Network security protocols

This thesis proposes and implements a new and novel solution on simulators and real devices to solve the mobility problem in a VPN. The new solution adds mobility support to existing L2TP/IPsec (Layer 2 Tunneling Protocol/IP Security) tunnels. The new solution tunnels Layer 2 packets between VPN clients and a VPN server without using Mobile IP, without incurring tunnel-re-establishment at handoff, without losing packets during handoff, achieves better security than current mobility solutions for VPN, and supports fast handoff in IPv4 networks.

123p runthenight07 01-03-2023 5 4   Download

Chapter 5 - Wireless security. After studying this chapter you will be able to understand: Wireless concepts, Securing digital cellular telephony, wireless application protocol, wireless transport layer security, hardening wireless local area networks, IEEE 802.11, wired equivalent privacy (WEP).

20p nhanmotchut_3 20-10-2016 67 4   Download

An integrated collection of tools for network monitoring and control. Single operator interface Minimal amount of separate equipment. Software and network communications capability built into the existing equipment SNMP key elements: Management station Managament agent Management information base Network Management protocol Get, Set and Notify

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We now begin our look at building protocols using the basic tools that we have discussed. The discussion in this lecture will focus on issues of key establishment and the associated notion of authentication These protocols are not real, but instead are meant to serve just as a high-level survey Later lectures will go into specific protocols and will uncover practical challenges faced when implementing these protocols

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Used to connect two private networks together via the Internet Used to connect remote users to a private network via the Internet This could be done by opening your firewall to the LAN networking protocols (NETBIOS, NFS NetWare, AppleTalk)) But… it would also make those protocols available to any one on the Internet and they could come into your LAN at will Effectively make the whole Internet your LAN Exposes all of your data Anyone can easily take advantage of vulnerabilities in your internal hosts No privacy Better solution is to use a VPN in conjunction with your firewall ...

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You don’t have to know all of the details You do need to know your system What services it is providing What protocols are involved What vulnerabilities is has How to minimize the risks

18p muathu_102 28-01-2013 39 1   Download

Security Service – a service provided by a protocol layer of communicating open systems, which ensures adequate security of the systems or of data transfers RFC 2828 – a processing or communication service that is provided by a system to give a specific kind of protection to system resources; security services implement security policies and are implemented bt security mechanisms.

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Raw Sockets let you program at just above the network (IP) layer You could program at the IP level using the IP API but you can’t get at ICMP Raw Sockets expose ICMP you get a Raw Packet and populate the entire packet yourself for high level protocols like TCP and UDP you lose all of the functionality implemented in those layers choosing to use a Raw Socket must be weighed carefully Raw Sockets can be dangerous Raw Sockets can be against the law http://www.kumite.com/rsnbrgr/rob/grcspoof/cnn/ ...

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Used to communicate IP status and error messages between hosts and routers Uses IP to route its messages between hosts Must be implemented with IP remember, IP is just a packet delivery system transmits and routes datagrams from sources to destinations through a series of interconnected networks it has a checksum in the IP header to detect lost bits no error detection on the datagram payload though but has no native mechanism for source host notification This is where ICMP comes in its used to report IP errors to the source host ICMP data is carried as the payload of an IP datagram specifie...

19p muathu_102 28-01-2013 51 3   Download

Ethereal là 1 phần mềm kiểm tra giao thức mạng (Network Protocol Analyzer) có tác dụng lấy các gói tin từ card mạng và phân tích các thành phần, nhằm phân tích đến mức độ sâu nhất: từng bít của gói tin giúp cho ta hiểu và kiểm soát các giao dịch mạng của máy tính mình. Ngoài ra Ethereal còn có chức năng thống kê các giao dịch đó - rất quan trọng cho ai làm về security...

18p kemoc9 18-07-2011 275 77   Download

No internal timer, battery. No keyboard, display, network interface. Current generation: μ-processor: 16-bits, 10MHz. RAM: 4K. ROM: 100K for code storage. E2PROM (105 updates ): 64K for data storage. I/O: serial (9600 bps), Contactless protocols: MiFare, FeliCa, Calypso.

12p nggianglx 07-12-2010 93 17   Download

Định tuyến và lọc lưu lượng mạng - Phần 1 Trong bài viết này chúng tôi sẽ giới thiệu cho các bạn về cấu hình router và tường lửa cũng như NAT, đây là những kiến thức được yêu cầu trong bài kiểm tra 70-642 về Windows Server 2008 của Microsoft. Các thuật ngữ các bạn cần hiểu: • • • • • • • • • • • • • • Router Metric Hop Static routes Dynamic routes Router Information Protocol (RIP) Split-horizon Open Shortest Path First (OSPF) Firewall Stateful firewall Windows Firewall Windows Firewall with Advanced Security Usage profile Network address...

18p alone 20-07-2010 132 46   Download

Hướng Dẫn Cấu Hình Linkpro WLN-300R(L2) --- ☼ --1. Chuẩn Bị Cấu Hình: a. Xác Định Thiết Bị Cần Cấu Hình: · · · · · · · · Default IP Address: Subnesk Mask: Username: Passworld: SSID default: MSSID default: Security: DHCP: 192.168.0.1 255.255.255.0 admin admin wireless None None Enable b. Cấu Hình IP Máy Tính: · · · · Click chuột vào Start → Control Panel → Network Connections. Click phải chuột biểu tượng card mạng đang hoạt động chọn Properties Trong khung “This connection use the following items” ta kéo xuống cuối cùng chọn mục “Internet protocol TCP/IP” và chọn...

3p hangkute_101091 15-07-2010 414 34   Download