Hola. Perdón por la demora, no he podido realizar la prueba hasta hoy.
Sigue sin funcionar. Una petición de resolución de nombre por UDP en la red interna sigue funcionando:
bnt@deuterium:~$ ping 192.168.0.2
PING 192.168.0.2 (192.168.0.2) 56(84) bytes of data.
64 bytes from 192.168.0.2: icmp_seq=1 ttl=64 time=89.5 ms
64 bytes from 192.168.0.2: icmp_seq=2 ttl=64 time=54.4 ms
^C
--- 192.168.0.2 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1002ms
rtt min/avg/max/mdev = 54.436/71.990/89.545/17.554 ms
bnt@deuterium:~$ dig @192.168.0.2 +notcp fastpace.org A
; <<>> DiG 9.20.0-2ubuntu3-Ubuntu <<>> @192.168.0.2 +notcp fastpace.org A
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 11175
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: 573a7a07f921692a01000000676fef139150f16e5a3cc5bd (good)
;; QUESTION SECTION:
;fastpace.org. IN A
;; ANSWER SECTION:
fastpace.org. 604800 IN A 192.168.0.2
;; Query time: 24 msec
;; SERVER: 192.168.0.2#53(192.168.0.2) (UDP)
;; WHEN: Sat Dec 28 13:29:07 CET 2024
;; MSG SIZE rcvd: 85
bnt@deuterium:~$
Pero una petición de resolución vía UDP desde fuera de la red sigue fallando:
support@ip-10-90-0-10:~$ ping 2.139.156.78
PING 2.139.156.78 (2.139.156.78) 56(84) bytes of data.
64 bytes from 2.139.156.78: icmp_seq=1 ttl=53 time=48.3 ms
64 bytes from 2.139.156.78: icmp_seq=2 ttl=53 time=50.4 ms
64 bytes from 2.139.156.78: icmp_seq=3 ttl=53 time=49.8 ms
64 bytes from 2.139.156.78: icmp_seq=4 ttl=53 time=47.8 ms
64 bytes from 2.139.156.78: icmp_seq=5 ttl=53 time=50.2 ms
^C
--- 2.139.156.78 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4006ms
rtt min/avg/max/mdev = 47.846/49.320/50.446/1.037 ms
support@ip-10-90-0-10:~$ dig @2.139.156.78 fastpace.org A
;; communications error to 2.139.156.78#53: timed out
;; communications error to 2.139.156.78#53: timed out
;; communications error to 2.139.156.78#53: timed out
; <<>> DiG 9.18.28-0ubuntu0.20.04.1-Ubuntu <<>> @2.139.156.78 fastpace.org A
; (1 server found)
;; global options: +cmd
;; no servers could be reached
support@ip-10-90-0-10:~$
Las peticiones por tcp siguen funcionando:
support@ip-10-90-0-10:~$ dig @2.139.156.78 +tcp fastpace.org A
; <<>> DiG 9.18.28-0ubuntu0.20.04.1-Ubuntu <<>> @2.139.156.78 +tcp fastpace.org A
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 17320
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: aeeb7af53adbfcde01000000676fefe148bbe3cd891aac15 (good)
;; QUESTION SECTION:
;fastpace.org. IN A
;; ANSWER SECTION:
fastpace.org. 43200 IN A 2.139.156.78
;; Query time: 51 msec
;; SERVER: 2.139.156.78#53(2.139.156.78) (TCP)
;; WHEN: Sat Dec 28 12:32:33 UTC 2024
;; MSG SIZE rcvd: 85
support@ip-10-90-0-10:~$
Sea lo que sea, sigue impidiendo que la petición DNS por UDP, la normal, no llegue a mi servidor.