From aa3dff9ffae43b685208eaa4b9a7dc83c0fe61f7 Mon Sep 17 00:00:00 2001 From: Jet Hughes Date: Thu, 22 Sep 2022 20:04:33 +1200 Subject: [PATCH] vault backup: 2022-09-22 20:04:33 --- content/notes/dns.md | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 content/notes/dns.md diff --git a/content/notes/dns.md b/content/notes/dns.md new file mode 100644 index 000000000..7f8d96e38 --- /dev/null +++ b/content/notes/dns.md @@ -0,0 +1,26 @@ +--- +title: "dns" +aliases: +tags: +- cosc203 +--- + +record has four fields +- name +- value +- type +- ttl + +meaning of name an value are dependent on type + +Types +- A + - name - hostname + - value - ipv4 address for the hostname + - hostname to ipv4 mapping +- AAAA + - same as A but ipv6 +- NS + - name - domain (e.g., otago.ac.nz) + - value - hostname of authoritave DNS server that knows how to get the IP address for hosts in the domain + - used to route DNS queries further along th \ No newline at end of file