnets, and you're trying to load balance your outbound traffic. -- john r pierce 37N 122W somewhere on the middle of the left coast
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