Lesson 5
Dates: 6/12/2017
Linux networking
Linux System Administration
Link Layer Protocols
Provides Datagram (data) delivery between hosts physically connected via cables, hubs and switches (physical layer components).
Ethernet protocol.
Packet collisions.
Ethernet packet (simplified):
Header
Data Field (IP protocol data)
CRC
The header
(14 b): MAC addresses of the destination and source; type field for the network layer.
MAC address
(6 bytes):
00:60:08
:CA:39:C3
the first 3 bytes identify the vendor
Address Resolution Protocol (ARP)
: relates IP to MAC for the local hosts :
/usr/sbin/arp -a ? (192.168.5.240) at 08:00:20:1A:FD:43 [ether] on eth0
Computers on a Network
TCP/IP protocol
OSI model
TCP/IP stack and Kernel
Packet Encapsulation
Link Layer Protocol
(Exercise)NIC naming
(Exercises) Link Layer Protocol
Network Layer Protocol
Subnet Mask
Network/Subnet splitting
Subnet Calculation
(Exercises) ipcalc
Packet Routing
Non-routable subnets and NAT
The loopback device
Transport Layer Protocols
TCP and UDP ports
Linux Network Settings
(Exercises) NIC name setting
(Exercises) Linux Network Settings
Hosts communication via TCP/IP
(Exercises) ICMP protocol
IPv6
IPv6 transition
Network Applications
Name Resolution
(Exercises) network services
(Exercises) Bridged network config
References
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