I run DNS on a VPS for myself and a few friends. Due to having too many cooks in the kitchen, we left unbound accepting from 0.0.0.0. Now I’m getting crushed by DNS lookups for the traditional “big” response names…. but from many many sources. ELI5 – am I part of a DDoS against 100s … Read More “ELI5 – why is a DNS amplification attack against many sources a thing?” »
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submitted by /u/Aeyoun [link] [comments] Powered by WPeMatico
I am troubleshooting a very strange DNS resolution issue, I’m running a DNS server using PowerDNS (pdns.x86_64 3.4.11-1.el7), and when querying domains hosted on the server through the OpenDNS public resolver (208.67.222.222), I get a SERVFAIL sometimes. This does not seem to happen with other resolvers. Here is how you can reproduce the issue: watch … Read More “PowerDNS Weird Resolution Problem” »
used to, I would simply change (on Mac FYI) my DNS server to google’s public ones and BAM problem solved. Now when I try that, my browser gives me a message saying that it cannot connect to the DNS. Can anybody help me with this? submitted by /u/mr_sc00ty [link] [comments] Powered by WPeMatico
Given a record or records, how do I tell what is the parent zone but isn’t a TLD, gTLD or second level domain? E.g.: www.example.com test.www.example.com www.example.co.jp wibble.example.fnd.br I am trying to write code for this and I’m not sure how to it normally using DNS / Whois. I’ve seen some code which naïvely assumed … Read More “Trace a record back to it’s zone.” »
I recently moved a website to a new host and updated the nameservers, but found I couldn’t access the site. After a fair amount of troubleshooting it turns out our ISPs DNS (Virgin) won’t resolve the name servers – I realised this after changing to the open DNS on my computer which resolved the problem … Read More “Website not accessible through virgin DNS” »
Based on what I read on their site, it’s basically similar to Cloudflare’s CNAME flattening? Is that correct? submitted by /u/zylai [link] [comments] Powered by WPeMatico
It’s been working for a few weeks but is slow all of a sudden. Pi Hole is running in a VM on my desktop with its own IP of 192.168.1.5. Router is configured with primary DNS of 192.168.1.5. I’ve also got 8.8.8.8 and 8.8.4.4 routing through 192.168.1.1 so that my Chromecast gets filtered through the … Read More “Set up Pi Hole for adblocking, getting slow name resolution response.” »
I have a nighthawk R6700 router. It supports VPN and dynamic DNS. I have both enabled and I am using no-ip. I am changing my DNS to open DNS and it says it needs to be kept updated because I have a dynamic Ip. Would the no-ip settings in my router not take care of … Read More “Need clarification on Open DNS and no ip” »
submitted by /u/based2 [link] [comments] Powered by WPeMatico