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Active In SP

Posts: 5,361
Joined: Feb 2011
24-02-2011, 11:16 AM

Naushad Sultan Talukdar

.pptx   NETWORK CONFIGURATION.pptx (Size: 351.33 KB / Downloads: 29)
Required Information
1.Determine the machines IP address.
2. Network mask. This determines which portion of the IP address specifies the subnetwork number and which portion specifies the host. Class C (most networks)
Class B
3. Network address : which is IP address bit wise anded with the network mask.Ex: IP: Addr::
4. Broadcast address. Used to broadcast packets to every machine on a subnet. Ex: IP: Addr:
5. Gateway address. The address of the machine that is your gateway to the outside world.
In many cases: Ex: IP: Gateway:
6. Nameserver address. Translates host names into IP addresses.
Configuration tools
Netconf: A GUI interactive interface available on Red hat 6.1
netconfig: A GUI step by step interface
ifconfig: A text based program to configure the network interface.
Network file
/etc/sysconfig/network - Defines network and some of its characteristics.
/etc/HOSTNAME - Shows the host name of this host. If name is "myhost" then that is exactly the text this file will contain.
/etc/resolv.conf - Specifies the domain to be searched for host names to connect to the nameserver address and the search order for the nameservers.
/etc/host.conf - Specifies the order nameservice looks to resolve names./etc/hosts - Shows addresses and names of local hosts.
etc/networks - Provides a database of network names with network addresses similar to the /etc/hosts file.
/etc/sysconfig/network-scripts/ifcfg-eth* - There is a file for each network interface. This file contains the IP address of the interface and many other setup variables.
Analysis Tools
netstat - Displays information about the systems network connections, including port connections, routing tables, and more. The command "netstar -r" will display the routing table.
traceroute - This command can be used to determine the network route from a computer to some other computer on a network or the internet. To use it can type "route IPaddress" of the computer.
nslookup - Used to query DNS servers for information about hosts.
tcpdump - This program allows the user to see TCP traffic on their network.
Manual Configuration
To use networking on any permanent basis
1.setup the file /etc/sysconfig/network
2.Assign an ip address with "ifconfig eth0 netmask up".
3.Tell machine that a hub is ready for information with the command "route add -net netmask eth0“.

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