Information about DNS and network
I blackhole around 150k domains with unbound. server: local-zone: “x.domain.com” redirect local-data: “x.domain.com A 0.0.0.0” … It takes roughly 500M RAM. Is there a way to optimize memory usage? submitted by /u/ttl256 [link] [comments] Powered by WPeMatico
Looking for the best dns server to use. we are in Mexico and would like to watch bbc and Netflix. Who is getting through the dns blocks? submitted by /u/gringainparadise [link] [comments] Powered by WPeMatico
submitted by /u/Sporkyads [link] [comments] Powered by WPeMatico
Hello, I’ve been looking into whether I want to add Unbound to my local services or not, in particular to get Qname minimization. I’ve gathered that this technique can improve your privacy, but there’s one part that’s puzzling me about that statement… So the way I understand this to work, this technique minimizes the queries … Read More “Qname, privacy, and encryption (Doesn’t Qname cause encryption to get dropped?)” »
I have a website that’s hosted by odoo . They use multiple servers so don’t have a specific ip. So far the cname is configured (www.example.com) points to (example.odoo.com) so I can connect using the www. Subdomain in both http and https. The naked domain won’t work, and as I don’t have a fixed ip … Read More “Redirect naked domain.” »
I’ve been researching about DNS and caching a lot lately. I want to learn more about how Caching works. I understand that the local DNS caches IP addresses for recently accessed sites however does the local host, the root DNS, the Top Level Domain (TLD) DNS and the authoritative DNS also cache any information, and … Read More “Do all DNS servers cache or just the local DNS?” »
I have the following setup in a lab: “test.site” will resolve to 5.5.5.1 via DNS server 5.5.5.95. The response will be set with a DNS TTL of 5 seconds. I have confirmed in dig this functions as expected: root@GSLB-client:~# dig test.site ; <<>> DiG 9.16.1-Ubuntu <<>> test.site ;; global options: +cmd ;; Got answer: ;; … Read More “Browsers not honoring DNS TTL?” »
While setting up a CNAME record, is it mandatory to add A record which contains the IP address corresponding to the CNAME. For e.g.I have a host name abc.com whose alias is xyz.com and the IP address of xyz.com is d.e.f.g. Now for anyone resolving abc.com should I set up to return both CNAME and … Read More “DNS and CNAME records” »
submitted by /u/shreyasonline [link] [comments] Powered by WPeMatico
I’m working with a fairly new environment and the DNS server (on 2019 DC) has no timestamp column! (wtfers!) To make matters worse, it’s not an option under the add/remove columns interface, and I can’t seem to locate a fix – just a couple of others posting about experiencing it as well. Anyone run into … Read More “Server 2019 DNS – no timestamp column bug” »