Campus Firewalling Dearbhla O’Reilly Network Manager Dublin Institute of Technology.

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Presentation transcript:

Campus Firewalling Dearbhla O’Reilly Network Manager Dublin Institute of Technology

Overview n Context of Firewall for DIT n Firewall Experiences n Mobile Network with Firewall n Where we are now ? n Where we are now ?

Background to DIT Firewall n Presentation in 2000 to IT Group on Firewall role in - Security - Bandwidth - Content (web)

Issues n Security - Educational institutions are prime targets - CPU power, bandwidth, disk space. Attacks - web page, spam, port scans, logon attempts n Bandwidth - Competition for traffic prioritisation and network utilisation n Content - Viewing inappropriate web content, serving content from DIT

Firewall Solutions n Security - Assist in protecting users, information, operation and reputation n Bandwidth - Allow core services run efficiently n Content – Designated Web Servers

Perimeter Firewall D.I.T.HEAnet

Implementation n Deny all and allow approved services n Standard set of services - desktop n Procedure - Internet Service Server Registration Form based on now Archived JISC Project – Use of Firewalls in Academic Environment. Archived

Firewall Use & Maintenance n Form - List of Ports to/from and Why ? n Server Administrator – Security, Patching, Responsibility. n Head of School/Section – Approves and complies with DIT & HEAnet Policies

Registration Conditions n n Any service may be blocked without notice if network & systems staff suspect a security breach n n All services are provided for the server specified and should not operate as a proxy n n All approvals are subject to review by ISSC n n Firewall rule-sets for servers/services will be audited on a regular basis

Experiences n Paper Forms - by User n Firewall Rules are – by Service n ~200 Firewall Rules n Requirement for Rule Management Software n Firewall Rule Maintenance

Maintenance Experience n Logs - mainly used for real-time support n Firewall Maintenance - Backup/Recovery, Log Rotation, Patches, Upgrades etc.

Mobile Network Requirements n Wired & Wireless Connectivity for Student Laptops n Separate Projects starting to address Identity for Staff & Students n Service needed to be provided

D.I.T.HEAnet Mobile Perimeter Firewall

Mobile Network & Firewall n Traffic from mobile network in all sites passes through Bluesocket authentication gateway n Traffic from DIT mobile network into DIT fixed network is filtered through the same ruleset as applies to all external traffic n Traffic from DIT mobile network for external destinations is filtered through the same ruleset as standard outgoing DIT traffic

Mobile Network Access with Timed Firewall Rule

MRTG - Mobile Network Access

Limitations/New Requirements n Gigabit Ethernet n IPv6 Support n Performance n Reporting/Logging

Procurement Process n Request for Quotes n Based on Requirements n Award Criteria – Quality and Functional Characteristics, Technology, Cost, Supplier – Support, Maintenance, Experience.

Requirements n Functionality & Use of existing system n Technology Updates - IDS - IPS - Deep-packet inspection n Service Availability Options

Thank You & Questions?