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Elements of Unix/System/Network Administration

Elements of Unix/System/Network Administration. Machine/Unit/Computer/Platform Itself Console - video/keyboard/mouse Disk, RAM, Firmware, Network Interface(s) Backup mechanism Physical Location MAC (Move/Add/Change) Secure/Unsecure location Power UPS, Generator.

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Elements of Unix/System/Network Administration

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  1. Elements of Unix/System/Network Administration Machine/Unit/Computer/Platform Itself Console - video/keyboard/mouse Disk, RAM, Firmware, Network Interface(s) Backup mechanism Physical Location MAC (Move/Add/Change) Secure/Unsecure location Power UPS, Generator

  2. Elements of Unix/System/Network Administration, con't. Users Userid (UID) Groupid (GID) Username/Password Home directory Startup scripts Shell E-mail account Access MAC (Move/Add/Change)

  3. Elements of Unix/System/Network Administration, con't. Filesystems Extensions of local disk, network shared NFS (Network File System) Samba (System Message Block, SMB, netbios) Disks Partition(s) RAID (Redundant Array of Inexpensive Disks) Backup Quotas Virus Scan Owners/Users

  4. Elements of Unix/System/Network Administration, con't. Printers and Print Services Direct attached printers (not normally done) Network attached printers Print servers (lpd. Line Printer Daemon) Print queues

  5. Elements of Unix/System/Network Administration, con't. System Processes (daemons) What to run? Security issues Tftp (Trivial File Transfer Protocol) Sendmail Resource issues (memory, disk, other) Nfsd (Network File System Daemon) Httpd (Web server daemon) /etc/services /etc/inetd.conf

  6. Elements of Unix/System/Network Administration, con't. Network Hardware - NIC card - 10BaseT, 100BaseT, FDDI, ATM, gigabit ethernet, Arcnet, FORIL Protocol(s) - TCP/IP, XNS, IPX, DecNet, SMB (netbios), AppleTalk Internet Connection(s) Security issues Firewalls

  7. UNIX Password Files /etc/passwd - read by everyone rw-|r--|r-- ooo|ggg|www; o=owner, g=group, w=world username:encryted_password:UID:GID:GECOS:home_directory:login_shell See pages 80-81 of text /etc/shadow r--|---|--- See page 82 of text

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