Network Fundamentals

Slide bài giảng CCNA1 dùng trong các học viện mạng Cisco

377p phutran76 03-05-2012 103 28   Download

Lecture Electronic commerce - Chapter 9: Mobile Computing and Commerce and Pervasive learning objectives: Describe the mobile computing environment that supports m-commerce (devices, software, services). Describe the four major types of wireless telecommunications networks. Define mobile commerce and understand its relationship to e-commerce. Discuss the value-added attributes, benefits, and fundamental drivers of m-commerce. Discuss m-commerce applications in finance, shopping, advertising, and provision of content. Describe the application of m-commerce within organizations.

53p caphesuadathemtac 09-11-2021 21 3   Download

This paper intends to present the System Dynamics (SD) as a novel method to simulate the thrust force developed during drilling of GFRP composites. Good quality holes are extremely fundamental so as to accomplish equally good joints amid creation of components prepared from composite for better execution.

9p lucastanguyen 01-06-2020 12 3   Download

Choose the best answer for each question. 1) As a system administrator, you are instructed to backup all the users’ home directories. Which of the following commands would accomplish this? a) tar xvf usersbackup.tar /home/ b) tar cvf usersbackup.tar /home/ c) tar cvf usersbackup.tar /home/usr/

5p anhchangxuixeo1002 14-03-2013 75 7   Download

This Code, consisting of 24 imperatives formulated as statements of personal responsibility, identifies the elements of such a commitment. It contains many, but not all, issues professionals are likely to face. Section 1 outlines fundamental ethical considerations Section 2 addresses additional, more specific considerations of professional conduct. Section 3 pertain more specifically to individuals who have a leadership role, whether in the workplace or in a volunteer capacity such as with organizations like ACM. Section 4 addresses principles involving compliance with this Code ...

10p muathu_102 28-01-2013 59 2   Download

Protocols for wireless applications Wireless data networks present a more constrained communication environment compared to wired networks. Because of fundamental limitations of power, available spectrum, and mobility, wireless data networks tend to have less bandwidth than traditional networks, more latency than traditional networks, less connection stability than other network technologies, and less predictable availability.

19p huggoo 20-08-2010 86 8   Download

Personal and desktop firewalls are frequently overlooked as security devices that should be implemented on a network.

2p chutieuchuathieulam 23-07-2010 77 6   Download

The closer you come to the resource that needs to be protected, the more intelligent and specific you can get in filtering traffic directed at that resource.

1p chutieuchuathieulam 23-07-2010 73 6   Download

Virtual private networks (VPNs) are another feature that firewalls have quickly adopted. Firewalls, by the very nature of their placement in the network design, represent a natural device to provide termination for LAN-to-LAN and in some cases remote-access VPNs.

5p chutieuchuathieulam 23-07-2010 146 15   Download

Using Firewalls to Segment Internal Resources Perhaps the most overlooked implementation of a firewall is on the internal network.

4p chutieuchuathieulam 23-07-2010 75 6   Download

To paraphrase Shrek, the network perimeter is like an onion; it has lots of layers.

4p chutieuchuathieulam 23-07-2010 90 10   Download

Protocols, Services, and Applications As mentioned, TCP/IP provides a mechanism to allow systems to communicate with each other across a network.

10p chutieuchuathieulam 23-07-2010 77 9   Download

As with configuring any firewall, administrators should develop a checklist that they can use during the installation and implementation of the PIX/ASA firewall in the network

2p chutieuchuathieulam 23-07-2010 81 12   Download

NAT was developed to address a couple of concerns. First, the number of public IP addresses available on the Internet was becoming depleted

4p chutieuchuathieulam 23-07-2010 128 31   Download

NetFilter Checklist Building a NetFilterbased firewall is not difficult. End users interested in setting up their own NetFilter firewall can use the system to be used as the firewall. Install additional network interfaces (minimum number of required interfaces is two)

2p chutieuchuathieulam 23-07-2010 89 10   Download

Management Access Control of access to the management interface of network infrastructure devices is critical. Network devices such as routers, switches, intrusion detection sensors

3p chutieuchuathieulam 23-07-2010 92 12   Download

As with any device on the network, firewalls run software (whether it is embedded in an application-specific integrated circuit [ASIC] or runs from Flash memory or runs from a disk file system) to be able to perform their functions.

2p chutieuchuathieulam 23-07-2010 71 5   Download

Most Linksys routers have an extremely small requirements list. Because the assumption is that the router will be connected to a small or home network that lacks any kind of DHCP server

1p chutieuchuathieulam 23-07-2010 76 7   Download

Step 1. Step 2. Obtain the connection information required by your ISP. Plug the router into the service provider device or network jack using the external/WAN interface of the router

1p chutieuchuathieulam 23-07-2010 87 5   Download

Because network traffic must cross the firewall to reach the end systems, the firewall has also become a point where the inspection of this traffic is appropriate.

2p chutieuchuathieulam 23-07-2010 123 7   Download