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messageRe: IP address blocked!
Posted by Otta 23 December, 2014 09:09

I too am BT and was getting that same error message on home PC last night.

messageRe: IP address blocked!
Posted by Administrator 23 December, 2014 11:48

Is that the Cloudflare error message?

So to clarify what happened. I banned someone (who was quite lonely) by blocking their single IP using the forum's software.
A few people with BT IP addresses said they had issues posting, viewing etc.
I removed the IP ban and it seemed to be ok.
I had to ban said person again so I blocked their IP using a different method, CloudFlare
A few people with BT IP addresses said they were being blocked by CloudFlare
I've now removed the CloudFlare block.

It seems that the BT's DNS are giving people (in the same area?) the same IP address, or that the lookup table DNS is confusing BT's IP as the same. Or something else. I'm still scratching my head over this one.

--------------------
The Administrator
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messageRe: IP address blocked!
Posted by DulwichFox 23 December, 2014 14:09

BT Shares its IP Addresses

IP address translation/sharing


What is it?

There are only a certain number of IP addresses and due to the expansion of the internet, these are running out worldwide. Eventually they'll be replaced by a new version. Until this time, addresses will need to be shared to ensure everyone can access a reliable broadband service.

We're preparing for this transition period by gradually introducing IP address translation/sharing whilst continuously testing and learning. The change is being introduced to BT Total Broadband Option 1 customers.

If you're sharing an IP address, your internet traffic goes through an extra translation step in our network before connecting to the internet to change it from a private address to a common public one.



[bt.custhelp.com]

Hope this may through some light.

Basically if you block anyone on a Shared IP you will block other users too.

I may not of explained myself some time back when I mentioned IPs being block allocated
but this is what I was trying to get across.

DulwichFox.

messageRe: IP address blocked!
Posted by Administrator 23 December, 2014 14:20

Ahh, that is most useful thanks. Technically an IP block allocation is a range e.g. 213.98.56.00/255 (so numbers from 0 to 255 at the end) and I wasn't blocking a range.

So the lonely troll is a BT Total Broadband Option 1 customer which means I can drop them a line and have a word.

Thanks for pointing that out DulwichFox, I think you may have found out the reason.

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messageRe: IP address blocked!
Posted by Otta 23 December, 2014 14:45

Foxy on the case. He does have his uses winking smiley

messageRe: IP address blocked!
Posted by DulwichFox 23 December, 2014 16:29

It was impossible to type all that info from my little phone.

I could only add all that stuff when I got PC access back up.

So there you go

Foxy

messageRe: IP address blocked!
Posted by Loz 23 December, 2014 21:21

Yep - that looks like it, Foxy. Reading a bit deeper (that'll be the geek in me) the trial grouped 10 users together, but it seems to have rolled out now without saying how many share a single IP. From the EDF experience, looks like the answer is 'lots'.

So now you have a public IP address that NATs to an internal BT IP address for your router, that NATs to another internal IP on your home network. Complicated!

It'd mess me around, as I have my NAS exposed to the internet via port forwarding, and this would make that impossible. Fortunately I'm on Virgin and they're not doing this yet.

On the bright side, anyone using bittorrent with this is now a bit harder to trace.

messageRe: IP address blocked!
Posted by nxjen 24 December, 2014 07:38

The techie stuff is way over my head but does this mean, as one of those affected, that I can't be banned without the whole group being banned? Hmmmm ...

messageRe: IP address blocked!
Posted by DulwichFox 24 December, 2014 11:17

nxjen Wrote:
-------------------------------------------------------
> The techie stuff is way over my head but does this
> mean, as one of those affected, that I can't be
> banned without the whole group being banned?
> Hmmmm ...


No. Your account can be deactivated without blocking your IP.
IP blocking prevents any spammer coming back with a new username.

BT say this is a temporary measure. No idea how long that may be.

DulwichFox

messageRe: IP address blocked!
Posted by Loz 24 December, 2014 13:34

DulwichFox Wrote:
-------------------------------------------------------

> BT say this is a temporary measure. No idea how
> long that may be.

It is until the bring IPv6 in. i.e. a few years.

messageRe: IP address blocked!
Posted by aquarius moon 28 December, 2014 22:27

testing

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