BGP Vulnerability
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This document discusses vulnerabilities in internet core routing protocols, specifically Border Gateway Protocol (BGP). It describes how BGP routing updates can be manipulated through techniques like TCP spoofing, route hijacking, and man-in-the-middle attacks. The document provides examples of how an attacker could use route maps and AS path prepending to hijack traffic by advertising a more specific network prefix. It recommends network design, access controls, strong authentication, and encrypted connections as policies to help secure BGP routing.
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UNIT I WIRELESS LAN 9 Introduction-WLAN technologies: Infrared, UHF narrowband, spread spectrum -IEEE802.11: System architecture, protocol architecture, physical layer, MAC layer, 802.11b, 802.11a – Hiper LAN: WATM, BRAN, HiperLAN2 – Bluetooth: Architecture, Radio Layer, Baseband layer, Link manager Protocol, security - IEEE802.16-WIMAX: Physical layer, MAC, Spectrum allocation for WIMAX UNIT II MOBILE NETWORK LAYER 9 Introduction - Mobile IP: IP packet delivery, Agent discovery, tunneling and encapsulation, IPV6-Network layer in the internet- Mobile IP session initiation protocol - mobile ad-hoc network: Routing, Destination Sequence distance vector, Dynamic source routing UNIT III MOBILE TRANSPORT LAYER 9 TCP enhancements for wireless protocols - Traditional TCP: Congestion control, fast retransmit/fast recovery, Implications of mobility - Classical TCP improvements: Indirect TCP, Snooping TCP, Mobile TCP, Time out freezing, Selective retransmission, Transaction oriented TCP - TCP over 3G wireless networks. UNIT IV WIRELESS WIDE AREA NETWORK 9 Overview of UTMS Terrestrial Radio access network-UMTS Core network Architecture: 3G-MSC, 3G-SGSN, 3G-GGSN, SMS-GMSC/SMS-IWMSC, Firewall, DNS/DHCP-High speed Downlink packet access (HSDPA)- LTE network architecture and protocol. UNIT V 4G NETWORKS 9 Introduction – 4G vision – 4G features and challenges - Applications of 4G – 4G Technologies: Multicarrier Modulation, Smart antenna techniques, OFDM-MIMO systems, Adaptive Modulation and coding with time slot scheduler, Cognitive Radio.
06 tk 1073 network layer
This document provides instructions on configuring basic settings on a Cisco router, including:
- Setting the hostname of the router
- Configuring login passwords for the console and VTY lines
- Enabling password encryption
The steps outlined include entering privileged mode, going into configuration mode, setting the hostname, configuring login passwords on the console and VTY lines, and enabling password encryption for increased security.
Mpls Services
The document provides an overview of MPLS (Multi-Protocol Label Switching) concepts and components. It discusses how MPLS separates routing from forwarding by using labels to forward packets based on the label rather than the IP address. It describes MPLS components like edge label switching routers (ELSR or PE), label switching routers (LSR or P), and the label distribution protocol (LDP). It also provides examples of MPLS forwarding and MPLS VPN operation.
Lan Network with Redundancy.ppt
This document discusses setting up a redundant LAN network. It describes what a LAN network is and the importance of network redundancy. It then provides details on various methods for implementing redundancy, including creating VPNs, using redundancy protocols like HSRP and VRRP, basic routing, MPLS routing, access lists, NAT/PAT, and configuring redundant LAN connections. The document includes configuration examples and concludes that the project was a valuable learning experience for understanding real-world networking operations.
Lan Network with Redundancy
Now more than ever, today’s businesses require reliable network connectivity and access to corporate resources. Connections to and from business units, vendors and SOHOs are all equally important to keep the continuity when needed. Business runs all day, every day and even in off hours. Most companies run operations around the clock, seven days a week so it’s important to realize that to keep a solid business continuity strategy, redundancy technologies should be considered and/or implemented.
So, we need to keep things up and available all the time. This is sometimes referred to five nines (99.999) uptime. The small percentage of downtime is accounted for unforeseen incidents, or ‘scheduled maintenance’ and usually set to take place during times of least impact, like in the middle of the night, or on holiday weekends if planned. If this is not a part of your systems and network architecture it should be considered if you want to keep a high level of availability. Because things break and unforeseen events do take place, we need to evaluate the need for creating an architecture that is ‘highly available’, or up as much as possible, with failures foreseen ahead of time and the only downtime, is to do planned maintenance.
BGP Overview
A presentation from Matthew Norwood at CHS about BGP. Given on September 15, 2009 at the Nashville Cisco Users Group meeting.
Protocols
The document outlines the seven layers of the OSI model from the application layer down to the physical layer. It provides brief descriptions of common protocols and standards used at each layer of the model. The document also includes a diagram mapping many protocols to the appropriate OSI layer and related standards.
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Spying The Wire
1. The document discusses common attacks on local area networks (LANs), including spoofing, man-in-the-middle attacks, sniffing, TCP/IP session hijacking, remote code execution, and denial-of-service attacks.
2. It describes how each attack works and provides examples of how it could be carried out on a LAN. Specific techniques mentioned include ARP cache poisoning, IP spoofing, DHCP spoofing, switch port stealing, and buffer overflows.
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
ここ3000字までしか入らないけどタイトルの方がたくさん文字入ると思います。
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BGP Vulnerability
- 1. HTTP://IPSECS.COM TIME TO SHUTDOWN INTERNET CORE ROUTER
- 2. COMMUNICATION Analog communication Digital communication Analog communication to digital communication convergence Internet Protocol
- 3. FUTURE COMMUNICATION IP based communication will become the core communication? Scalability and reliability communication infrastructure? Vulnerability and security threat?
- 4. CORE COMMUNICATION Access Control List? Default password issue? Weak password? Unencrypted remote login? Routing protocol vulnerability? We will focus on Border Gateway Protocol (BGP) now
- 5. BGP VULNERABILITY BGP messages TCP vulnerability BGP internet man in the middle Documented on RFC 4272
- 6. BGP MESSAGES BGP states? idle, connect, active, opensent, openconfirm, established BGP message? open, update, notification, keep alive BGP message modification to poison routing table and Denial of Service Complex and nearly impractical
- 8. TCP VULNERABILITY BGP and TCP port 179 SPOOFED TCP RST/FIN? TCP port flooding (SYN) TCP session ends = BGP idle
- 10. BGP MAN IN THE MIDDLE More specific network prefix wins Use tracroute to identify routing from source to destination Use route-map and AS-PATH prepending Static routing to give information about next-hop-router
- 14. SOME POLICIES Design and topology? Access Control List implementation? Complex password Encrypted connection (SSH & HTTPS)
- 15. DEMO BGP ATTACK
- 16. QUESTION? ANSWER
- 17. THANK YOU