network security. announcements review assignment - assessment 3 (due tuesday, before class)...
TRANSCRIPT
Network Security
Announcements• Review Assignment - Assessment 3 (due Tuesday, before class)
• Assessment 3 – Next Thursday
Reminders:• Network Design Project
• No more than 2 per group• Proposals due on the day of presentation• Sign-ups shortly
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Basics of Network Security• Anti-virus / Anti-Spyware
• Access Controls
• Firewall
• Intrusion Protection/Detection Systems• Identify fast spreading threats
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Access Controls
• The four processes of access control
Firewalls
Example: Packet Filtering Firewalls
Intrusion Detection and Prevention Systems (cont’d.)
Basic Network FactsPrimary Core Located in Technology Support
Center (TSC)Secondary Core located in CIS Disaster Recovery
FacilityComprised of Cisco Systems 6500 series switchesDistribution layer, Cisco Catalyst 4500 and 3750
seriesTotal network is 311 switches1600+ Controller based wireless Access PointsAll devices monitored 24/7 by Netcom staff.Dual connections to the internet via NCREN.Primary pipe is 10gig and backup is 1gig via
NCREN BTOP
Network SecurityCisco Firewall Service Module
UNCW uses Cisco Systems ASA5585 devices Primary and Secondary for Redundancy ASA provides up to 20 individual contexts Allows any VLAN on the switch to be passed through to
the device to operate as a firewall port and integrates firewall security inside the network infrastructure.
ASA evolved from Cisco PIX technology and uses the same time-tested Cisco PIX Operating System, a secure, real-time operating system.
Defines the security parameter and enables the enforcement of security policies through authentication, access control lists, and protocol inspection.
Network SecurityIntrusion Prevention Systems
UNCW’s Intrusion Prevention Systems – ASA5585 IPS We currently use redundant pairs for continuity. The ASA network intrusion prevention and detection
system (IDS/IPS) reputational based, combining the benefits of signature, protocol and anomaly-based inspection.
Capable of performing real-time traffic analysis and packet logging on IP networks.
Can be used to detect a variety of attacks and probes, such as buffer overflows, stealth port scans, CGI attacks, SMB probes, OS fingerprinting attempts.
Has a real-time alerting capability for Network Communications Staff
Rules are pushed to all IPS systems nightly.
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Logical Network Core Traffic Flow
Total Network Layout
Network Authentication
Cisco Identity Services Engine (ISE) is a security policy management and control platform. It automates and simplifies access control and security compliance for wired, wireless, and VPN connectivity. Cisco ISE is primarily used to provide secure access and guest access, support BYOD initiatives.
ISE authenticates against Active Directory, meaning credentials are required to access UNCW’s network.
ISE is deployed in all building and wireless networks as of fall 2014.
STUXNET
STUXNET – How it Worked
Stuxnet
What was it?
How did it spread and how far?
What are the implications?
Stuxnet
Precursors:
What should we do now?
Target – What Happened?
Target – How did it happen?
Target – How could it have been stopped?
Target – Modern Day Hacking
Security Discussion• TJ Maxx• RSA• Epsilon• Gawker• Wikileaks• HB Gary
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11.1 Corporate Security: TJ Maxx
• War-Driving to seek vulnerabilities in wireless networks
• Breaches took place all the way back to 2005
• Albert Gonzalez was mastermind• 2005 -2007 sold as many as 170 million ATM/Credit Card
#s• Typically used SQL injection to launch packet sniffing• Now serving 20 years in a federal prison
11.1 Corporate Security: RSA
• Security companies are often the target of many hackers.
• Another case of phishing emails to get into the company• Excel Spreadsheet had a Zero-day exploit• Exploit took advantage of Adobe Flash allowing
them to install a remote administration tool • Used remote admin tool to get deeper
information
11.1 Corporate Security: Epsilon
• Occurred earlier this year
• Primary purpose for stealing
• Phishing – maquerading as a trustworthy entity to gain access to information• Form of Social Engineering• Carried out by email spoofing
11.1 Passwords: Gawker Hack
• After hack, the Wall Street Journal Examine a number of passwords (188,279) and here are some of the most commonly found:• password• qwerty• letmein• trustno1• passw0rd
Can anyone guess the most commonly used?
11.1 Corporate Security: Higher Ed Threats
• Mobile Devices
• Social Media Viruses (hilarious video attack through FB)
• Virtualization
• Embedded devices (number of devices connected to the network)
• Consumerization of IT (personal devices for organizational use)
11.1 Corporate Security: Wikileaks
• Exposed major security flaws in the US government • Not standardized across agencies• No user restrictions on copying data• Minimal monitoring of users accessing
sensitive data
• Recently, new measures are in place to alleviate problems.
• Bradley Manning trial begins December 16th
11.1 Corporate Security: HB Gary
• Found a flaw in content management system• Used an SQL Injection to gain access
• Numerous issues with the system allowed hackers to obtain two passwords: the CEO (Aaron Barr) and COO (Ted Vera)
• Key takeaway: passwords!• Don’t use short, easily deciphered • Use different passwords for different accounts