Learn design considerations for device hardening, layer 2 and layer 3 security issues, denial of. However, the data link layer layer 2 security has not been adequately addressed yet. In order to take effect, one should apply the acl to one or more. An ethernet switch operates at the data link layer layer 2 of the osi model to create a.
Understanding and preparing for network threats is important, and hardening layer 2 is becoming imperative. In this mode switching is performed between two or more network segments as shown in the diagram below. The companion cd includes the sybex test engine, flashcards, and a pdf of the book. Ethernet to the home exposes the layer 2 networks to the users. Cisco ccna notes tech note cisco ccna check list training notes. The data link layer is often overlooked and trusted as it is limited by the organization physical boundaries is this true. Cisco is continuously raising the bar for security, and security feature availability at layer 2 is no.
Layer 2 networks are weak in security point of view. If you are using the 640802 books and documentation please check you have covered the latest additions for the current exam versions. The ccna security certification is the first step towards ciscos new cisco certified security professional ccsp and cisco certified internetworking engineersecurity. This consolidated certification exam tests a candidates ability to implement and administer a wide range of modern it networking technologies. Packed with concise explanations of core security concepts, this book is designed to help you successfully prepare for the exam. The main purpose of this blog is to provide technical tutorials, configuration examples and guides about ip networks with focus on cisco products and technologies. Ccna security 640554 official cert guide pearson it certification.
Cisco networking, vpn ipsec, security, cisco switching, cisco routers, cisco voip callmanager express, windows server, virtualization, hyperv, web security, linux. The secure transfer of these files is critical to network infrastructure security. One key disadvantage of the clientserver architecture is that the server can present a single point of failure. Layer 2 vpn architectures is a comprehensive guide to consolidating network infrastructures and extending vpn services. The companion cd includes the sybex test engine, flashcards, and a pdf. Drawing on ten years of experience, senior network consultant akhil behl offers a complete security framework for use in any cisco ip telephony environment. Pdf network security problems have been well known and ad dressed in the. At cisco, we originally developed the ccna cyberops to help individuals looking into getting started in cybersecurity and security operations. S1 is a layer 2 switch, so it makes forwarding decisions based on the layer 2 header. This is done by specifying a default gateway address that points to a router or layer 3 switch. Learn design considerations for device hardening, layer 2 and layer 3 security issues, denial of service, ipsec vpns, and network identity. Ccna certificationsecurity wikibooks, open books for an. Download ccna security 210260 official cert guide pdf ebook. This can be mitigated by adding redundancy at the server layer.
This is not a comprehensive talk on configuring ethernet switches for security or nac or ieee 802. Ebooks ccna to ccie ccna academya free ccna tutorials. Security features on switches securing layer 2 cisco press. If multiple networks are connected to a switch, you need to specify how the switch forwards the internetwork frames, because the path must be determined at layer three.
Securing cisco ip telephony networks networking technology. At cisco press, our goal is to create indepth technical books of the highest quality and. Networking, ip connectivity, network security, and network automation are some of the topics youll cover as you prepare for the 200301 ccna, the one exam you need to pass to earn the new cisco certified network associate v2. Cisco security experts omar santos and john stuppi share preparation hints and testtaking tips, helping you identify areas of. Exploring layer 2 network security in virtualized environments. In addition to describing the concepts related to layer 2 vpns, this book provides an extensive collection of case.
The chapter examines the integrated security features available on cisco catalyst switches to mitigate threats that result from the weaknesses in layer 2 of the osi model. Secondly, the use of layer 2 protocols over wide areas e. Ccna security 210260 official cert guide is a bestofbreed cisco exam study guide that. The chapter also provides guidelines and recommendations intended to help you understand and configure the layer 2 security features available on cisco switches to build robust networks. The book opens by discussing layer 2 vpn applications utilizing both atom and l2tpv3 protocols and comparing layer 3 versus layer 2 providerprovisioned vpns. Ccna security 210260 official cert guide is part of a recommended learning path from cisco that includes simulation and handson training from authorized cisco learning partners and selfstudy products from cisco press. Printed in the united states of america first printing june 2015 library of congress control number. Application presentation session transport network data link physical application transport internet network access layer 2. The only authorized lab manual for the cisco networking academy ccna security version 2 course.
There have been a number of attacks on the network recently. Management and security features 111 chapter 2 commandline interfaces. Cisco nexus 9000 series nxos security configuration guide, release 7. Cisco also published a white paper8 regarding vlan security in their catalyst series of. Palo alto next generation firewall deployed in layer 2 mode. Access list acl is a sequence of rules that inform the cisco router which network packets it should block and which it should route normaly. Configuring queuing and scheduling on fseries io modules. What books do you recommend for someone who is starting in security. Apr 05, 2008 the data link layer is often overlooked and trusted as it is limited by the organization physical boundaries is this true. This document provides a sample configuration for some of the layer 2 security features, such as port security, dhcp snooping, dynamic address resolution protocol arp inspection and ip source guard, that can be implemented on cisco catalyst layer 3 fixed configuration switches. Media access control security or macsec is the layer 2 hop to hop network traffic protection. This chapter describes layer 2 security basics and security features on switches available to combat network security threats. Layer 2 switch security technical implementation guide cisco. Tools for attacking layer 2 network infrastructure kaihau yeung, dereck fung, and kinyeung wong.
He has more than 10 years of experience in cisco networks, including planning, designing, and implementing large ip networks running igrp, eigrp, and ospf. Cisco security framework overview 1 2 chapter 2 infrastructure device access 2 1 csf methodology assessment 2 2 total visibility 2 2 complete control 2 3 restrict infrastructure device management accessibility 2 3 cisco ios device interactive terminal and management access lines 2 4 aux port 2 5 console port 2 5. When people think about security, often theyre thinking specifically of the layers above layer 2, but theres no reason to limit a security plan to these upper layers. Network security baseline ol1730001 chapter 1 introduction cisco security framework overview. Pdf exploring layer 2 network security in virtualized. After the initial assessment and gap analysis, the cycle continues with remediation planning, which has the goal of closing the gap and satisfying future requirements by updating the overall network architecture. Ccna certificationdata link layer wikibooks, open books. Cisco nexus 9000 series nxos layer 2 switching configuration guide, release 7.
As a result, clientserver networks can scale far larger than peertopeer networks. In layer 2 deployment mode the firewall is configured to perform switching between two or. This model provides a hierarchical and modular method of building networks that makes it easy to implement, manage, scale and troubleshoot networks. Output of the cisco 2912xl switch when the debug mode is turned on. Ccna security study guide fully covers every exam objective. Cisco networking allinone for dummies cheat sheet dummies.
Cisco discovery protocol cdplink layer discovery protocol lldp reconnaissance. To examine the files in a directory, issue the following command using the filename displayed. Cisco expert todd lammle prepares you for the new cisco ccna certification exam. Todds straightforward style provides lively examples, easytounderstand analogies, and realworld scenarios that will not only help you prepare for the exam, but.
Standard acls extended acls ipv6 ipv6 overview ccna test ccna books ccna pdf ccna syllabus ccna exam fees ccna course fees ccna books ccna wiki ccna course material pdf free download learn ccna in 5 days pdf ccna study guide 200125 ccna routing and switching study guide 200120 pdf ccna study guide 2017 free ccna study guide ccna tutorial ccna. Secure spanningtree parameters to prevent stp manipulation attacks. Understand security best practices and how to take advantage of the networking gear you already have. Comprehensively authored by omar santos andjohn stuppi, ccna security 210260 official cert guide is a bestofbreed cisco exam study guide that focuses specifically on the objectives for the ccna security implementing cisco network security iins 210260. Layer 2 security best practices security features on. In the past year, henry has focused on architectural design and implementation in cisco internal networks across australia and the asiapaci. Switc hes do not have security capabilities such as access control lists and packet filtering. Jul 24, 2018 ccna security 210260 section 8 securing layer 2 infrastructure. Cisco, the world leader in network technologies, has released the new cisco certified network associate ccna exam. Reduce security alerts by 2 10x by adding umbrella as the first layer of defense in your security stack, which will block gardenvariety threats that add noise as well advanced threats that no one else sees. Buy ccna security 210260 official cert guide book online at. This book is designed to provide information about the ccna security implementing cisco network security iins 210260 exam.
Enable port security to prevent cam table overflow attacks. Ethernet switching attack resilience varies widely from vendor to vendor. Just like ipsec protects network layer, and ssl protects application data, macsec protects traffic at data link layer layer 2. Cisco with its years of experience in network equipment as well as managing its own network has defined a threelayer hierarchical model. Layer 2 transparent firewalls feature information for layer 2 transparent firewalls security configuration guide. A good security plan should account for all layers, from layer 1 through layer 7. I ask netops for a segment, they give me ports and addresses. Securing cisco ip telephony networks provides comprehensive, uptodate details for securing cisco ip telephony equipment, underlying infrastructure, and telephony applications.
Layer 2 security features on cisco catalyst layer 3 fixed. First, layer 2 devices, unlike routers, are not designed for security. Oct 12, 2019 standard acls extended acls ipv6 ipv6 overview ccna test ccna books ccna pdf ccna syllabus ccna exam fees ccna course fees ccna books ccna wiki ccna course material pdf free download learn ccna in 5 days pdf ccna study guide 200125 ccna routing and switching study guide 200120 pdf ccna study guide 2017 free ccna study guide ccna tutorial ccna. For 20 years, erics area of expertise has been security from layer 2 to. Performing history substitution 2 3 understanding cisco ios command modes 2 4. Cisco switches offer a wide range of security features at layer 2 to protect the network traffic flow and the devices themselves. Reduce security alerts by 210x by adding umbrella as the first layer of defense in your security stack, which will block gardenvariety threats that add noise as well advanced threats that no one else sees. Ccna security 210260 official cert guide is a bestofbreed cisco exam study guide that focuses specifically on the objectives for the ccna security implementing cisco network security iins 210260 exam. Buy ccna security 210260 official cert guide book online at best prices in india on. Cost of security risk mitigation the process of selecting appropriate controls to reduce risk to an acceptable level the level of acceptable risk determined by comparing the risk of security hole exposure to the cost of implementing and enforcing the security policy. This information is not supported or endorsed by cisco systems, inc. Buy ccna security 210260 official cert guide book online. Catalyst 4500 series switch cisco ios software configuration.
If you are new to security, you can use the security fundamentals secfnd book. If youre looking for a free download links of ccna security 210260 official cert guide pdf, epub, docx and torrent then this site is not for you. The cisco networking academy course on ccna security is a handson, careeroriented elearning solution with an emphasis on practical experience to help you develop specialized security skills to expand your ccentlevel skill set and advance your career. To create and configure a cisco network, you need to know about routers and switches to develop and manage secure cisco systems. This article takes a look at some of the most common layer 2 attacks and how they operate. All attacks and mitigation techniques assume a switched ethernet network running ipv4. What is the cisco ios version that the switch is running. Lay the foundation for a successful career in network security. Cisco certification training 200301 cisco ccna avaxhome. A network switch is networking hardware that connects devices on a computer network by. Virtual private networks washington university in st.
Interface 21 accessing the cli through telnet 22 performing commandline processing 23 performing history substitution 23 understanding cisco ios command modes 24 getting a list of. This can be considered a continuation of the work we presented at def con 23 evaluating layer 2 network security. Aug 09, 2018 lay the foundation for a successful career in network security. They get their name from the sense that they may operate primarily on layer 2 of the osi model of networking where the data link information is examined and the switching decisions are based. At cisco press, our goal is to create indepth technical books of the highest quality and value. Restrict infrastructure device management accessibility 23. Best ccna security 210260 certification study books. Lan switch security what hackers know about your switches. My name is harris andrea and im a security and network engineer working in an internet service provider. Layer 2 switches are a category of switch products that are the closest hardware descendants of the network bridge. Ccna security 210260 section 8 securing layer 2 infrastructure. Review designs for campus, edge, and teleworker networks of varying sizes. By itself, an acl has no effect on the routing process.