Do some tests on DNS resolution

• rnr:

  dig @1.1.1.1 serie-ous.style soa
  ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39650
  ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
  serie-ous.style.        86400   IN      SOA     serie-ous.style. hostmaster.serie-ous.style. 2024040201 10800 3600 604800 3600
  ;; SERVER: 1.1.1.1#53(1.1.1.1)

• rowlf:

  dig @1.1.1.1 serie-ous.style soa
  ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 7513
  ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
  ;; SERVER: 1.1.1.1#53(1.1.1.1) (UDP)

  10 minutes later:

  dig @1.1.1.1 serie-ous.style soa
  ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37519
  ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
  serie-ous.style.	86400	IN	SOA	serie-ous.style. hostmaster.serie-ous.style. 2024040201 10800 3600 604800 3600
  ;; SERVER: 1.1.1.1#53(1.1.1.1) (UDP)

• zoot:

  dig @1.1.1.1 serie-ous.style soa
  
  ; <<>> DiG 9.16.48-Debian <<>> @1.1.1.1 serie-ous.style soa
  ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24653
  ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
  serie-ous.style.	86400	IN	SOA	serie-ous.style. hostmaster.serie-ous.style. 2024040201 10800 3600 604800 3600
  ;; SERVER: 1.1.1.1#53(1.1.1.1)

• rnr:

  dig @8.8.8.8 serie-ous.style soa
  
  ; <<>> DiG 9.16.48-Debian <<>> @8.8.8.8 serie-ous.style soa
  ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 41930
  ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
  serie-ous.style.        21600   IN      SOA     serie-ous.style. hostmaster.serie-ous.style. 2024040201 10800 3600 604800 3600
  ;; SERVER: 8.8.8.8#53(8.8.8.8)

• rowlf:

  dig @8.8.8.8 serie-ous.style soa
  ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12746
  ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
  serie-ous.style.    21600    IN    SOA    serie-ous.style. hostmaster.serie-ous.style. 2024040201 10800 3600 604800 3600
  ;; SERVER: 8.8.8.8#53(8.8.8.8) (UDP)

• zoot:

  dig @8.8.8.8 serie-ous.style soa
  ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 62797
  ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
  serie-ous.style.	21600	IN	SOA	serie-ous.style. hostmaster.serie-ous.style. 2024040201 10800 3600 604800 3600
  ;; SERVER: 8.8.8.8#53(8.8.8.8)

• rnr
  • Debian 12 VM (home)
  • port forwards inbound
  • no restrictions outbound
• rowlf
  • Debian 12 VM (DreamCompute)
  • no external firewall
  • OpenStack security groups and ufw
• zoot
  • Debian 12 VM (Hetzner)
  • no external firewall
  • security groups and ufw