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-application specific addresses to which packets are directed on a receiving machines
-Channel is a better name
0-1023 'The Well Known Ports' |
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Share resources with client machines and other servers.
-Can also be a computer that performs server functions for another computer |
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Can be built from commodity computer components for low-load and non critical applications
-Specialized hardware used for dedicated high-load, mission critical applications |
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Specialized operating systems designed specifically for server usage
-Typically Unix or Linux
-Command line, not GUI normally |
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| Application, proxy, file , ftp, email, networking, web |
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Provide specific application services to an application
ex: |
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| Works as an intermediary between a workstation user and the internet. |
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| Public drive usually, responsible for the central storage and mgmt of data files so that other computers on the same network can access the files. |
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| Allows you to transfer files over the server or the internet |
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| Provide email storage and interconnections services to client computers. |
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-Encryption/decryption and other security services (VPN)
-Automatic assignment of IP addresses (DHCP) |
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| Responsible for accepting HTTP requests and provide responses in the form of images, videos, websites, etc |
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Microsoft Internet Info Services
-2nd Most Popular web server
-Integrated with Microsoft Server 2008 |
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-Most popular web server
-1st version written by Robert McCool in 95
-Available for most operating systems
-Maintained by Apache Software Foundation |
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- stores user account info, authenticates users, enforces the security.
-Maintains Directory service |
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| binary programs and all the commands for linux |
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| contains status files of the boot loader and kernel. for booting up the machine |
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| contains all of the user's home directories and preference sfor the interface options |
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| contains shared files needed to run the applications on your systems |
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| if a file becomes corrupted it moves it to this folder. you can check it for a missing file, something u need to fix, etc. |
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| mounting location for devices. |
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| contains software that is in addition to your server software |
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| loaded in memory while machine is running. kernel and system config |
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| home directory for the root user |
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| has temp files that are in use |
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| files shared between the users |
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| give syou the full location of an object/document/page |
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| Used when you have a visitor on your site and you want to send them to another resource on your side (image, etc) |
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Document Relative
Root Relative |
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File Transfer Protocol
-used to transfer data from one computer to another through a network
-uses 2 ports for communication
- port 20 for data transfers
- port21 for control/commands |
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Definition
1. using client FTP softare connects to ftp server
2. ftp daemon on server asks for an account number (username) and pw
3. command link is opened between the computer and the server
4.When a command is issued to dl a file the client software opens a second connection called the data link
5. File is dl and the data link is closed. |
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| Bullet Proof FTP, cuteFTP, CyberDuck, FileZilla, Fugu |
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SSH FTP or Secure FTP
- is not FTP over SSH but it is an entirely different protocol. |
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