byOliverT09-06-201008:03 AM - edited 02-08-201105:14 PM
Over a series of blog submissions, I plan to look at the challenge of implementing security through a set of different lenses. The lens I will employ today is one of compute power – specifically the amount of compute power it takes to implement protection against a broad array of possible threats in a network device.
Given infinite compute capacity, one could take every flow of traffic encountered on the network and play it back (in a sandbox) against all versions of software which might end up on its receiving end. If one of the sandboxes sustains damage, we’d know that the flow is potentially dangerous (though it may involve no malicious intent and may not actually cause any damage on the particular system which is the flow’s recipient). Given that we must make do with only finite compute capacity, we will need to apply more brain and less brawn to this problem.
The security technologies which can prevent a flow from reaching a certain destination can be broadly categorized as follows (sequenced from coarsest and computationally cheapest to finest grained and computationally most expensive):
Network segmentation with some form of (physical or logical) admission control – the decision to place a host on a network segment (e.g. a VLAN) when it is connected to the network can be used to isolate the host from many types of potential harm.
Stateless firewall – most routers and switches can implement stateless firewall filters at line rate without breaking much of a sweat. A whole host of undesirable behaviors can be headed off with stateless firewall rules which prevent traffic which absolutely shouldn’t be on your network from being there.
Stateful firewall – stateful firewall can protect against more complicated protocol anomalies that have historically been exploited to compromise systems. In the past, TCP has been a favorite target in the protocol stack and stateful firewalls have grown to meet this challenge.
L5-L7 protocol anomaly detectors – stateful firewalls detect anomalies in layers 3 (IP) and 4 (UDP, TCP, etc.), while products such as Intrusion Prevention Systems (IPS) include (along with other capabilities) higher level protocol decoders (e.g. HTTP) which can detect anomalies and malformations of those protocols. Other examples in this class include XML firewalls, which can verify that XML documents are well-formed, are compliant with a specified XML schema and don’t do silly things like nest a thousand levels deep.
Signature-based pattern matching – examples include the signature-based portion of IPS systems which can detect a variety of attacks and XML firewalls which look for SQL injection exploits. These technologies become computationally expensive enough that much energy is expended trying to optimize them (the more context that is available, the more they can be optimized).
Behavioral analysis – establishing some sense of what “normal” looks like and looks for significant variations from this baseline. With fine granularity, it can be quite expensive to implement.
It’s not worth wondering which security technology you need – each is a tool in a tool chest and limiting your selection of tools puts you in the awkward situation not unlike trying to assemble a grill for your labor day picnic with only a hammer in hand.
Title: Senior Vice President and General Manager of the Branch Solutions Business Unit
Area of Responsibility: Driving Juniper business including strategy, revenue/profitability, products and execution for this segment of SLT's overall portfolio, specifically comprehensive solutions for the small to medium size locations of large, distributed enterprises.
Alex joined Juniper in February 2008 after more than five years at Extreme Networks, where he served as Chief Operating Officer from mid 2002 through 2006, and the last year as VP and GM of Extreme's high-end switching business and core engineering operations. During his tenure at Extreme Alex led programs which established essential product lifecycle and quality systems, completely refreshed the product portfolio, significantly improved product and service quality and margins, and streamlined the supply chain.
Prior to Extreme Alex served as Chief Operating Officer for LCG Wireless (acquired by ADC Telecommunications), SVP Business Operations for ReplayTV, and earlier spent eight years in various executive roles with Octel Communications (acquired by Lucent Technologies) as CIO, SVP Business Operations, and SVP and GM of Enterprise Messaging. Alex holds a bachelors and masters degree in electrical engineering from Washington University in St. Louis.
Bill is the Director of Federal Certifications and Policy at Juniper Networks. In this role, Bill focuses on several areas unique to the needs of Federal Government customers, including product certifications, IPv6, and security. Bill came to Juniper Networks in January 2008 after more than 20 years in the IT community working with commercial enterprise customers, service providers, and the US Federal Government.
Bill started his career as an engineering officer in the US Air Force after graduating with a Bachelor of Aerospace Engineering from the Georgia Institute of Technology. Bill has an MBA from the Wharton School at the University of Pennsylvania.
Brad Minnis, CPP is the Senior Director of Corporate Environmental, Health, Safety & Security for Juniper Networks, Inc. based in Sunnyvale, CA, where he is responsible for strategic design, implementation and management of the company’s security, safety, environment, crisis management and business continuity functions. He also leads the company’s efforts in corporate citizenship and sustainability, and manages the Corporation’s government-related security programs.
Mr. Minnis has over 30 years experience in the Silicon Valley and has managed EHSS operations for a number of high tech companies, including Juniper Networks, 3Com Corporation, and National Semiconductor Corporation.
Mr. Minnis’ specialties include security management, supply chain and product integrity, anti-counterfeit, occupational health and safety and crisis management. In his role as Cyber Incident Response Team Leader for Juniper, Mr. Minnis has managed numerous high impact cyber-related incidents and cross-functional responses.
Mr. Minnis served for ten years in the United States Navy and has served in leadership positions the International Security Management Association (ISMA) and ASIS International, serving as Chairman of the San Francisco Chapter in 2003. He has also co-written several publications on software integrity assurance and supply chain security with organizations such as SAFECode.
Mr. Minnis is certified as a Protection Professional by the Professional Certification Board of ASIS International and attended the University of Connecticut, where he received two certificates in Environmental, Health and Safety
François Prowse is a Senior Systems Engineer for Juniper Networks, based in Brisbane Australia. Francois joined Juniper in 2006 as part of the New Zealand SE team, subsequently relocating to Australia. Prior to Juniper, Francois worked for four years at Alcatel in both operational and architectural roles, being jointly responsible for the construction of New Zealands' largest MPLS core network. Prior to Alcatel, Francois worked at UUnet, focusing on core network expansion in Europe. In all previous roles JUNOS has been the driving factor behind day to day operations, providing him with over 8 years of operational experience. Francois is a Juniper Networks Certified Internet Expert (JNCIE #144) which he obtained prior to joining Juniper Networks.
Greg Sidebottom is a Senior Engineering Manager in the Identity and Policy Management business unit at Juniper Networks. Greg has spent the last decade plus conceptualizing, architecting, designing, and leading the implementation of Juniper's SDX and SRC families of policy based service management applications. Previous to this, Greg held positions in the software and networking industries at Siemens, Cognos, Nortel, GTE labs subsidiary MPR Teltech, and the Alberta Research Council. Greg is an author of eight invention disclosures resulting in two patents issued and three pending. Greg holds a B.Sc. in Computer Science for the University of Calgary and an M.Sc. and Ph.D. in Computing Science from Simon Fraser University.
Senior Product Line Manager – CTP Products Juniper Networks.
Jim Kelly is the senior product line manager for the CTP products where he is responsible for the CTP product direction, marketing and circuit emulation applications within Juniper Networks. Mr. Kelly has more than 28 years of experience in the networking industry in technical roles, sales, marketing, and product management positions. He started his career in the United States Air Force. He has worked for Wang, Digital Telecom Systems, American Airlines, Network Equipment Technologies, Carrier Access, and Nortel Networks. He started Juniper Networks federal DoD sales in July 2000 and joined Juniper Networks again in October 2005 through the acquisition of Acorn Packet Solutions where he was the director of sales and marketing.
Justin Ryburn is a Senior Systems Engineer at Juniper Networks. He holds an MBA and a MS in IT Management from Webster University as well as numerous industry certifications. Justin contributed content for Cyber Forensics (Auerbach Publishing, 2007) and spoke on BGP Flowspec at NANOG63. Prior to joining Juniper, Justin held various operations, engineering, and sales engineering positions over his 15-year career with companies such Savvis, Nortel, XO, and Charter.
I am currently a Sr. Product Marketing Manager specializing in Juniper's Security Portfolio in the Service Provider industry. I am an experienced senior technical leader, technical marketing engineer, solutions architect, and product marketing manager with over 20 years of Internet and Enterprise industry experience developing solutions from scratch often in relation with business units and technology groups, my projects ranged from product, solution, and technology development to corporate technology strategies. I have strong analytical skills and I am able to crunch and articulate complex technology to a variety of audience knowledge levels. I possess a deep hands-on technology and business knowledge of Service Provider and Enterprise architectures with deployment hands-on skills. I also bring a unique perspective of open source philosophy, including but not limited to open innovation, software development methodologies, open source monetization and business models, and licensing and compliance in software integration. I am a strategic leader with proved ability to empower a team to improve their product, themselves, their team, and our company’s market position.
30 Years in Book Publishing, 20 years in Technical Book Publishing, including Apple Developer Press, Adobe Press, Nokia Developer Books, Palm Books, and since 2001, almost 10 years as consulting editor/editor in chief for Juniper Networks Book. Joined the company and started the Day One book line and in 2011, the new This Week book line.
Rajoo Nagar is a senior manager in product marketing at Juniper Networks. She is responsible for product marketing for Juniper's security solutions. Rajoo is a published author, her book “Telecom Service Rollouts” was published by McGraw Hill Professional.
I'm a Product Line Manager in the Security Business Unit working on all things intrusion prevention-related. I've been in the security field since 1994 working on diverse projects such as developing HP's public-key infrastructure (PKI), building the first protocol anomaly-based IDS at Recourse Technologies (acquired by Symantec), integrating vulnerability management and IDS at VM vendor nCircle and managing IPS products at Cisco and Juniper.
Jonathan Looney is a Senior Staff Courseware Developer at Juniper Networks. Before joining Juniper, he performed network engineering for a large enterprise, a regional ISP, and an application service provider (ASP). The holder of several industry certifications, he enjoys the freedom his job at Juniper gives him to both continually learn and also to share his knowledge with others through a wide range of media.
Scott is the Director of Product Marketing for Mobile Security at Juniper Networks. In his 20+ years in high tech, Scott has worked on Mobile and Endpoint Security, Network Security, IPS, Managed Services, Network Infrastructure, Co-location, Microprocessor Architecture, Unix Servers and Network Adapters. He has held leadership roles at Check Point, McAfee, Symantec, Exodus Communications, Cable & Wireless, Savvis, and HP.
Sherry Ryan is IT Vice President and CISO of Juniper Networks. Previously, Sherry held similar positions at Blue Shield of California, Hewlett-Packard, Safeway and Levi Strauss where she established and led their information security programs. Sherry holds the Certified Information Security Manager (CISM) certification from ISACA and the Certified Information Systems Security Professional (CISSP) certification from ISC2. She is a member of the High Tech Crime Investigation Association (HTCIA) and the Information Systems Security Association (ISSA).
Sherry has a bachelor's degree in Business Administration from the University of Redlands, and earned her MBA from the College of Notre Dame.