• Sites
• protocol
• packet switching
• TCP/IP
  • datagram / packet
  • remote login
  • x window
  • NFS(Network File System)
• Ethernets
  • 10base-2, 10base-5, 100base-T
    • -2/-5: 200/500 meters
    • -T: twisted pair
    • base: baseband modulation
    • 10: 10 Mb/s
  • NIC(Network Interface Card)
  • frame
• X.25
• Frame Relay
• ATM(Asynchronous Transfer Mode)
• Q.S.(Quality of Service)
• gateway
• internetworking
  • "meta-network": internet
  • internet != Internet
• dotted decimal notation(dotted quad notation)
  • 127.0.0.1
• hostname resolution
  • hostnames to IP
• address resolution
  • IP to hardware addresses
• SLIP, CSLIP(Compressed SLIP, Serial Line IP)
• PLIP(Parallel Line IP)
• IPX
• PPP(Point-to-Point Protocol)
• IP(Internet Protocol)
• TCP(Transmission Control Protocol)
• UDP(User Datagram Protocol)
• UUCP(Unix-to-Unix Copy)
  • batch
• Linux Networking
• "least privilege"
• prevent intruders
  • tripwire

Issues of TCP/IP Networking

• MTU(Maximum Transfer Unit)
• NIC(Network Information Center)
• NIC(Network Interface Card/Controller)
• 0.0.0.0
  • default route
• 127.0.0.0
  • loopback address
• IP Address Ranges Reserved for Private Use

Class	Networks
A	10.0.0.0 through 10.255.255.255
B	172.16.0.0 through 172.31.0.0
C	192.168.0.0 through 192.168.255.0

• ARP(Address Resolution Protocol)
  • broadcasting
• RARP(Reverse Address Resolution Protocol)
• autonomous systems
• subnetworks
  • subnets