DNS

24 June 2014 at 1:52pm

When providing DNS nameserver services a degree of redundancy is needed. In most cases the DNS records for a particular domain will be hosted by at least two nameservers, but is that enough by itself? When building a resilient system the risks involved with the failure modes of the system need to be considered and weighed up against the associated costs and overheads. As a common example - does having both DNS servers on the same local network segment provide you with protection against network failure? Probably not.

2 June 2014 at 4:39pm

NCA action on GameOver Zeus and Cryptolocker

As you may now be aware, the FBI and NCA are coordinating 'global day of action' against the Zeus-P2p and Cryptolocker families of malware. Law enforcement and industry partners will be collaborating to interrupt infrastructure vital to the malware's operation and to raise public awareness of these threats.

5 December 2013 at 4:09pm

Simple preparations for DDoS attacks

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.

29 October 2013 at 11:06am

Reflected DDoS attacks

Following on from our messages and briefing at the start of the year, DDOS attacks are continuing to occur at a greater frequency than they have in previous years. We have been working to assist affected customers when they happen. Many of the attacks make use of unauthenticated UDP based services to reflect and amplify traffic against the chosen target. Open DNS resolvers (53/udp) and increasingly CHARGEN (19/udp) are the two most abused services. It's not unusual to see attacks in the order of 10Gb/s.

2013 - Nominet consultation on second level domain names

Andrew Cormack

Monday, September 23, 2013 - 08:43

DNS

Nominet

This is the response of Jisc Collections and Janet Ltd, trading as Janet, to Nominet’s consultation on registration of second level domain names. Janet is the registry for the .ac.uk subdomain and also operates .gov.uk on behalf of the Cabinet Office.

Domain Name System (DNS)

Iain Emsley

Thursday, July 5, 2012 - 08:03

support

manual

DNS

The Domain Name System (DNS) allows a computer presented with a textual name to convert or map it to the numeric IP address of another computer with which it needs to communicate, say to fetch a web page or deliver an e-mail. The process is called DNS resolution.

DNS Portal Help Page

Iain Emsley

Wednesday, July 4, 2012 - 10:47

DNS

View Domains Filter Here you can narrow down the list of domains on show, by filtering by the status of the domain, or search for a specific domain. Request Domain ISP Organisation Choose which ISP organisation or account this domain will be maintained by. Domain Prefix The domain name without the suffix (eg .ac.uk, or .gov.uk)

2011 - Nominet consultation on domain names used in connection with criminal activity

Andrew Cormack

Thursday, June 28, 2012 - 13:25

Cybercrime

DNS

Nominet

This response is structured around the questions in Nominet's consultation paper: 1. Should Nominet have an abuse policy and would creation of one be in line with its vision of making the internet a trusted space? [section1, and section 2(a)]