Há alguns dias duas dessas câmeras começaram a apresentar defeito, sendo uma do modelo VIP S3020 G2, e a outra do modelo VIP 3220B. Elas aleatoriamente perdem a conectividade web e a comunicação com o NVR. Naturalmente já testei os cabos e a utilização de outras portas no switch.
Abaixo, é possível verificar que, embora respondam ao comando ping, vários pacotes são perdidos. Verificando através do nmap, observo que, mesmo utilizando todas as portas TCP e UDP padrões, não há escuta na porta 80 e, embora não exista no manual opção para ativá-la, a câmera está ouvindo na porta 23.
Código: Selecionar todos
root@router:~# ping -4 camera2.annefrank.com.br
PING camera2.annefrank.com.br (10.10.4.12): 56 data bytes
64 bytes from 10.10.4.12: seq=0 ttl=64 time=0.512 ms
64 bytes from 10.10.4.12: seq=1 ttl=64 time=0.582 ms
64 bytes from 10.10.4.12: seq=2 ttl=64 time=0.447 ms
64 bytes from 10.10.4.12: seq=3 ttl=64 time=0.568 ms
64 bytes from 10.10.4.12: seq=4 ttl=64 time=0.503 ms
64 bytes from 10.10.4.12: seq=5 ttl=64 time=0.496 ms
64 bytes from 10.10.4.12: seq=24 ttl=64 time=2759.615 ms
64 bytes from 10.10.4.12: seq=25 ttl=64 time=1759.989 ms
64 bytes from 10.10.4.12: seq=26 ttl=64 time=759.949 ms
64 bytes from 10.10.4.12: seq=27 ttl=64 time=0.553 ms
64 bytes from 10.10.4.12: seq=28 ttl=64 time=0.483 ms
64 bytes from 10.10.4.12: seq=29 ttl=64 time=0.495 ms
64 bytes from 10.10.4.12: seq=30 ttl=64 time=0.489 ms
64 bytes from 10.10.4.12: seq=31 ttl=64 time=0.496 ms
64 bytes from 10.10.4.12: seq=32 ttl=64 time=0.481 ms
64 bytes from 10.10.4.12: seq=33 ttl=64 time=0.698 ms
64 bytes from 10.10.4.12: seq=34 ttl=64 time=0.480 ms
^C
--- camera2.annefrank.com.br ping statistics ---
35 packets transmitted, 17 packets received, 51% packet loss
round-trip min/avg/max = 0.447/310.990/2759.615 ms
Código: Selecionar todos
root@router:~# nmap -4 -Pn camera2.annefrank.com.br
Starting Nmap 7.80 ( https://nmap.org ) at 2022-11-04 10:35 -03
Nmap scan report for camera2.annefrank.com.br (10.10.4.12)
Host is up (0.00044s latency).
Other addresses for camera2.annefrank.com.br (not scanned): 2600:70ff:c84c::12
Not shown: 998 closed ports
PORT STATE SERVICE
23/tcp open telnet
3800/tcp open pwgpsi
MAC Address: 58:10:8C:47:24:57 (Intelbras)
Nmap done: 1 IP address (1 host up) scanned in 1.24 seconds
root@router:~#
Código: Selecionar todos
root@router:~# ping -4 camera13.annefrank.com.br
PING camera13.annefrank.com.br (10.10.4.23): 56 data bytes
64 bytes from 10.10.4.23: seq=0 ttl=255 time=0.514 ms
64 bytes from 10.10.4.23: seq=2 ttl=255 time=0.433 ms
64 bytes from 10.10.4.23: seq=3 ttl=255 time=0.719 ms
64 bytes from 10.10.4.23: seq=4 ttl=255 time=0.676 ms
64 bytes from 10.10.4.23: seq=5 ttl=255 time=0.666 ms
64 bytes from 10.10.4.23: seq=6 ttl=255 time=0.588 ms
64 bytes from 10.10.4.23: seq=7 ttl=255 time=0.653 ms
64 bytes from 10.10.4.23: seq=8 ttl=255 time=0.961 ms
64 bytes from 10.10.4.23: seq=9 ttl=255 time=0.549 ms
64 bytes from 10.10.4.23: seq=11 ttl=255 time=0.631 ms
64 bytes from 10.10.4.23: seq=12 ttl=255 time=0.549 ms
64 bytes from 10.10.4.23: seq=13 ttl=255 time=0.387 ms
64 bytes from 10.10.4.23: seq=15 ttl=255 time=0.484 ms
64 bytes from 10.10.4.23: seq=16 ttl=255 time=0.452 ms
64 bytes from 10.10.4.23: seq=17 ttl=255 time=0.611 ms
64 bytes from 10.10.4.23: seq=20 ttl=255 time=0.806 ms
64 bytes from 10.10.4.23: seq=21 ttl=255 time=0.615 ms
64 bytes from 10.10.4.23: seq=22 ttl=255 time=0.555 ms
^C
--- camera13.annefrank.com.br ping statistics ---
23 packets transmitted, 18 packets received, 21% packet loss
round-trip min/avg/max = 0.387/0.602/0.961 ms
Código: Selecionar todos
root@router:~# nmap -4 -Pn camera13.annefrank.com.br
Starting Nmap 7.80 ( https://nmap.org ) at 2022-11-04 10:41 -03
Nmap scan report for camera13.annefrank.com.br (10.10.4.23)
Host is up (0.00049s latency).
Other addresses for camera13.annefrank.com.br (not scanned): 2600:70ff:c84c::23
Not shown: 998 closed ports
PORT STATE SERVICE
80/tcp open http
554/tcp open rtsp
MAC Address: 24:FD:0D:A1:B0:FB (Unknown)
Nmap done: 1 IP address (1 host up) scanned in 32.32 seconds
root@router:~#