Recent content by alastairstevenson

  1. alastairstevenson

    CCTV transmission system

    That might be a bit low for good quality 5MP video, depending on camera video settings and codec. The diagram shows a single 1Gbps fibre uplink from each building. Is that correct? That may get quite congested with 80-100 cameras aggregate plus multiple workstations traffic.
  2. alastairstevenson

    CCTV transmission system

    Add up the bitrates for each of the cameras connected to each PoE switch, to discover if the traffic level can be handled by the switch backplane and uplinks. The bitrate required for each camera will depend on how the camera video encoding is configured, and what codec is selected.
  3. alastairstevenson

    Alternative way of recovering HikVision NVR password

    The 'trojan horse method' of finding an NVR admin password depends on the fact that apart from the later versions of NVR firmware, it was the NVR admin password that was used to 'activate' an 'inactive' camera when first plugged in to an NVR PoE port. And then the backdoor vulnerability of...
  4. alastairstevenson

    Alternative way of recovering HikVision NVR password

    Let's hope so! The admin password for the MAIN DECK HIKVISION DS-2CD2232-I5 - 482311325 camera is 12345
  5. alastairstevenson

    FYI: FBI disrupts Chinese cyber operation

    No longer possible ...
  6. alastairstevenson

    restableser contraseña de un dvr marca epcom modelo:ev4004turbod

    Translation, for any help :
  7. alastairstevenson

    DS-2CD2342WD-I Password reset

    I was going to respond to the profile post - but I see you got it sorted.
  8. alastairstevenson

    Alert on simple contact closure. Any suggestions?

    How does that do recording? It seems just to be a set of USB controlled relays. Unless I've misunderstood the spec. Many cameras, and more NVRs, have the ability to trigger recordings from wired alarm inputs.
  9. alastairstevenson

    New Shed - Camera Suggestions

    OK, didn't see that.
  10. alastairstevenson

    New Shed - Camera Suggestions

    And unless because it's not yet completed, and none of the ties are yet in place, what's to stop the roof from simply lifting up / moving due to air pressure fluctuations from wind gusts?
  11. alastairstevenson

    Hikvision NVR 256-CH No enough network bandwidth

    There are 4 ethernet interfaces. If you can trunk them all, this will give you the needed capacity, and spread the load.
  12. alastairstevenson

    Hikvision NVR 256-CH No enough network bandwidth

    How are the NVR ethernet interfaces connected to your LAN / what is the capability of the LAN interface? Are you trunking the NVR ethernet interfaces / how many are connected?
  13. alastairstevenson

    Hikvision camera admin password reset tool

    The backdoor vulnerability that allowed a configuration file to be extracted without authorisation was fixed in firmware 5.4.5 and later. It looks like you have missed this vulnerability too ...
  14. alastairstevenson

    Flat Ethernet cable

    Yes indeed!
  15. alastairstevenson

    Flat Ethernet cable

    You've just provided way more free advertising than the original short post with the link did.
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