We are seeing a denial of service attack, which is causing more problems that usual, and this is disrupting traffic to some customers - but it is moving, and so different customers at different times. Obviously we are working on this, and unfortunately cannot say a lot more of the details.
At present, customers using relayed L2TP services (including data SIMs) to external IP addresses, and those accessing VoIP from external IP addresses, may be experiencing issues. IPv4 only - if you are able to use IPv6, please do. Access from customer lines should be unaffected.
Services are returning to normal for now. Thank you for your patience.
During the attack, external access to our LNSs (L2Tp relayed services) and VoIP may be limited. It is back at the moment.
As a side effect of today's DoS attacks, we're also experiencing intermittent failures of the telephones in the office - customers may experience difficulties placing calls into our office. We are aware and working on restoring this as soon as possible.
I am sorry we cannot go in to huge amount of detail on this, but we essentially having to go in to a sort of lockdown on external access to key services during an attack. We will be doing more planned work over the coming days to make this less and less disruptive, obviously, but at the end of the day a denial of service attack can impact any network of any size.
We're still monitoring carefully, obviously...
They are back, shields up!
VOIP customers accessing from non A&A addresses may want to restart asterisk if that is what you are using or restart your client.
L2TP relay customers should now be working
Brief issues on one LNS this evening, but sorted now.
For now, we are treating this as resolved.