Securing Business-Critical Network and Application Infrastructure NET&COM Feb 2006 Gopala Tumuluri Foundry Networks

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1 Securing BusinessCritical Network and Application Infrastructure NET&COM Feb 2006 Gopala Tumuluri Foundry Networks

2 Agenda Security Market and Solutions Overview New NetworkBased Security Architecture Key Features for NetworkWide Security Summary 2

3 Security Solutions in the Market Traditional Firewalls Stateful Inspection Firewalls (Layer 2 through 4) Maintain State of Every Flow (L4) Traffic Only on PreEstablished Flows Some DoS, NAT, IPSEC VPN Proxy Firewalls (Layer 2 through 7) Full Termination with Proxy Terminate TCP and ReEstablish Protocol Aware Proxy Layer (HTTP, FTP Etc.) Slower because of Full Termination Firewall Inadequacies Need to Augment and Offload Very Poor DoS, Application Rate Limiting, Layer 7 Intelligence Performance Challenged Especially for NAT and DoS FWLB for Scalability and HA Still a Key Need 3

4 Security Solutions in the Market Intrusion Prevention and Detection IDS (Intrusion Detection Systems) Passive Devices in the Network Observing Traffic Observe Behavior and Alert or Act on Anomalies Downsides: False Positives, Slow Responsiveness, Reliance on Magic IPS (Intrusion Prevention Systems) Inline Devices Blocking Threats, Vulnerability and Exploits Signature Based Deep Packet Scan Engines Deterministic Enforcement against Known Signatures Weaknesses and Inadequacies Need for Integration Overpriced Point Products Solving ONE Security Problem Not Ideal for Inline Deployment PC, No Networking, No Robust L24 Defenses, L7 Limited to Signatures IPS Needs to be a Feature on a *Total Solution* Inline Security Device IDS Must Work Together with Switches and Traffic Monitoring (sflow) 4

5 Security Solutions in the Market and Message SPAM Full Content SPAM Mitigation and Prevention Inspect for Keywords, Signatures, Attachments Using Complex Rules Block Bad and Mark Suspected Mail Score System (1 to 100) Administrator Set Threshold for Blocking IP Reputation List Based SPAM Mitigation Solutions Lists of *Known BAD* IP Addresses and Prefixes (Assigned a Score) Many Sources for Lists Gathering Reputation Data Worldwide Lists Customizable on Score (Ex: IPs Ranked 70 or Above) SPAM Defense in Depth Need for Network Solutions Exclusive Content Solutions are Inefficient, Costly, and Inadequate Exclusive IP Reputation is Ineffective and Inadequate Using Defense in Depth for Best of Both Approaches Apply IP Reputation in Network (Real Time Updated) Apply ContentBased Solutions in Server Farm 5

6 Security Solutions in the Market Web and Application Firewalls Outbound URL Filtering and Web Security Prevent Enterprise Users from Accessing BAD Websites Compliance, Etiquette, Corporate Policy, Productivity Database of Known Bad URLs (Scored) and Applied Periodically Updated with New URLs Application Firewall for Web Applications (Data Center) Goal is to Prevent Hacking and Abuse of Website (Scripting, Malicious Code, SQL Injection, Forceful Browsing, Cookie Tampering, Cloaking) Emerging Area Consolidating into Application Switch/Delivery Platform Web Filtering Need to Integrate with Inline Security Inline Security Device Leverages Offline Database to Enforce Policies Better Performance, Scalability and Security Beyond URL Enforcement Opportunity to Offload Firewalls from this Function Application Firewall on Application Switching and Delivery Class Products Data Center 6

7 Security Solutions in the Market Edge and Desktop Security Network Admission Control Enforce Policies on Who can Gain Access to the Network Enforce Policies Regarding Endpoint Security Updates and OS Authenticate Users Before They Get into the Network AntiVirus Solutions and Appliances Primarily *OnDesktop* Solutions that Prevent Viruses NewGeneration Appliances Emerging from Leading Vendors to Offload Some AntiVirus Function into the Network Network Access Control More fine Grained Control of Network and Service Access Who, When, How, From Where and Why? Web Authentication and Access 7

8 Security Market Needs and Trends Key Trends to Capitalize for NetworkWide Security Network Perimeter as we knew it is Disappearing Mobility, Convergence, Remote Access, Growing Internal Threats Need for Security Everywhere in the Network Well Established and Agreed Role of Network to Deliver Security Organizations are Gravitating Towards NetworkBased Security Solutions Protection for Infrastructure, Services, Critical Resources Moving Beyond the Firewall Without Giving Up on Firewalls Enterprises Endorse the Need for Solutions that Augment Firewalls Firewall Market is STRONG, but Layer 7 Security is Growing Rapidly Emerging Vision/Trend of NetworkWide Security is Catching On Network Integration is Seen as Inevitable and Required Solutions that Promote Incremental Steps are Needed Growing Attacks and Threats in Content and Service Provider Infrastructure These Customers Can t Rely on Firewalls 8

9 Agenda Security Market and Solutions Overview New NetworkBased Security Architecture Key Features for NetworkWide Security Summary 9

10 Security Traffic Managers and Secure LAN Switches are Key Building Blocks Secure LAN Switches Security Traffic Managers Direct Desktop Protection Desktops Server Farm Protection Web & Application Servers WAN WAN Traditional Firewalls Host Protection (Desktop and Servers) L2 Devices with Premium Security Features in Centralized Mgmt. Module Protection for Desktops and Servers from Network Attacks, and Vice Versa Initial Applications for HighValue User Desktops and Assets Network Protection (Internal and Perimeter) High Performance Security Between Network Segments Protection Against internal and External Threats, Including Web and SPAM Firewall Clustering, High Availability, Augmentation and Offload 10

11 Secure Network Architecture with Two New Product Categories Wire Speed LAN Switching Security L2/L4 DoS Attack Prevention Port, CPU, VLAN, & Rogue Protection Anomaly Based IPS External Collector, Analyzer External ClosedLoop Interface sflow based Anomaly IPS Solution ZeroDay Solution Interface to Network Mgmt. for Remediation Network Manager Web & Application Servers Internet Internet sflow From Switches Edge Port Remediation Web & Application Servers Security Traffic Manager (Perimeter Security) Secure LAN Switch (Server Farm Protection) Security Traffic Manager (InLine Inside LAN Protection) Radius NAC Server Secure LAN Switch (Direct Desktop Protection) sflow Security Traffic Mgr. and LAN Switch Signature based IPS and More Edge, Aggregation, and Perimeter Network Admission Control Agents on the Desktops 11 Network Admission Control Agents on the Desktops Application Security and Protection Web and URL Security Networkbased SPAM, DNS Jan and 2006 VoIP Foundry Security Networks, Inc.

12 Augment with sflow (RFC3176) NetworkWide WireSpeed Visibility Statistical Sampling Delivers Visibility to All Traffic Flows Throughout the Network Layer 2 through 7 visibility and analysis Scales with Network Size and Speeds with Zero Performance Impact No other Technology can Scale to GbE and 10 GbE rates Embedded implementations available today Free! Sampled Packet sflow Datagram Layer 27 Information Packet Header Analysis Src/Dst MAC addresses Src/Dst VLAN (802.1q) and 802.1p Src/Dst IPv4 addresses, including TOS/DSCP, TCP, TCP flags, UDP, and ICMP information Src/Dst IPv6 addresses and other information Src/Dst IPX addresses and other information Src/Dst AppleTalk addresses and other information MPLS information Sampling process parameters (rate, pool) Physical input/output ports Src/Dst prefix bits and next hop subnet, Source AS and source peer AS Destination AS path Communities and local preference 802.1X user name or RADIUS/TACACS user ID Interface Statistics (SNMP) The captured packet itself Collection, Analysis and Archival sflow Collector 12

13 Security OS Total Solution Must Combines Key Features and Applications WireSpeed Network Protection DNS Proxy and Security Application Rate Limiting DoS and DDoS Protection Security OS Features Intrusion Protection Deep/Bulk Packet Inspection SPAM Mitigation VoIP Security High Performance IP NAT Firewall Clustering and HA URL Filtering Web Security High Availability with Hitless Failover 13

14 Security Traffic Manager Applications Perimeter Security Front End and Traffic Manager Firewall Scalability and Performance Bottlenecks Firewalls Not for L7 and Application Security Security Traffic Manager Augments and Offloads Firewall Protects Firewall Investment and Extend Firewall Life Internal LAN Security Traffic Management at Distribution Layers Network Vulnerable to Threats from Within Internal Abuse a Key Challenge Security Traffic Manager Provides PerimeterLike Protection inside LAN 14

15 Secure LAN Switches Application Secure LAN Switches are Layer 2/3 LAN Switch with Premium ValueAdded Security Features High Density Desktop and Server Connectivity Small Price Premium over Traditional LAN Switch Port Cost Security Against DOS, Anomaly, Intrusion and Others High Value Desktop Protection Secures Desktops of High Value Users from Network Originated Attacks 10/100 and Gigabit Copper Connectivity for Desktop Machines Securing Critical Servers and Associated Applications Server Aggregation LAN Switch with Premium Security Protects Servers and Applications from Network Originated Attacks Prevents Abuse of Resources by Controlling Access Position of Traditional and Secure LAN Switches Traditional Layer 2/3 LAN Switching for Connectivity and WireSpeed Secure LAN Switching for ValueAdded Security to Desktop 15

16 Vision for Secure LAN Switches Wire Speed Security Everywhere Layer 3 was CPU Based Until Foundry Networks Revolutionized WireSpeed Layer 3 Technologies in 1997 All Layer 3 Traffic Processed by Centralized CPU Slow Performance Foundry Revolutionized the Industry by Delivering L3 in WireSpeed Today, Secure LAN Switches (Industry s New Category) are CPU Based Central Security Management Module (With Performance Scalability) NonTrusted Flows CPU Processed Not WireSpeed on All Ports Next Generation will Incorporate WireSpeed on Uplink Ports In the Future, Advanced (and Economical) Technologies will Help Deliver Security on Every WireSpeed Security Must be Everywhere, and it Must Be Available for a Small Premium over Traditional Layer 2/3 LAN Switches and without Significant Performance Sacrifice 16

17 Security Feature and Capability Differentiation across Solutions Network Security DoS and Layer 4 Layer 4 Rate Limiting Intrusion and Layer 47 Signature Blocking VoIP Security URL and Web Filtering SPAM Defense High Performance NAT High Availability Firewall Clustering and High Availability Full Featured Layer 3 DNS Proxy and Security 17 Security Traffic Managers Secure LAN Switches Traditional LAN Switches

18 Agenda Security Market and Solutions Overview New NetworkBased Security Architecture Key Features for NetworkWide Security Summary 18

19 SYN and Other HighPerformance DoS Protection Features Good Client Bad Client C1 C TCP SYN TCP SYN ACK Special SEQ TCP ACK Special SEQ TCP SYN TCP SYN ACK Special SEQ BAD TCP ACK Special SEQ Secure Traffic Mgr. Complete TCP Connection NO TCP Connection Protect Against TCP SYN/ACK Flood Attacks MultiGigabit WireSpeed Rate Protection Firewall Protection when Deployed in Front of Firewalls Host A Host B Protection Against 30+ Other DoS Signatures, Including Spoof, Land, SYN, ACK, Smurf, Ping of Death, Connection Open/Close, ICMP Unreachable, ICMP Redirect, SYN Fragment, Malformed TCP Packets and SYN Messages, Illegal TCP Options, Illegal IP Options, IP Options Filtering, Protocol Enforcement, UDP Flood, TCP Flood, Port Scanning, IP Scanning, Information Tunneling, Signature Scanning and Filtering 4 Any Internal Hosts Protects Internal Hosts from Attack 19

20 Transaction, Connection and Bandwidth Rate Limiting ProActive Policies to Thwart Attacks from Malicious Hosts Limits Number of Connections from a Given Host UserConfigurable Limits Based on Application Behavior Ensures Hosts Cannot Hog Network and Application Resources Limits Placed based on Source IP or Other Unique Host Identifiers Granular Control of Limits per Source Host or Subnetwork Sufficient Resources Reserved per Client to Allow Valid Client Transactions Limits on Connection Rate (per Defined Interval) Limits on Simultaneous Connections from a Given Host Rate Limiting of Bandwidth Used by TCP Connections to Prevent Network Abuse When a Client Exceeds Limits, Further Connections from Same Client are Dropped for a PreConfigured Duration 20

21 Application Access Policy Enforcement (Including SPAM) Solution to Enforce Access Control on Large Pool of IP Addresses and Prefixes Apply Explicit Permit and/or Deny Policies to Specific Applications Many Unique Lists of IP Addresses Defined per Application Port Ensures Enforcement of Access Policies to Specific Applications based on Host Credentials Ideal to be Used with IP Reputation Lists for Preventing Mass Abuse (SPAM) Provides Massive Scalability Compared to Standard ACLs Support for Many Million IP Addresses and Prefixes Many Separate Lists of Addresses to be Applied on a Per Application Basis Network Based Approach Protects Services from Illegal Access Right in the Network at the Edge Network Based Protection Increases Resource Efficiency and Security Proactive, Rapid and HighPerformance Protection Early (Mail Processing) 21

22 SPAM Mitigation Solution IP Reputation List Support Security Traffic Manager Prevents SPAM from Known Spammers Relies on IP Reputation Lists from Many 3rd Parties Many Millions of IP Address/Prefixes in a Policy List Dynamic Download of New Lists in Real Time Permit and Deny of Flows Based on Policy Augments Content Based SPAM Solutions on the Server BackEnd CoExists with Other SPAM Mitigation/Prevention Solutions Complement PBSLB with Content Based SPAM Solutions Deep and Bulk Content Scan of Traffic to Filter on Easily Identifiable Signatures, Keywords or Large ASCII Text Configure Signatures or Download them in ASCII/Binary Files Ability to Scan Attachments Attachments (Non Compressed) 22

23 Layer 7 Intrusion Prevention with Signature Based Deep Packet Scan Enforce Layer 7 Security Policies Based on Signatures Perform Deep Packet Scan on All Traffic in a Flow Supports this Capability for TCP, UDP and ICMP Flows Scan May be Performed in Both Directions of the Flow, or Limited to Direction of the Threat (Example: Only Inbound) Support for UserConfigurable Signatures Signatures when Defined May be Applied to Flows of Specific Application Very Long Bulk Signatures May be Downloaded to the Device for Security Enforcement Example: Prevent Threats in File Attachments Provide a Range of Actions upon Signature Match Log, Count, Reset, Drop, Mirror, ReDirect 23

24 DNS Protection and Proxy DNS is the Most Critical and Foundation Application for All IP Services Security Traffic Manager Must Protect DNS using Layer 4 through 7 Mechanisms Layer 4 DNS Service Protection using Rate Limiting and DoS Features Layer 7 DNS Protection Using Filtering on Specific Header Fields Example #1: Disallow Queries to Specific Domains Example #2: Disallow Queries Other than Type xxxx Example #3: Disallow Recursive Queries GeneralPurpose Layer 7 Signature Scanning and Filtering DNS Proxy Feature woud be a Good Value Add Security Traffic Manager Replies to DNS Queries with Healthy IP Addresses Unique Feature that Combines DNS Intelligence and Health Monitoring Users Connect to Available Service/Servers 24

25 SIP and VoIP Security Features Communication Services are Rapidly Migrating to IP with the Use of SIP and VoIP Protocols and Applications Opening Up these Services to Vulnerabilities of an Open Network Threat of Attacks to Critical Servers is Real Protect SIP and VoIP Services by Offering a Range of Layer 4 and Layer 7 Security Features SIP and VoIP Flows May Use Generic UDP Ports for Communication Need to Validate SIP Packets, Messages and Flows over UDP Layer 4 Protection using Rate Limiting and DoS Features Layer 7 Security Features Include Validate SIP Headers to Ensure UDP Traffic Belong to SIP Only Permits SIP Packets to Flow over PreDefined UDP Ports Validates SIP Headers, Version and Methods Ability to Define Valid SIP Methods 25

26 Agenda Security Market and Solutions Overview New NetworkBased Security Architecture Key Features for NetworkWide Security Summary 26

27 Future Security Integrated High Performance Network Architectures Security Traffic Managers and Secure LAN Switches are the Building Blocks of NetworkWide Seven Layer Security Perimeter, Internal LAN, Data Center, Server Farm, and Enterprise Edge Cost Effective and Scalable Solutions are Required Firewalls are Here to Stay (At Least For a While) New Solutions Must Augment and Offload Firewalls Cap and Protect Firewall Investment 27

28 Thank You

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