Last updated: 
1 month 3 weeks ago
Blog Manager

We are the Computer Security and Incident Response Team (CSIRT) for the Janet network. Part of Jisc's Security Operations Centre, our mission is to safeguard the current and future network security of Janet (steering the security policies for all Janet connections) and of our customers, creating a secure environment to conduct your online activities. Our primary function is monitor and resolve any security incidents that occur on the Janet network, with specialists tracking a range of platforms, including Unix, Linux and Windows.

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We have responded to the announcement of the OpenSSL vulnerability today, 8th April 2014.

Technical advice (detailed below) has been issued to colleagues across the sector to assist them in responding to this vulnerability.

In addition, replacement certificates, for those organisations affected by this vulnerability, will be issued at no cost by the Janet Certificate Service. If your organisation is affected by the OpenSSL vulnerability and is taking steps to address this, and requiring a replacement certificate, then please visit the following url for further information.

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We continue to monitor the effect of the filtering of large ntp packets (> 128 bytes) at the Janet borders. Where people have had concerns we've been working with them to make sure that their work is impacted as little as possible by this measure.

The filtering has had a large reduction on the impact to Janet infrastructure but the current filtering limits still allow enough traffic through the Janet border to cause disruption for customers with 100Mb/s, or busy 1Gb/s, connections.

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The increasing frequency, number and size of ntp based DDoS attacks against Janet connected organisations has at times briefly degraded connectivity to sections of the network. Whilst we are able to react to these attacks as and when they occur, the impact upon our customers can be significant. This situation is far from unique to Janet - ISPs globally are struggling with this issue.

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You can call CSIRT for help
 
If you suspect that your institution is suffering from a DDoS attack you can call on Janet CSIRT for assistance. We can help you understand and analyse the traffic, and in most cases can work with our network operations centre and transit partners to filter traffic. Where possible we work with other network providers to eliminate the sources of the attack.