On 4/18/05, Mikael Abrahamsson <swmike@swm.pp.se> wrote:
It would be very interesting in seeing the difference in DNS traffic for a domain if it sets TTL to let's say 600 seconds or 86400 seconds. This could perhaps be used as a metric in trying to figure out the impact of capping the TTL? Anyone know if anyone did this on a large domain and have some data to share?
Our first foray into DNS was using a DNS server that defaulted to 86400 for new entries.. Not being seasoned, we left this alone.. Unfortunately, I don't have any hard data from that dark time in our past.. Windows 2000 DNS seems to set the ttl to 3600, which is a tad on the low side, I think... At least for mostly-static domains, anyways. But I believe the reasoning there was that they depended heavily on dynamic dns..
If one had to repeate the cache poisoning every 10 minutes I guess life would be much harder than if you had to do it once every day?
I dunno.. how hard is it to poison a cache? :)
-- Mikael Abrahamsson email: swmike@swm.pp.se
-- Jason 'XenoPhage' Frisvold XenoPhage0@gmail.com