Ppt on content addressable memory cisco

© 2012 Cisco and/or its affiliates. All rights reserved. 1 Implementing Intrusion Prevention.

Cisco and/or its affiliates. All rights reserved. 58 When participating in global correlation, the Cisco SensorBase Network provides information to the IPS sensor about IP addresses with/current-name new-name command to change the name of the directory. To verify the contents of flash, enter the dir flash: privileged EXEC command. R1# mkdir ips Create/ that signature into memory. –Unretired instructs the IOS IPS to compile the signature into memory and use it to scan traffic. © 2012 Cisco and/or its /


1 © 2000, Cisco Systems, Inc. 2215 1195_05_2000_c2 Connecting to the IP Multicast World David Mitchell NCNE, NLANR, NCAR, and the Pittsburgh Supercomputing.

trees Uses more memory O(S x G) but you get optimal paths from source to all receivers; minimizes delay Shared trees Uses less memory O(G) / carry initial multicast packet from source –Hack for Bursty Sources (ala SDR) SA Message Contents: –IP Address of Originator (usually an RP) –Number of (S, G)’s pairs being advertised/-maps TTL Scoping ip msdp ttl-threshold For more configuration commands see: ftp://ftpeng.cisco.com/ipmulticast/msdp-commands 154 Use existing (unicast) operation model MBGP (routing) Need/


© 2011 Cisco and/or its affiliates. All rights reserved. 1 Cisco Support Community Expert Series Webcast: Introduction to Cisco Adaptive Security Appliance.

ASA SM8.5 ASA 5500-X8.6 © 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 10 Cisco Cloud Web Security (ScanSafe) Cisco Cloud Web Security provides content scanning and other malware protection service for web traffic./ Cisco and/or its affiliates. All rights reserved. Cisco Confidential 40 Instead of Citrix Access Gateway, enter ASA address. © 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 41 © 2010 Cisco and/or its affiliates. All rights reserved. Cisco /


1 CISCO NETWORKING ACADEMY PROGRAM (CNAP) SEMESTER 1/ MODULE 8 Ethernet Switching.

contain dozens of ports Rather than creating two collision domains, each port creates its own collision domain A switch dynamically builds and maintains a Content-Addressable Memory (CAM) table, holding all of the necessary MAC information for each port 5 CISCO NETWORKING ACADEMY PROGRAM SEMESTER 1/ MODULE 8 Ethernet Switching Switch Operation When only one node is connected to a switch port, the collision/


© 2007 Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter 1 1 Introduction to Routing and Packet Forwarding Routing Protocols and.

used when router is powered up. Stores the router’s bootstrap program.  Non-volatile RAM (NVRAM) - Stores startup configuration. This may include IP addresses (Routing protocol, Hostname of router)  Flash memory - Contains the operating system (Cisco IOS) DOES NOT lose its contents during a reboot  Interfaces - There exist multiple physical interfaces that are used to connect network. Examples of interface types: -Ethernet / fast Ethernet/


© 2007 Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter5 1 Chapter 5: Operating Systems IT Essentials: PC Hardware and Software.

v4.0 ITE PC v4.0 Chapter 5 2 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Purpose of this Presentation  List of chapter objectives  Overview of the chapter contents, including student worksheets student labs  Reflection/Activities for instructors/ v4.0 Chapter 5 10 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Real Mode  Executes only one program at a time  Addresses only 1 MB of system memory at a time  Directly accesses memory and hardware  Subject to crashes  Available/


© 2008 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 1 Chapter 9: Implementing Cisco the Adaptive Security Appliance CCNA Security.

copy running-config startup-configwrite [memory] Presentation_ID 36 © 2008 Cisco Systems, Inc. All rights reserved.Cisco Confidential Introduction to the ASA Firewall/ assigned a security level value, and IP address. Presentation_ID 48 © 2008 Cisco Systems, Inc. All rights reserved.Cisco Confidential Configuring Management Settings and Services 4 -/Presentation_ID 125 © 2008 Cisco Systems, Inc. All rights reserved.Cisco Confidential ACLs ACL with Object Groups - Example 2 Cont. Display the content of ACL-IN. /


© 2000, Cisco Systems, Inc. 4-1 Chapter 4 Operating and Configuring a Cisco IOS Device.

addressing and parameter settings – Options for administration and management Catalyst switch memory has initial configuration with default settings Cisco router will prompt for initial configuration if there is no configuration in memory © 2000, Cisco Systems, Inc. www.cisco/ buffer contents Router> terminal history size linesSet session command buffer size Reviewing Router Command History © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—4-49 show version Command wg_ro_a#show version Cisco Internetwork /


© 2007 Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter5 1 Chapter 5: Operating Systems IT Essentials: PC Hardware and Software.

v4.0 ITE PC v4.0 Chapter 5 2 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Purpose of this Presentation  List of chapter objectives  Overview of the chapter contents, including student worksheets student labs  Reflection/Activities for instructors/ v4.0 Chapter 5 10 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Real Mode  Executes only one program at a time  Addresses only 1 MB of system memory at a time  Directly accesses memory and hardware  Subject to crashes  Available/


Cisco Router 기본 사용법. Hardware Feature 라우터의 Console 연결을 위한 설정 PC 는 RJ-45-to-DB-9 또는 RJ-45-to-DB-25 adapter 가 필요. PC 의 COM port 설정은 9600 bps, 8 data.

arrowLast (previous) command recall Ctrl-N or Down arrowMore recent command recall Router> show historyShow command buffer contents Router> terminal history size linesSet session command buffer size Router Command History ▶ Command 관련 key 사용법 (history/ 저장된 Router Event Message 를 보여줌 CISCO Serial 1 Down Ethernet 0 Protocol Down/ system 명령 boot system flash [filename] : flash Boot from flash memory (Default) boot system tftp [filename] [server address] : Boot from a tftp server Loading the IOS from Flash Flash/


© 2006 Cisco Systems, Inc. All rights reserved. Network Security 2 Module 8 – PIX Security Appliance Contexts, Failover, and Management.

previously generated RSA keys ciscoasa(config )# Saves the CA state write memory ciscoasa(config)# Configures the domain name domain-name name ciscoasa(config)# /address, gateway, server, and file to access the previously downloaded image via TFTP. Follow the directions displayed. © 2007 Cisco Systems, Inc. All rights reserved.SNPA v5.016-23 Managing Software, Licenses, and Configurations © 2007 Cisco Systems, Inc. All rights reserved.SNPA v5.016-24 Viewing Directory Contents Displays the directory contents/


1 © 2001, Cisco Systems, Inc. All rights reserved. Session Number Presentation_ID Next Generation Network Complementing The Internet For Converged Service.

of Ethernet Operational Ease of Ethernet Flexibility of the Internet Content Richness of Cable/Television Security of a Private Network Security /protection services 28 © 2001, Cisco Systems, Inc. All rights reserved. Presentation_ID Memory File Systems Rate Limiting etc. Memory File Systems Rate Limiting etc/ Performance, Reliability, Availability Cisco is addressing carrier class requirements 37 © 2001, Cisco Systems, Inc. All rights reserved. Presentation_ID Future Commitment Cisco fully committed to open/


Presentation Title CCNA Curricula Overview Topic

introductory level and less experienced learners Fewer interactive activities and more content promoting a deeper, theoretical understanding of networking concepts The curriculum discusses/ PC Hardware Recommendations Processor: Intel Processor Pentium 4, equivalent or higher Memory: 1.0 GB or higher of installed RAM [minimum 512 MB /Focus on performance-based skills and hands-on practice Localization addresses worldwide skills gap The Cisco Certified Entry Network Technician, or CCENT. certification, is/


© 2008 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 1 Chapter 4: Routing Concepts Routing Protocols.

Routers use Cisco IOS Memory and storage (RAM, ROM, NVRAM, Flash, hard drive)  Routers utilize the following memory: Functions of a Router Routers are Computers Presentation_ID 7 © 2008 Cisco Systems, Inc. All rights reserved.Cisco Confidential  /on a Router Configure Router Interfaces Presentation_ID 21 © 2008 Cisco Systems, Inc. All rights reserved.Cisco Confidential  Configure interface with IPv6 address and subnet mask. Use the ipv6 address ipv6-address/ipv6- length [link-local | eui-64]interface /


Agenda Cisco Application Networking Services Customer Challenges

Apps L7: Application Optimization Content Distribution TCP Flow Optimizations (TFO) Persistent Session-Based Compression Data Redundancy Elimination (DRE) L4: Transport Optimization Application Classification and Policy Engine Logical and Physical Integration Network Infrastructure Security Monitoring Quality of Service Core Routing & Switching Services Application-Specific Intelligence Compression doesn’t address latency - every message must still traverse the WAN Cisco ‘Application Adapters’ eliminate/


Next Generation Network Security Tech.

Voice, Video and Integrated Data ISDN Telecommuters PSTN Mobile Users Content Networking Storage Cisco’s Vision for Integrated Network Security Network Integration Embedded Transparent / LOOK AND SEE HOW SOME OF THESE SOLUTIONS ADDRESS E-BUSINESS CHALLENGES Internet Cisco SAFE: Architectural Framework for Integrated Network Security Application/. Cisco 7400 Series VPN Router Standard Components VPN Acceleration Module (VAM) for 140 Mbps 3DES encryption performance Embedded route processor and 128 MB memory (/


Winter 2008 Router Design1 Overview of Generic Router Architecture Input-Queued Switches (Routers) IP Address Look-up Algorithms Packet Classification.

up to 160 Gb/s throughput up to 10 Gb/s ports winter 2008 Router Design4 High Capacity Router Cisco CRS-1 –up to 46 Tb/s thruput two rack types line card rack –640 Gb/s /Design51 Exact Matches in Ethernet Switches (Associative Lookup) associative memory (aka Content Addressable Memory, CAM) compares all entries in parallel against incoming data Network address Data Associative Memory (“CAM”) Address 48bits Match Location Address “Normal” Memory Data Port winter 2008 Router Design52 Exact Matches in Ethernet/


© 2007 Cisco Systems, Inc. All rights reserved.Cisco Public 1 Version 4.0 Introduction to Routing and Packet Forwarding Routing Protocols and Concepts.

copy of configuration file. Stores routing table. RAM contents lost when power is off. –Read-only memory (ROM) - Holds diagnostic software used when router is powered up. Stores the router’s bootstrap program. –Non-volatile RAM (NVRAM) - Stores startup configuration. This may include IP addresses (Routing protocol, Hostname of router). –Flash memory - Contains the operating system (Cisco IOS). –Interfaces - There exist multiple physical interfaces that/


© 2007 Cisco Systems, Inc. All rights reserved.Cisco Public 1 Cisco Certified Network Associate CCNA 640-802 Routing Protocols and Concepts Asst.Prof.

copy of configuration file. Stores routing table. RAM contents lost when power is off  Read-only memory (ROM) - Holds diagnostic software used when router is powered up. Stores the router’s bootstrap program.  Non-volatile RAM (NVRAM) - Stores startup configuration. This may include IP addresses (Routing protocol, Hostname of router)  Flash memory - Contains the operating system (Cisco IOS)  Interfaces - There exist multiple physical interfaces that/


© 2008 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 1 Chapter 4: Routing Concepts Routing Protocols.

Routers use Cisco IOS Memory and storage (RAM, ROM, NVRAM, Flash, hard drive)  Routers utilize the following memory: Functions of a Router Routers are Computers Presentation_ID 8 © 2008 Cisco Systems, Inc. All rights reserved.Cisco Confidential  /on a Router Configure Router Interfaces Presentation_ID 22 © 2008 Cisco Systems, Inc. All rights reserved.Cisco Confidential  Configure interface with IPv6 address and subnet mask. Use the ipv6 address ipv6-address/ipv6- length [link-local | eui-64]interface /


© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE I Chapter 6 1 Living in a Network-Centric World Network Fundamentals – Chapter 1 Modified.

businesses, to address emergencies, to inform individuals, and to support education, science, and government. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter/ continues to increase, the memory queues fill up and packets are dropped. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 36/ into single hand-held devices with continuous connectivity to providers of services and content.  Increased Availability of Services –To meet user demands, new services are/


© 2007-2010 Cisco Systems, Inc. All rights reserved. Cisco Public ITE PC v4.1 Chapter 6 1 Chapter 8: Mobile Devices IT Essentials: PC Hardware and Software.

replaceable: Battery Memory card Subscriber Identity Module (SIM) card ITE PC v4.1 Chapter 6 5 © 2007-2010 Cisco Systems, Inc. All rights reserved. Cisco Public Non-/ITE PC v4.1 Chapter 6 9 © 2007-2010 Cisco Systems, Inc. All rights reserved. Cisco Public Application and Content Sources  Some apps can be downloaded free and /© 2007-2010 Cisco Systems, Inc. All rights reserved. Cisco Public Introduction to Email  Information needed to set up an email account: Display name, email address, protocol used /


© 2007 – 2010, Cisco Systems, Inc. All rights reserved. Cisco Public TSHOOT v6 Chapter 6 1 Chapter 6: Troubleshooting Addressing Services CCNP TSHOOT:

corresponding translated IP address are kept in a NAT table.  NAT does the reverse for the destination address of the responding IP packets based on the content of the NAT table.  NAT can also be used to renumber global address space when switching / down down Chapter 6 43 © 2007 – 2010, Cisco Systems, Inc. All rights reserved. Cisco Public DHCP Troubleshooting Example 1 – Cont. R1# show ip dhcp server statistics Memory usage 9106 Address pools 1 Database agents 0 Automatic bindings 0 Manual bindings/


CSci5221: Router Design 1 Router Design Overview of Generic Router Architecture Input-Queued Switches (Routers) IP Address Look-up Algorithms Packet Classification.

scribes? CSci5221: Router Design Routers in a Network... CSci5221: Router Design 3 Sample Routers and Switches Cisco 12416 Router up to 160 Gb/s throughput up to 10 Gb/s ports 3Com 4950 24 /Exact Matches in Ethernet Switches (Associative Lookup) associative memory (aka Content Addressable Memory, CAM) compares all entries in parallel against incoming data Network address Data Associative Memory (“CAM”) Address 48bits Match Location Address “Normal” Memory Data Port CSci5221: Router Design 52 Exact Matches /


© 2007 Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter 1 1 Routing Protocols and Concepts Introduction to Routing and Packet Forwarding.

a packet’s destination IP address and determine the best path from the routing table ITE PC v4.0 Chapter 1 6 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Router as a Computer  Router components and their functions”  CPU - Executes operating system instructions  Random access memory (RAM) - Contains the running copy of configuration file. Stores routing table. Contents lost when power is off/


© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE I Chapter 6 1 VLANs LAN Switching and Wireless – Chapter 3 Modified by Tony Chen 04/01/2008.

a VLAN database file, called vlan.dat. The vlan.dat file is located in the flash memory. –The VLAN trunking protocol (VTP), can only learn normal range VLANs.  Extended Range/ –The figure shows an example of using the show vlan brief command to display the contents of the vlan.dat file. –In addition to entering a single VLAN ID, you can/ connectivity to the WEB/TFTP server found at IP address 172.17.10.30. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 57 Summary  VLANS Allows an/


4/11/2003 Edward Chow Content Switch 1 Introduction to Content Switch C. Edward Chow Department of Computer Science University of Colorado at Colorado.

engines feature up to 16 port-level network processors with up to 128 MB of memory for wire-speed delivery of Web content. Support for "sticky" connections based on IP address, Secure Socket Layer (SSL) session ID, and cookies ensures reliability and security for e- commerce transactions. The unique Cisco content replication technology enables dynamic expansion of site capacity in response to sudden "flash crowds/


Cisco Confidential 1 © 2010 Cisco and/or its affiliates. All rights reserved. Welcome Technical Services Virtual Boot Camp Session 8 Technical Services.

connect Connect to Another CLI copy Copy a file cp Copy a file delete Delete managed objects dir Show content of dir enable Enable end Go to exec mode erase Erase erase-log-config Erase the mgmt logging config /for support. © 2011 Cisco and/or its affiliates. All rights reserved.Cisco Public BRKCOM-3001 99 System Event Log (SEL) - Events Supported  Server BIOS events 3 Kinds of equipment end-points: Memory Unit (DIMM) ECC errors, Address Parity, Memory Mismatch Processor Unit Memory Mirroring, Sparing, SMI/


© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE I Chapter 6 1 VLANs LAN Switching and Wireless – Chapter 3 Modified by Michael W Haines.

a VLAN database file, called vlan.dat. The vlan.dat file is located in the flash memory. –The VLAN trunking protocol (VTP), can only learn normal range VLANs.  Extended Range/ –The figure shows an example of using the show vlan brief command to display the contents of the vlan.dat file. –In addition to entering a single VLAN ID, you can/ connectivity to the WEB/TFTP server found at IP address 172.17.10.30. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 56 Summary  VLANS Allows an/


© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE I Chapter 6 1 VLANs LAN Switching and Wireless – Chapter 3 Modified by Tony Chen 01/26/2010.

a VLAN database file, called vlan.dat. The vlan.dat file is located in the flash memory. –The VLAN trunking protocol (VTP), can only learn normal range VLANs.  Extended Range/ –The figure shows an example of using the show vlan brief command to display the contents of the vlan.dat file. –In addition to entering a single VLAN ID, you / connectivity to the student e-mail server found at IP address 172.17.20.10. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 64 4. VLAN and IP Subnets/


Lesson 3a © 2005 Cisco Systems, Inc. All rights reserved. CSPFA v4.0—19-1 System Management and Maintenance.

)# Displays IP addresses permitted to access the security appliance via Telnet. show running-config telnet [timeout] firewall# © 2005 Cisco Systems, Inc./Removes any previously generated RSA keys firewall(config)# Saves the CA state write memory firewall(config)# Configures the domain name domain-name name firewall(config)# Generates/10.0.0.11 192.168.0.0 dir © 2005 Cisco Systems, Inc. All rights reserved. SNPA v4.0—19-25 Viewing File Contents Displays the contents of a file. more {/ascii | /binary| /ebcdic /


© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE I Chapter 6 1 VLANs LAN Switching and Wireless – Chapter 3 Modified by Tony Chen 04/01/2008.

a VLAN database file, called vlan.dat. The vlan.dat file is located in the flash memory. –The VLAN trunking protocol (VTP), can only learn normal range VLANs.  Extended Range/ –The figure shows an example of using the show vlan brief command to display the contents of the vlan.dat file. –In addition to entering a single VLAN ID, you can/ connectivity to the WEB/TFTP server found at IP address 172.17.10.30. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 57 Summary  VLANS Allows an/


1 © 2004, Cisco Systems, Inc. All rights reserved. CCNA 2 v3.1 Module 1 WANs and Routers.

Cisco Systems, Inc. All rights reserved. NVRAM Provides storage for the startup configuration file Retains content when a router is powered down or restarted 17 © 2004, Cisco Systems, Inc. All rights reserved. Flash Memory /addressing Addresses that represent network topologies Best path selection Dynamic or static routing Switching 25 © 2004, Cisco Systems, Inc. All rights reserved. Router Internal Components 26 © 2004, Cisco Systems, Inc. All rights reserved. Router Internal Components 27 © 2004, Cisco/


1 © 2001, Cisco Systems, Inc. All rights reserved. Session Number Presentation_ID MPLS Introduction.

all labels for FECs without next-hop Free memory and label space Label Retention Modes 17 © 2001, Cisco Systems, Inc. All rights reserved. Presentation_ID/for increased range General form : : Registered AS number : : Registered IP address 78 © 2001, Cisco Systems, Inc. All rights reserved. Presentation_ID 78 MPLS VPN Connection Model MP-BGP/-list presence with show ip interface. Verify access-list contents with show access-list. 145 © 2001, Cisco Systems, Inc. All rights reserved. Presentation_ID 145 TDP /


© 2007 – 2010, Cisco Systems, Inc. All rights reserved. Cisco Public ITE PC v4.1 Chapter 1 1 Chapter 1: Introduction to the Personal Computer IT Essentials:

memory, which means that the contents are erased when the computer is powered off  More RAM means more capacity to hold and process large programs and files, as well as enhance system performance. ITE PC v4.1 Chapter 1 16 © 2007 – 2010, Cisco Systems, Inc. All rights reserved. Cisco Public Memory Modules  Memory modules are memory//Output (I/O) Port Addresses Direct Memory Access (DMA) ITE PC v4.1 Chapter 1 29 © 2007 – 2010, Cisco Systems, Inc. All rights reserved. Cisco Public Chapter 1 Summary  /


Operating and Configuring a Cisco IOS Device

Protocol addressing and parameter settings. Options for administration and management. Catalyst switch memory has initial configuration with default settings. Cisco router will prompt for initial configuration if there is no configuration in memory. Purpose:/ startup-config Destination filename [startup-config]? Building configuration… Emphasize: Copying to NVRAM overwrites the contents in NVRAM. Copies the current configuration to NVRAM Configuring Router Identification Router Name Router(config)#hostname/


1 © 2009 Cisco Learning Institute. CCNA Security Chapter Two Securing Network Devices.

Cisco Learning Institute. Restoring Primary bootset To restore a primary bootset from a secure archive: 1.Reload the router using the reload command. 2.From ROMMON mode, enter the dir command to list the contents/line. 41 © 2009 Cisco Learning Institute. Implementing Router Logging Buffered logging: Store log messages in router memory. Log messages are stored / -Disable gratuitous and proxy Address Resolution Protocol (ARP) -Disable IP-directed broadcast 57 © 2009 Cisco Learning Institute. SDM Security Audit/


IST 228Ch4Cisco IOS1 What we will be able to do?

Serial Interface (HSSI) IST 228Ch4Cisco IOS12 IST 228Ch4Cisco IOS13 Bringing Up an Interface and Configuring an IP Address Router>enable Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config/Cisco 1984G, 2926, 4000, 5000, and 6000 series switches IST 228Ch4Cisco IOS23 Router Components: Flash Memory Erasable, programmable, read-only memory (EPROM) Not typically modified during normal operations Can be upgraded or erased when necessary Content of flash memory/


© 2006 Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter 7 1 Chapter 7: Printers and Scanners IT Essentials: PC Hardware and Software.

Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter 7 22 Page Description Languages  Page description language (PDL) is a code that describes the contents of a document in a language that a printer can understand. These contents/ postscript; and because it requires less printer memory, some jobs may only print if sent /Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter 7 63 1. Gather Data from the Customer  Customer information –Company name, contact name, address/


Ch 3 Firewall and Perimeter Security. Contents Firewall –packet-filter firewall: filters at the network or transport layer –proxy firewall: filters at.

Products RealSecure –www.iss.net/securing_e-business/security_products/intrusion _detection/ Cisco Secure IDS –www.cisco.com/warp/public/cc/pd/sqsw/sqidsz/ Network ICE –www./a new unique flow is detected, the information is hashed and stored in a memory-resident table frag2 - allow data fragment to be reassembled so that snort can / proxy servers to provide large hard-disk storage for content cache. Summary - 2 NAT –solve the problem of IP address limitation –provide load balance and redundancy –Foure modes:/


Oct-03 ©Cisco Systems - CCNA Semester 4 Version 3 Comp14 Mod6 – St. Lawrence College – Cornwall ON Canada – Clark slide 1 Cisco Systems CCNA Version 3.

Print services Dynamic Host Configuration Protocol (DHCP) Firewall: Proxy or Network Address Translation (NAT) Oct-03 ©Cisco Systems - CCNA Semester 4 Version 3 Comp14 Mod6 – St. Lawrence College/ all services as some of the RMON groups require extensive overhead (memory and processor power). Most stand-alone RMON probes will typically support /through the network interface for later review. This group actually stores the contents of each packet flowing into the interface and meeting the filter criteria/


Real-Life Hardware: Cisco q Introduction to Cisco IOS.

cache Packet buffers Packet hold queues Router Components NVRAM NVRAM Non-volatile RAM Slow Content is NOT LOST on power off. Usually less than 100 Kbytes Stores Exclusively/Bringing up a Router Boot-up process: 1: POST 2: Looks for the Cisco IOS from Flash memory 3: IOS loads & looks for a valid configuration; startup-configuration startup-configuration stored/shutdown shutdown show interface Configuring an IP Address on an Interface Router(config)#int e0 Router(config-if)#ip address 172.16.10.2 255.255.255./


© 2006 Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter 5 1 Chapter 12: Advanced Operating Systems IT Essentials: PC Hardware and.

2006 Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter 5 2 Purpose of this Presentation  List of chapter objectives  Overview of the chapter contents,/server Resolves URLs for websites to their IP addresses Automates assignment of IP addresses © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter 5 11/performance of operating systems © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter 5 19 Virtual Memory  Swap file uses free space/


© 2006 Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter 5 1 Chapter 5: Operating Systems IT Essentials: PC Hardware and Software.

PC Hardware and Software v4.0 © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter 5 2 Purpose of this Presentation  List of chapter objectives  Overview of the chapter contents, including student worksheets student labs  Reflection// multi-tasked. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter 5 10 Real Mode  Executes only one program at a time  Addresses only 1 MB of system memory at a time  Directly accesses memory and hardware  Subject to/


Sybex CCNA 640-802 Chapter 5: Managing a Cisco Internetwork 1.

Cisco IOS into flash memory RAM –Holds packet buffers, routing tables, & software –Stores running-config 3/252 Cisco Router Components (cont) ROM –Starts & maintains the router Flash Memory –Holds Cisco/TFTP host Router#copy flash tftp This command copies the contents of flash (the old IOS version) to the TFTP/ attached” devices). or Router#sh cdp neighbor detail –Detailed information; hostname, IP address, etc 30 Getting Interface Traffic & Port Information Interface Traffic Information: –CDP packets /


1 © 2002, Cisco Systems, Inc. All rights reserved. l2-security-bh.ppt Hacking Layer 2: Fun with Ethernet Switches Sean Convery, Cisco Systems

Manufacture FFFF.FFFF.FFFF All F’s = Broadcast 48 Bit Hexadecimal (Base16) Unique Layer Two Address CAM Table stands for Content Addressable Memory The CAM Table stores information such as MAC addresses available on physical ports with their associated VLAN parameters CAM Tables have a fixed size 10 © 2002, Cisco Systems, Inc. All rights reserved. l2-security-bh.ppt Normal CAM Behaviour 1/3 MAC A/


© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE I Chapter 6 1 VLANs LAN Switching and Wireless – Chapter 3 Sandra Coleman, CCNA, CCAI.

VLAN database file, called vlan.dat. The vlan.dat file is located in the flash memory. –The VLAN trunking protocol (VTP), can only learn normal range VLANs.  Extended/The figure shows an example of using the show vlan brief command to display the contents of the vlan.dat file. –In addition to entering a single VLAN ID, /PC1 has regained connectivity to the WEB/TFTP server found at IP address 172.17.10.30. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 48 Ch. 3…over…great!  Study/


© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE I Chapter 6 1 Configure a Switch LAN Switching and Wireless – Chapter 2.

full option sets full-duplex mode.  The half option sets half-duplex mode. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 8 Switch MAC Address Tables  Step 1. The switch receives a broadcast frame from PC 1 on Port 1/ Step 5. Load any helper files using the load_helper command. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 30 Conti…  Step 6. Display the contents of Flash memory using the dir flash command:  Step 7. Rename the configuration file to/


© 2002, Cisco Systems, Inc. CSPFA 2.1—3-1 PIX Firewall.

outside Stateful Packet Filtering Limits information into a network based not only on destination and source address, but also on packet data content PIX Firewall—What Is it? Stateful firewall with high security and fast performance Adaptive security /net write erase write floppy write memory write standby write terminal show? show Commands The following are show commands: show history show memory show version show xlate show cpu usage show interface show ip address © 2002, Cisco Systems, Inc. CSPFA 2.1/


CISCO SYSTEMS CCNA VERSION 3 SEMESTER 4 MODULE 6 CPIS 371 Computer Network 1 Oct-03 ©Cisco Systems - CCNA Semester 4 Version 3 Comp14 Mod6 – St. Lawrence.

SNMP protocol Oct-03 ©Cisco Systems - CCNA Semester 4 Version 3 Comp14 Mod6 – St. Lawrence College – Cornwall ON Canada 66 SNMPv2c addressed limitations in SNMPv1 introduced /to support all services as some of the RMON groups require extensive overhead (memory and processor power). Most stand-alone RMON probes will typically support all /flowing through the network interface for later review. This group actually stores the contents of each packet flowing into the interface and meeting the filter criteria. 9/


Ads by Google