Linux Based Network Proposal
- 1. Linuxproject.comA Presentation and Demonstration
- 2. Members and their objectivesRobert Banning
- 3. DNS & DHCP (dnsmasq)
- 4. Chris Riccio
- 5. Apache , https (httpd) & E-Mail (postfix, dovecot, & squirrelmail)
- 6. Casey Adams
- 7. Shell scripts & SSH (sshd)
- 9. NFS (nfs) & FTP (vsftpd)
- 11. VNC & Samba (smb)Physical layout and ip addressing scheme
- 12. Dynamic Host Configuration Protocol (DHCP) TopicsDHCP definedHow DHCP worksConfiguration
- 13. DHCP Defined DHCP is a network application protocol used by devices that automatically assigns temporary IP addresses to client machines logging into an IP network. The IP addresses assigned to clients are unique but as devices leave and re-join the network the addresses are released and reused.
- 14. How DHCP Works
- 15. Domain Name System (DNS)TopicsDNS definedHow DNS worksConfiguration
- 16. DNS Defined DNS is the way that Internet domain names are located and translated into Internet Protocol addresses. DNS basically is a database that has a list of domain names with IP addresses. (example phone book)
- 17. How DNS Works Translates hostnames such as www.linuxproject.com into IP addresses which will allow the delivery of information from one computer to another. Without DNS the internet would not be possible unless you had the IP addresses for each link memorized. It also stores a listing of mail exchange servers which will allow e-mail to be possible.Important FilesResolv.confLocated in /etc directoryContains IPs of domain name serversNamed.confConfiguration file in BINDDefines the name server with name and ip address of the hosts
- 18. DnsmasqFirst Step: Check IP address in the resolv.conf file on your local name servernameserver 12.345.678.8 nameserver 12.345.678.9Second Step: On all local PC’s vim /etc/resolv.conf and type only thisnameserver 192.168.1.1Third Step: Vim /etc/hosts and enter your IP addresses and domain names127.0.0.1 localhost 192.168.0.1 server 192.168.0.2 server2 192.168.0.3 server3 192.168.0.4 fedora 192.168.0.5 windows 192.168.0.2 ftp 192.168.0.1 mailFourth Step: vim /etc/dnsmasq.conf un-comment the following lines and replace the stand in text with your own expand-hosts domain=test.net (use your domain name here)dhcp-range=192.168.0.4,192.168.0.10,168 (first three IP address .1,.2,.3 are statically assigned to servers)
- 20. Apache: Web ServerTopicsApache defined
- 21. How a web server (Apache) works
- 22. Web server securityApache: DefinedApache is a web server notable for playing a key role in the initial growth of the World Wide Web.
- 23. Apache is fast, secure, and infinitely customizable.
- 24. Since April of 1996, Apache has been the most popular HTTP server on the World Wide Web.How a web-server works…The browser broke the URL into three parts: The protocol ("http") The server name ("www.linuxproject.com") The file name (“index.php") The browser communicated with a name server to translate the server name "www.linuxproject.com" into an IP address, which it uses to connect to the server machine. The browser then formed a connection to the server at that IP address on port 80.
- 25. Apache Security-HTTPSHyper Text Transfer Protocol Secure is designed to create a secure connection over an unsecure networkHTTP over SSL (secure and encrypted)-htaccesshtaccess is designed for directory level access controlThis will prompt each user who access the website to enter their previously assigned credentialsE-MailWe implemented a simple web-based email GUI (graphical user interface) called squirrelmail
- 26. Very familiar to services such as Google’s Gmail or Microsoft's Live email
- 27. Each user can login from any machine on the LAN and access all of their email securely Shell ScriptTopicsShell Scripts DefinedPurpose of our Shell ScriptSecure Copy Shell Script
- 28. Shell Scripts DefinedA series of commands written in plain text file for a shell, or command line interpreter, of an operating system.
- 29. The Purpose of Our Shell ScriptCopy files from one server to the another server
- 30. Secure Password Shell Scriptscp /share/TITAN/* criccio@server2:/share/THEBES
- 31. Secure Shell (SSH)TOPICSSSH DefinedHow SSH Works
- 32. SSH DefinedSet of programs that use public/private key technology for authenticating and encrypting between user accounts on distributed hosts on the internet.
- 33. How SSH WorksClient connects to serverServer sends to client:Public Host KeyPublic Server KeyClient generates random 256 bit key and encrypts it with both public host and server keyClient sends it back to serverServer decrypts with own private host and server key
- 34. FTP & NFS
- 35. FTP FTP is based on the client-server model of communication between computers: one computer runs a server program that makes information available to other computers.
- 36. The other computers run client programs that request information and receive replies from the server.
- 37. To access an FTP server, users must be able to connect to the Internet or an intranet (via a modem or local area network) with an FTP client program.NFSThe Network File System (NFS) software allows one computer (an NFS client) attached to a network to access the files on the hard disk of another computer on the same network.
- 38. An NFS client can mount the whole or part of a remote file system. It can then access the files in this file system almost as if they were present on a local hard disk. The main differences between FTP and NFS are:FTP uses actual file transfers having users upload and download them.NFS is actual real-time file sharing between workstations within a networkFTP vs. NFS
- 40. Samba
- 41. S M BSMB, (Service Message Block), is a protocol, as well as a suite of programs that allow Linux servers to share files, printers, and other resources with Window clients. Samba is also open source software, and a safe way to share files over an secured / secured internet.
- 42. SambaAnother benefit Samba gives us is the ability to act as an interface. A graphical interface to access files, folders.. etc, without having to go through the command line.
- 43. VNCWhat is VNC? VNC is stands for Virtual Network Computing.It is a graphical desktop sharing system, used to control another computer over the network via remote access.
- 44. VNCVNC is platform independent. Meaning, it will work with most operating systems. In the case of Microsoft, a proprietary operating system, the use of the RFB Protocol, or {remote frame-buffer} allows VNC to work with all windows systems, applications, and MAC operating systems.
- 45. Thank You