Need to accept content filtering? Surely not ...

[0815]

I have been a customer for I dont know how long and always been able to access services across the web and on my own infrastructure for years. DUe to some recent change O2 is now obviously enforcing content blocking which for me is unacceptable. Requesting content blocking to be disabled on my account lead to an agent claiming this may be related to network settings or even the SIM - surely not as it happens on DNS level (as soon as I circumvent O2 network resolution I can perfectly access all services). 

This is a change in service as it previously worked petfectly fine and I have plenty of access logs to prove it.

Surely this is a reason to cancel my contract and transition to a mobile provider not enforcing content filtering to customers and not being able to remove them?

[madasaf1sh]

@0815 

You can use private DNS providers on Android by using a Private DNS provider, you just need the HostName of the DNS Providers DNS servers (why it cant use IP is another question). 

Apple use Private IP, which causes problems with some Apps and Services, due to how it routes traffic and is opt in and pay for service, which is glorified VPN, and a lot of people and networks have issues with it..

Are you able to access the service using a Broadband Provider or another Mobile Network.. 

This could also be your Destination Hosting provider or your IP been blocked for malicious traffic, such as DDoS, Port Flooding, even DNS floods... 

What Ports are you trying to connect on? Is it specific services??

You havent explained which DNS provider you are having trouble with, and a block page is just an HTTP Redirect and doesnt prove anything, hence the packet capture to see where the traffic is been redirected within the OSI model, whether it is at Transport Layer or at Session or Presentation Layer...  

And jut to add it is not a change of Contract, and you cant cancel, as o2 will claim it due to xyz on there network, and they are allowed to put mitigations in place..

[0815]

mate, all other networks mobile and broadband dont have any issues nor block, checking common blocklists neither shows a hit and as mentioned it worked fine until probably 6 weeks ago, occasionally it works intermittently then it is back to the O2 blockpacke - on IOS the setting for DNS is provided through the network settings and only by various helpers (which basically place a VPN profile in place to overwrite it) can be altered. So whatever the network provides, redirecting the O2 blockpage is obviously the root cause of this issue. its a network content filter, maintained by O2.

regarding the host, I obviously maintain and manage it, reverse proxy with different services - even if there were and there arent any illegal services - O2 wouldnt be able to inspect it due to HSTS and further secret sauce ...

[madasaf1sh]

Its not obvious, as people host things behind TOR, or on dodgy hosting providers... 

Your only option with o2 is to pay off your contract and move to another Network, where you might also get blocked.. 

No one from o2 is going to help you, from here, and o2 can block traffic they don't want on their network and at the end of the day there network there rules...