https://community.o2.co.uk/t5/Android/cctv/m-p/1576705#M79348 <P><a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/4966912">@Andyroxy</a>&nbsp;</P><P>No idea which ones are blocked but I use Port 8000 on my Hikvision</P> Sun, 02 Oct 2022 12:54:40 GMT MI5 2022-10-02T12:54:40Z https://community.o2.co.uk/t5/Android/cctv/m-p/1576697#M79345 <P>Hi</P><P>I have recently switched over to a o2 sim from a virgin one as part of my new deal with virgin.</P><P>The problem i have got now is that i cannot access my cctv cameras which are wired up to my reolink nvr when i am away from home over the o2 network.</P><P>I can access my indoor wifi camera with no problem.</P><P>Has anybody got any ideas on this?</P><P>Thanks</P> Sun, 02 Oct 2022 12:18:16 GMT https://community.o2.co.uk/t5/Android/cctv/m-p/1576697#M79345 Andyroxy 2022-10-02T12:18:16Z https://community.o2.co.uk/t5/Android/cctv/m-p/1576700#M79346 <P><a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/4966912">@Andyroxy</a>&nbsp;</P><P>It is known that O2 block some ports used by CCTV systems so you'll need to change the ports used in your NVR.</P> Sun, 02 Oct 2022 12:29:57 GMT https://community.o2.co.uk/t5/Android/cctv/m-p/1576700#M79346 MI5 2022-10-02T12:29:57Z https://community.o2.co.uk/t5/Android/cctv/m-p/1576702#M79347 <P>Hi</P><P>Have you got any ideas which ports are blocked?</P><P>Thanks</P> Sun, 02 Oct 2022 12:33:52 GMT https://community.o2.co.uk/t5/Android/cctv/m-p/1576702#M79347 Andyroxy 2022-10-02T12:33:52Z https://community.o2.co.uk/t5/Android/cctv/m-p/1576705#M79348 <P><a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/4966912">@Andyroxy</a>&nbsp;</P><P>No idea which ones are blocked but I use Port 8000 on my Hikvision</P> Sun, 02 Oct 2022 12:54:40 GMT https://community.o2.co.uk/t5/Android/cctv/m-p/1576705#M79348 MI5 2022-10-02T12:54:40Z