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I've recently learned about DNS supporting SRV records, which identify what port, and what protocol should be used for a given service. For example _http._tcp.example.com SRV should return a port, and an A/AAAA record where the client should be opening a connection which intends to access HTTP service on example.com using TCP . How widely is this supported?
Asked · Jul 5
answered · Jul 5
Our trainers experience bad internet connections at some schools. I would like to provide them with a "mobile" (as in take it on the train) version of our platform running on a laptop, which the students can connect to directly via a private WiFi network. "The internet in a suitcase". Equipment: Access Point ( https://store.ui.com/collections/unifi-network-w
I started recently to learn about DNS, and I got stuck when using dig command in Linux. More exactly, I'd like to see the authoritative name servers (their names or IP addresses) that hold the answers to my DNS queries and I don't know how. As you probably already know, the dig's command output has 5 sections: HEADER, QUERY, ANSWER, AUTHORITY and ADDITIONAL.
In my internal work network, whenever I launch dig against a particular hostname, I get result similar to this: ;; ANSWER SECTION: some.internal.host.com. 10 IN A 10.210.54.121 If I keep spamming the same dig some.internal.host.com command, the response always has a single A record, but the IP address is changing between calls. I assume it is some form of lo
Suppose that test.example.com don't exists and gives NXDOMAIN when runnning dig on it , but i know that subdomain.test.example.com exists and gives NOERROR when doing the same, is there a way to check that a deep subdomain exists even though the intermediate subdomain may not be there necessarily. Specifically, I'm looking for hints when probing or querying