free780 Posted December 8, 2015 Posted December 8, 2015 Depends if your PC/local DNS server cached the a record. Before port 53 got blocked.
MrPstv Posted December 8, 2015 Posted December 8, 2015 Info from Link2ict Following investigation it would appear that the intermittent internet issue is not isolated to Birmingham but is being experienced nationally by all JaNet (JISC) network users. We understand the JaNet network is currently under a sophisticated distributed denial of service attack (DDOS). We will provide further updates as information becomes available.
HPlum78 Posted December 8, 2015 Posted December 8, 2015 https://netsight.ja.net/Public/NetworkSummary.aspx?AspxAutoDetectCookieSupport=1
MrPstv Posted December 8, 2015 Posted December 8, 2015 https://netsight.ja.net/Public/NetworkSummary.aspx?AspxAutoDetectCookieSupport=1 Love the link, unreachable
Zoom7000 Posted December 8, 2015 Posted December 8, 2015 Problems affecting several schools in the LGfL too. Most websites are working, but some are on/off intermittently.
CHR1S Posted December 8, 2015 Posted December 8, 2015 What I cant get is why all internet traffic is routed via JANet, my VOIP phones are unaffected as is my un-firewalled Google services. Until today I had never heard of JANet and L2ICT/BGFL mentioned in the same sentence. Ignorance was bliss, what exactly is JANet and its role for schools and why should our web stuff need to go via it?
SovietRussia Posted December 8, 2015 Posted December 8, 2015 What I cant get is why all internet traffic is routed via JANet, my VOIP phones are unaffected as is my un-firewalled Google services. Until today I had never heard of JANet and L2ICT/BGFL mentioned in the same sentence. Ignorance was bliss, what exactly is JANet and its role for schools and why should our web stuff need to go via it? https://en.wikipedia.org/wiki/JANET From reading that I assume for collaboration purposes, they also control all .ac.uk and .gov.uk domains 1
HPlum78 Posted December 8, 2015 Posted December 8, 2015 Its the research and educational network in short and yeah the old MANS (now gone and merged into JA) and local grids that schools use are connected to it. 1
CHR1S Posted December 8, 2015 Posted December 8, 2015 So there is "theoretically" a single point of failure for almost every educational establishment in the country? 1
Asgard Posted December 8, 2015 Posted December 8, 2015 yep the Janet @jiscmi is showing; " #TT169600 - Still ongoing. It is affecting most services. Due to the nature of the outage we cannot give a ETA on restoration. "
HPlum78 Posted December 8, 2015 Posted December 8, 2015 (edited) Yeah if you look at it like that but no different to being connected to any other ISP educational or not. Edited December 8, 2015 by HPlum78 1
Trojan Posted December 8, 2015 Posted December 8, 2015 Perfect storm here. My core switch has died. The VMware environment has taken a dive and the bgfl is down !
pete Posted December 8, 2015 Posted December 8, 2015 Just a note that we're seeing flaky Internet in Lincolnshire too - mostly gateway timeouts and problems accessing sites hosted outside the UK.
Chuckster Posted December 8, 2015 Posted December 8, 2015 I've reached the limit as to how many articles I can view this week; however, The Telegraph have a piece about the downtime: Universities across the country lose internet connections following cyber attack - Telegraph 1
AMLinington Posted December 8, 2015 Posted December 8, 2015 Not sure if it's relevant but JANet has been subject to sustained and repeated DDoS attacks in the last few days - it's playing havoc with edu networks.
HPlum78 Posted December 9, 2015 Posted December 9, 2015 Attacks are also spreading to GÉANT now. So not just the UK! 1
Michael Posted December 9, 2015 Author Posted December 9, 2015 So there is "theoretically" a single point of failure for almost every educational establishment in the country? Yes and no - consider JANET a sort of Educational ISP. It's not really that different if someone targeted one of the major ISPs in a similar manner. All traffic still travels through the core of the ISP. I guess the only advantage to not using JANET is that if schools were all broken up and using different ISPs, only a fraction would have been taken down and not a high percentage. 1
Wave9_Lee Posted December 9, 2015 Posted December 9, 2015 When we were involved in the design of some of the large regional networks, we always proposed a dual internet service, one from JANET, one from a commercial provider. This clearly increased costs, which provided a level of resilience, but also some commercial terms around the service - i.e. commercial providers/ISP are willing to provide an SLA with service commitments and Credits when service falls below certain thresholds. JANET wouldn't provide an SLA for their free service (it's free, why would they). Obviously getting some money back, doesn't really help when you have no Internet, but it does create the right behaviours in service design and fix times. I'm sure that every effort is being made to resolve these issues, but it does highlight the benefit of supplier diversity for mission critical services.
MrPstv Posted December 10, 2015 Posted December 10, 2015 Attack floods Internet root servers with 5 million queries a second | Ars Technica UK 1
network41 Posted December 14, 2015 Posted December 14, 2015 Anybody having problems with JANET today ?
Michael Posted December 14, 2015 Author Posted December 14, 2015 Everything seems to be behaving normally today. 1
Michael Posted December 14, 2015 Author Posted December 14, 2015 Thanks Just me then Mmm What kind of problems are you seeing?
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