Linux Network Management

Names

dnsdomainname
Show the systems DNS domain name

domainname
Show or set the systems domain name

hostname
Used to show or set the name of your machine for networking

nisdomainname
Show or set systems NIS/YP domain name

nodename
Show or set the systems DECnet node name

ypdomainname
Show or set the system’s NIS/YP domain name

Network setup and commands

arp
This program lets the user read or modify their arp cache.

dig(1)
Send domain name query packets to name servers for debugging or testing.

finger
Display information about the system users.

ftp
File transfer program.

ifconfig
Configure a network interface.

ifdown
Shutdown a network interface.

ifup
Brings a network interface up. Ex: ifup eth0

ipchains
IP firewall administration used to set input, forward, and output rules.

netconf
A GUI interactive program to let you configure a network on Redhat systems.

netconfig
Another GUI step by step network configuration program.

netstat
Displays information about the systems network connections, including port connections, routing tables, and more. The command “netstar -r” will display the routing table.

nslookup
Used to query DNS servers for information about hosts.

pftp
Same as ftp.

ping
Send ICMP ECHO_REQUEST packets to network hosts.

portmap
DARPA port to RPC program number mapper. Must be running to make RPC calls.

rarp
Manipulate the system’s RARP table.

rcp
Remote file copy. Copies files between two machines.

rexec
Remote execution client for an exec server. The host uses the rexecd server.

ripquery
Query RIP gateways. Request all routes known by an RIP gateway by sending an RIP request.

rlogin
Starts a terminal session on a remote host.

route
Show or manipulate the IP routing table.

rsh
Executes command on remote host.

rup
Displays summary of current system status of a remote host or all hosts on the network.

ruptime
Show host status of local machines.

rwhod
System status server, maintains database used by rwho and ruptime.

showmount
Show mount information for an NFS server.

tcpd
Access control facility for internet services. Can be set up to monitor requests for Telnet, finger, ftp, exec, rsh, rlogin, tftp, talk, comsat. It filters access for these requests.

tcpdchk
Tcp wrapper configuration checker.

tcpdump
Dump traffic on a network. Prints out headers of packets that match the boolean expression.

tcpdmatch
Predicts how the tcp wrapper will handle a specific request for a service.

Telnet
User interface to the TELNET protocol, setting up a remote console session.

traceroute
Print the route that packets take to the specified network host.

ipx_configure
Tool to setup Netware access.

ncpmount
Netware filesystem mounting program.

nprint
Novell print command.

pqlist
Netware printer list for a given server.

pserver
Netware print server.

slist
Netware server list.

Communications commands (includes mail)

biff
Notifies the system if mail arrives and who it is from.

comsat
Biff server to receive reports of incoming mail.

expire
Used to purge old news articles.

elm
Electronic mail.

ftp
File transfer protocol.

mailx
Berkley mail program.

metasend
Interface for sending non-text mail.

nn
Net news.

pine
Program for internet news and e-mail, Can send documents, graphics, local & remote messages.

sendmail
A popular Unix, Linux mail message transfer agent.

smail
A popular mail message transfer agent which is easier to set up than sendmail.

talk
Lets two parties talk simultaneously.

telnet
Allows a user to have a login session across a network on a remote host.

tin
Net news reader.

write
Allows users to directly interact with other users via terminal number (one way at a time).