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This document discusses network address translation (NAT) features and how to design a secure NAT network. It describes different types of NAT including static, dynamic, and masquerading NAT. When implementing NAT, considerations include network size, security needs, location, IP addressing, and data flow rates. Securing the NAT network involves using routing/remote access filters, address pools, special ports, and VPN connections. The optimal design devotes one machine to act as the NAT server, connecting over persistent routes with multiple internet connections to enhance performance and availability.
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This document provides an overview of IPSec, including:
- IPSec aims to secure IP communications by providing authentication, integrity, and confidentiality. It operates in transport and tunnel modes.
- The Internet Key Exchange (IKE) negotiates and establishes security associations to secure communications between two endpoints.
- IPSec policy defines which encryption, hashing, and authentication methods apply to different network traffic using protection suites and proposals.
Ipsec
IP Security (IPSec) provides authentication and confidentiality for IP packets. It uses security associations to define how packets are processed and secured. IPSec supports two main modes - transport mode for host-to-host traffic and tunnel mode for gateway-to-gateway VPNs. It uses the Authentication Header (AH) or Encapsulating Security Payload (ESP) to authenticate packets and optionally provide confidentiality through encryption. However, IPSec faces challenges working through Network Address Translation devices which are common on the Internet.
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A quick wrap up of presentations at ims world forum issue 1
Infonetics white paper: Security at the Speed of VoLTE
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Session 2 Tp 2
The document discusses network design using TCP/IP. It covers IP addressing, subnet masks, default gateways, and subnetting. It also discusses network security methods like IP packet filtering, encryption, authentication, and IPSec. Optimizing the subnet design, IP performance, remote subnets, and quality of service can create an effective network infrastructure.
MikroTik Basic Training Class - Online Moduls - English
This document provides an overview of an introductory training class on MikroTik router configuration. It discusses MikroTik's history as a router software and hardware manufacturer, the capabilities of their RouterOS software and RouterBoard hardware, and how to connect to and configure a MikroTik router using Winbox. The training covers topics like the MikroTik interface, network addressing, static and dynamic routing, and basic router management tools.
Ession 5 Tp 5
DNS servers convert web addresses to IP addresses through a process called name resolution. Routing provides invisibility of internal networks, integration with existing networks, and restriction of traffic between internal/external networks. Common routing topologies are mesh, ring, and star, while WAN technologies include leased telephone lines, dial-on-demand, frame relay, and VPN. Security can be added through authentication methods like EAP, MS-CHAP v2, and CHAP within Routing and Remote Access. Static and dynamic routing differ in their updating of routing tables. Windows tools like ping, tracert, and pathping help troubleshoot TCP/IP routing issues.
Session 5 Tp 5
DNS servers convert web addresses to IP addresses through a process called name resolution. Routing provides invisibility of internal networks and integration with existing networks while restricting traffic between internal, external, and other networks. Key considerations for routing network design include topology, WAN technology, routing protocols, authentication, and security. Troubleshooting tools like Ping, Tracert, and Pathping help locate routing issues.
Ession 5 Tp 5
DNS servers convert web addresses to IP addresses through a process called name resolution. Routing provides invisibility of internal networks and integration with existing networks while restricting traffic between the internal network and internet or other external networks. Common routing network topologies are mesh, ring and star, while common WAN technologies are leased telephone lines, dial-on-demand connections, frame relay and VPN. Security can be added through authentication methods like EAP, MS-CHAP v2, and restricting remote access using properties.
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Cisco routers can serve as VPN servers to provide secure remote access to internal networks. The router must be configured with AAA authentication and authorization, virtual templates to dynamically assign interfaces, and VPN protocols like IPSec or VPDN to encrypt traffic and establish secure tunnels. Example configurations showed setting IKE/IPSec policies, client pools, dynamic maps, and applying the crypto map to the external interface to enable VPN connectivity.
CCNA Network Services
The document discusses network services including network address translation (NAT), Dynamic Host Configuration Protocol (DHCP), and Domain Name Services (DNS). It describes how NAT allows private IP addresses to access the internet using public IP addresses through static NAT, dynamic NAT, or port address translation (PAT). DHCP automatically assigns IP addresses to devices on a network, while DNS translates names to IP addresses. The document also discusses configuring these services on Cisco routers using both CLI commands and the Cisco Security Device Manager web tool.
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This document describes a CCN CEP project involving 3 group members to simulate a LAN network. The project involves configuring IP addresses, routers, servers, and VLANs. Connectivity is tested using ping commands between devices like PCs, servers, and across VLANs which are successful. Basic network functions like email and web access are also verified to work as intended. The simulation validates the network design and configuration.
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VPN allows remote users to securely connect to a private network over the public Internet. It uses protocols like PPTP and L2TP to encapsulate data and send it through an encrypted tunnel. The VPN server must be configured to assign clients an IP address and authenticate users, while the VPN client needs to be set up to connect to the server and access the private network resources. Encryption protects the data in transit between the client and server.
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Take a sprinkling of Windows 7, add Windows Server 2008 R2, IPv6 and IPsec and you have a solution that will allow direct access to your corporate network without the need for VPNs. Come to these demo-rich sessions and learn how to integrate DirectAccess into your environment. In Part 1 learn about IPv6 addressing, host configuration and transitioning technologies including 6to4, ISATAP, Teredo and IPHTTPS. Through a series of demos learn how to build an IPv6 Network and interoperate with IPv4 networks and hosts. In Part 2 we add the details of IPSec, and components that are only available with Windows 7 and Windows Server 2008 R2 to build the DirectAccess infrastructure. Learn how to control access to corporate resources and manage Internet connected PCs through group policy. Part 1 is highly recommended as a prerequisite for Part 2.
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-------------------------------------------------
Configure a router to route between multiple directly connected networks
Describe the primary functions and features of a router.
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This document covers routing concepts and configuration on Cisco routers. It discusses the functions of routers, including interconnecting networks and choosing the best paths using routing tables. It also covers building a routing table through directly connected networks, static routes, and dynamic routing protocols. The objectives include configuring router interfaces, verifying connectivity, and explaining the routing decision process.
CCNAv5 - S2: Chapter4 Routing Concepts
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This document provides instructions for configuring a Cisco router to function as a VPN server using different VPN protocols. It discusses the basic configuration of the router interfaces, routing protocols, AAA authentication, virtual templates, VPDN, and IPSec. Key steps include creating local users, configuring interfaces, enabling AAA with local authentication, defining a virtual template, enabling VPDN with PPTP protocol, and configuring IPSec transforms, policies and dynamic crypto maps.
Chapter 15 : routing concepts
1) Configure a router to route between multiple directly connected networks
2) Describe the primary functions and features of a router.
3) Explain how routers use information in data packets to make forwarding decisions in a small- to medium-sized business network.
4) Explain the encapsulation and de-encapsulation process used by routers when switching packets between interfaces.
5) Compare ways in which a router builds a routing table when operating in a small- to medium-sized business network.
6) Explain routing table entries for directly connected networks.
7) Explain how a router builds a routing table of directly connected networks.
8) Explain how a router builds a routing table using static routes.
9) Explain how a router builds a routing table using a dynamic routing protocol.
Bcc network connection
The document is a project report submitted to the Computer Networking Lab at City University summarizing a proposed network design for the Bangladesh Computer Council building. It includes logical and physical diagrams of the proposed network layout, a list of required equipment and their costs, and a total projected budget of 5.3 million taka. The network aims to provide improved security, reliability, and fault tolerance across 8 floors of offices and various rooms through the use of switches, routers, servers, access points, and security cameras connected with CAT6 cables.
MTCNA Show.pptx
This document provides an overview of a MikrotikRouter OS training class. The class covers topics such as Mikrotik devices, configuring bridges and IP addresses, securing the router, backup and restore, traffic monitoring tools, logging, SNMP, DHCP, firewall filters, and VPN configuration including PPTP, L2TP, SSTP, and PPPOE tunnels. The objective is to provide hands-on training for installing, configuring, and troubleshooting Router OS functions.
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1) Describe NAT characteristics.
2) Describe the benefits and drawbacks of NAT.
3) Configure static NAT using the CLI.
4) Configure dynamic NAT using the CLI.
5) Configure PAT using the CLI.
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7) Configure NAT64.
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MikroTik Basic Training Class - Online Moduls - English
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Session 12 Tp 12
Security templates contain security settings that can be applied to machines. Common predefined templates include ones for domain controllers and workstations with different security levels. Templates can be created, modified, and imported. The security configuration and analysis tool compares template settings to machine configurations. Templates are deployed using group policy to apply settings to multiple machines. Testing security policies involves creating test plans, test cases, and a lab environment. Results are studied to determine policy suitability before full deployment, which starts with a limited pilot rollout.
Session 11 Tp 11
This document discusses designing a secure network infrastructure. It covers public key infrastructure using authentication and encryption with digital certificates. It also discusses updating networks using tools like the Baseline Security Analyzer and Software Update Services. Additionally, it outlines securing wireless networks through authentication methods and encryption, as well as remotely administering networks using tools like Remote Assistance and Remote Desktop.
Session 10 Tp 10
Public Key Infrastructure (PKI) uses public and private key cryptography to authenticate users and devices. Digital certificates, issued by a Certificate Authority (CA), bind a public key to a user's identity. Enterprise CAs issue certificates only to internal users while stand-alone CAs can issue to external users. Active Directory, a Windows directory service, enables single sign-on access to network resources and authenticates external users without an Active Directory account.
Session 9 Tp 9
This document discusses planning a secure Windows Server 2003 network. It covers selecting server and desktop computers, operating systems, and security features. Some key points include categorizing computers by role, standardizing hardware, selecting an operating system based on applications and costs, and configuring security permissions for files, folders, and the registry. Domain controllers require additional security as the failure of one could disrupt the whole network. The document also discusses infrastructure servers like DNS and DHCP and how to secure them.
Session 8 Tp 8
The document discusses maintaining server availability by monitoring performance, network services, and system bottlenecks. It also covers planning a backup strategy. Specifically, it outlines:
- Tools for analyzing server performance including the Performance Console and Network Monitor
- Services to monitor like DHCP, DNS, WINS, and routing/remote access
- Areas that could cause bottlenecks: processor, memory, storage, and network
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Session 7 Tp 7
Windows Server 2003 supports two types of clusters: server clusters and network load balancing (NLB) clusters. Server clusters provide high availability for applications like databases and messaging servers, connecting each node to shared storage. NLB clusters balance load for applications like web servers, assigning each node a cloned data set. Designing an effective cluster involves considering availability needs, scaling options, and using tools like the Network Load Balancing Manager and Cluster Administrator.
Session 4 Tp 4
DNS servers convert web addresses to IP addresses and vice versa. A DNS zone is a contiguous portion of the DNS namespace containing domains and subdomains. Resource records within zonal databases contain address mappings. Using multiple DNS servers improves performance and availability through load balancing and redundancy. Threats to DNS servers include flooding, request hijacking, and traffic interception. Security measures involve restricting dynamic updates, network interfaces, and zone transfers.
Session 3 Tp 3
DHCP automates the allocation of IP addresses, subnet masks, default gateways, and other network configuration parameters. It uses four messages - DHCPDISCOVER, DHCPOFFER, DHCPREQUEST, DHCPACK - to allocate addresses dynamically or statically. DHCP can be designed for LANs, routed networks, and non-Microsoft clients. It enhances availability through features like superscopes across multiple servers and Windows Server 2003 clustering. Security involves authorizing servers, controlling access, and using firewalls. Performance is increased by shortening response times, distributing load across servers, and optimizing lease times.
Session 1 Tp 1
This document discusses planning a network services infrastructure. It explains that an infrastructure consists of physical and logical elements and follows a plan-implement-maintain process. Key aspects covered include selecting protocols like TCP/IP, Ethernet, and DHCP/DNS for networking services. Design considerations involve goals like functionality, security, availability and performance. The document provides an overview of important network infrastructure concepts.
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