Last updated: 
4 months 1 week 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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Blog Article

So you've designed your redundant architecture and ensured that your data is being replicated across it? All set? Not quite. Within your DNS configuration there are two timers that we frequently see misconfigured -  TTL values and the SOA expire value.

Frequently we see these left at default a default of one day (86400 seconds). Whilst these may suit many organisations it's worth taking a closer look to make sure that they match your expectation for your DNS services.

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