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Network Security Management

Network Security Management. at Jesus College, Oxford. John Ireland, IT Manager <john.ireland@jesus.ox.ac.uk>. Fitting Into Oxford. Conference. Council. Colleges. Committees. Academic Divisions. Administrative Departments. Network Topology. MIS. Physics. OUCS. Jesus Coll.

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Network Security Management

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  1. Network Security Management at Jesus College, Oxford John Ireland, IT Manager <john.ireland@jesus.ox.ac.uk>

  2. Fitting Into Oxford Conference Council Colleges Committees AcademicDivisions AdministrativeDepartments

  3. Network Topology MIS Physics OUCS Jesus Coll.

  4. What Do We See?

  5. Avoiding and Detecting Trouble • Education of users • Induction talks for all new starts • Reminders by weekly email • Clear statement of usage policy (AUP) • Clear investigatory procedure, including penalties that may be imposed • Technology • Registration for network access: web scripts + dhcp • Firewalls (policy?): Linux iptables • Anti-virus software + updates Sophos CID • Windows Update links on web site • Traffic monitoring / network scanning iptables, NetBrute • Secure, well designed systems Switches, Linux, iptables,… • Physical network segmentation

  6. Approach for Internal Abuse • Penalties should mean that it is on the student’s record • Discussion is better than penalisation in terms of actually preventing further abuse: seeing a human being (even if it’s the network manager) reminds them that this is not a ‘pay-per view’ service • Get them on our side – one night of drunken stupidity doesn’t deserve revenge (or counter-revenge) • Recruit them as security evangelists: tell others

  7. A Final Thought What would you do if you track down an abuse and find that the miscreant is…. YOUR BOSS!

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