Introduction to Networking: History , TCP/IP Networks- Introduction to TCP/IP Networks, Ethernets, Other Types of Hardware, The Internet Protocol, IP Over Serial Lines, The Transmission Control Protocol, The User Datagram Protocol, More on Ports, The Socket Library, UUCP Network ,Linux Networking, Different Streaks of Development, Where to Get the Code, Maintaining Your System, System Security

UNIT:II Issues of TCP/IP Networking:Networking Interfaces, IP Addresses, Address Resolution, IP Routing, IP Networks, Subnetworks, Gateways, The Routing Table, Metric Values, The Internet Control Message Protocol, Resolving Host Names.

Configuring the Networking Hardware: Kernel Configuration, Kernel Options in Linux 2.0 and Higher, Ethernet Installation, Ethernet Autoprobing, The PLIP Driver, The PPP and SLIP Drivers, Other Network Types. Configuring TCP/IP Networking: Mounting the /proc Filesystem, Installing the Binaries, Setting the Hostname, Assigning IP Addresses, Creating Subnets, Writing hosts and networks Files, Interface Configuration for IP, The Loopback Interface, Ethernet Interfaces, Routing Through a Gateway, Configuring a Gateway.

The Resolver Library, The host.conf File, Resolver environment variables, The nsswitch.conf File, Configuring Name Server Lookups Using resolv.conf, Resolver Robustness, How DNS Works, Name Lookups with DNS, Types of Name Servers

Methods of Attack, What Is a Firewall?, What Is IP Filtering?, Setting Up Linux for Firewalling, Kernel Configured with IP Firewall, The ipfwadm Utility, The ipchains Utility, The iptables Utility, Three Ways We Can Do Filtering. IP Accounting:Configuring the Kernel for IP Accounting, Configuring IP Accounting, Accounting by Address. Electronic Mail: What Is a Mail Message?, How Is Mail Delivered?, Email Addresses, Obsolete Mail Formats, Mixing Different Mail Formats Sendmail:Introduction to sendmail, Installing sendmail, Overview of Configuration Files, The sendmail.cf and sendmail.mc Files.