Information about DNS and network
Got unbound set up at home for recursive queries, but I need to verify how it handles geo-specific resolutions without messing with my actual location. VPNs are clunky for this. Been reading about Residential Proxies to pull IPs from different spots easily. Has anyone scripted this for testing? Any gotchas, like latency killing the results? … Read More “Geo-testing DNS resolvers, proxies a good call?” »
Hey I’ve apparently got a weird one here – wondering if anyone is familiar with CAA where the CNAME and the target have different CAA records on them. I know the general concept is that CAA will follow the CNAME, but I’m hoping for answers for specific scenarios. Specifically: example1.domain.com CNAME > target1.clash.net example1.domain.com CAA … Read More “CNAMEs with Different CAA Records” »
Hello, i have the following usecase: I own a domain on Godaddy mydomain.com . mydomain.com uses xxx.ns.cloudflare.com as NS records, both as NS records in the mydomain.com zone and in the .com nameservers, via Godaddy panel -> assign nameservers ( https://www.godaddy.com/help/edit-my-domain-nameservers-664 ). So, both dig mydomain.com NS @xxx.ns.cloudflare.com and dig mydomain.com NS @a.gtld-servers.net return the … Read More “Do I need “custom hostnames” for nameservers if the domain does not use the same nameservers for itself?” »
Hi, I’ll be the first to admit I’m a bit of a beginner with DNS, so apologies ahead of time for the noviceness. We have a customer with two subnetworks (192.168.2.0/24) that contains an Active Directory Domain Controller handling DHCP in the same subnetwork that several workstations lie within. We have another subnetwork (192.168.3.0/24) that … Read More “DNS not working for Internal Lookups on Different Subnetwork” »
I bought a used iPad on backmarket, all seems fine EXCEPT every website I visit (Apple.com, Sony.com, etc) says “This Connection is Untrusted.” I’ve erased all content and settings, reset the network settings, verified the time/date is correct, verified there’s no VPN, proxy is off, tried both automatic dns and manual (8.8.8.8). I’m connected to … Read More “Bought Used iPad / All sites untrusted connections” »
submitted by /u/HozienLim [link] [comments] Powered by WPeMatico
Hi, I have been writing backend code for half a decade, but every time I run into a DNS related issue, I find myself embarrassed and often handicapped by my limited experience with the thing. For example, the other day a vpn would not let me `curl` an API. So a college suggested me `dig … Read More “How to learn more about dns” »
So it has been widely reported that the trigger of the issue was a ‘DNS resolution issue within dynamoDB’ however I have seen little additional detail. ‘Blame the DNS guy and every one will nod their heads and agree cause it is always DNS’ seems to be the messaging. I am sure this was beyond … Read More “Any more detail on cause of this weeks AWS ‘DNS Issue’” »
Chris Greer (Wireshark expert) already has some DNS-related content on his YouTube channel but it sounds like more is in the way. submitted by /u/wreditor [link] [comments] Powered by WPeMatico
Hi all, I have a problem, and it’s of course DNS… I have a Zabbix installation running inside an LXC container managed by Proxmox. I know it’s a well known fact that Zabbix hammers DSN servers, and as a mitigation, the most used solution is DNS caching through systemd resolved or dnsmasq. Well, here’s my … Read More “LXC not using DNS cache” »