DNS Firewall Overview Speaker Name. Date

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1 DNS Firewall Overview Speaker Name 1 1 Date Reserved.

2 Agenda DNS Security Challenges DNS Firewall Solution Customers Call to Action 2 2 Reserved.

3 APTs: The New Threat Landscape Nation-state or organized-crime sponsored targeted cybercrime directed at governments or enterprises Malicious traffic visible on 100% of corporate networks1 Average material loss per breach incident - $7.6M, intangible (brand) loss much higher2 APTs use DNS to connect devices to malicious destinations on Internet Source: 1. Cisco 2014 Annual Security Report, 2. The Ponemon Institute 2014 Global Report on the Cost of Cyber Crime 3 3 Reserved.

4 Malware Examples CryptoLocker Ransomware and Gameover Zeus CryptoLocker Targets Windows-based computers in form of attachment Upon infection, encrypts files on local hard drive and mapped network drives If ransom isn t paid, encryption key deleted and data irretrievable Gameover Zeus (GOZ) 500,000 1M infections globally and100s of millions of dollars stolen Uses P2P communication to control infected devices or botnet Takes control of private online transactions and diverts funds to criminal accounts 4 4 Reserved.

5 Common Security Solutions Not DNS Focused 5 5 Approach Pros Cons Next generation firewall Focuses on perimeter protection from network and application threats and usually allows DNS traffic Cannot easily mitigate Fast flux and DGA attacks May have to rely on endpoint software (agents) for protection against malware callbacks to command and control server Intrusion detection/ Intrusion prevention Supplements firewall with anomaly detection and heuristics to detect and block malware Because malware uses DNS to resolve IP address of domains, bad networks use rapid fast-flux change to quickly create unique combinations of IP addresses and new domains; combinations won t be identified by IDS/IPS as bad traffic & pass through misclassified. Cannot detect attacks disguised within encrypted communications, leaving a hole in threat prevention Web filter or proxy/ Secure web gateway Filters unwanted software and malware from internal user-initiated web/internet traffic Limited to detecting only Web (HTTP/URL) traffic; malware using Internet-based applications such as FTP, VoIP, RPC, SIP, SSH, and Telnet pass through unfettered Deployment can be cumbersome; proxies are hard to implement even for HTTP traffic inspection only use case Does not address Fast flux attacks Blacklists typically not comprehensive, so may not be effective Reserved.

6 DNS Firewall Malicious Domains threat update device IPs, Domains, etc.. of Bad Servers INTERNET INTRANET Malware/APT spreads within network; calls home Malware/APT Blocked communication attempt sent to Syslog with DNS Firewall An infected device brought into the office. Malware spreads to other devices on network. Malware makes a DNS query to find home (botnet / C&C). DNS Firewall looks at the DNS response and takes admin-defined action (disallows communication to malware site or redirects traffic to a landing page or walled garden site). Reserved. 3 FireEye detects zero-day APTs Pinpoint. Reporting lists DNS Firewall action as well as the: Device IP address Device MAC address Device type (DHCP fingerprint) Device host name Device lease history 4 5 An update will occur every 2 hours (or more often for significant threat). Additional threat intelligence from sources outside can also be used by DNS Firewall (e.g. FireEye)

7 Types of Attacks DNS Firewall Protects Against Fast flux Rapid changing of domains and IP addresses by malicious domains to obfuscate ID and location DGA Randomly generating domains that connect to malicious networks or botnets Geo-based Geographical locations with many malicious domains or that have economic sanctions by governance 7 7 Reserved.

8 Actionable Reporting and Logging CISO/Executive report Clients trying to communicate with malicious locations most often Top three domains clients are attempting to reach Top APT/malware threats by volume ID malicious activity By client, destination, and threat context 8 8 Reserved.

9 Geisinger Health System Problem Obtain visibility, control, and security for distributed network Replace VitalQIP with more future-proof, cost-effective solution Support health services for 2M+ people Solution DDI and DNS Firewall with Reporting DNS security for medical devices Visibility into infected devices Scalability 9 9 Reserved.

10 A Global US Defense Agency Problem Protect network from millions of daily connections to malicious domains Incorporate feeds from other agencies in its own blacklist Know which devices are infected Solution DNS Firewall Prevents communications with malicious domains Adds accurate, current malware data to its blacklists Supports threat intelligence from non- sources Helps pinpoint infected devices Reserved.

11 A Private University Problem No visibility with other Security platforms into what is traversing via DNS DNS FW Assessment found 4K+ queries going out to known malicious sites Solution DNS Firewall with FireEye Integration License FireEye enables visibility into zero-day malware activity at the DNS level Aligns with defense-in-depth strategy protection against DNS-based APTs Reserved.

12 Try DNS Firewall/Virtual Evaluation Use DNS to find APTs and malware lurking in your network 60-day trial Options: SPAN port or standalone See malware/apt activity with reports No hardware (100% virtual) Non-disruptive to production network Reserved.

13 Send Us Your PCAP Files analyzes and provides insights on malicious activity in seconds Report on findings to take back to management Reserved.

14 Reserved.

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