Novell LINUX ENTERPRISE DESKTOP 10 SP2 - DEPLOYMENT GUIDE 08-05-2008 Deployment Manual page 392

Network
ping [options] hostname or IP address
The ping command is the standard tool for testing the basic functionality of TCP/IP
networks. It sends a small data packet to the destination host, requesting an imme-
diate reply. If this works, ping displays a message to that effect, which indicates
that the network link is basically functioning.
-c number
-f
-i value
nslookup
The domain name system resolves domain names to IP addresses. With this tool,
send queries to name servers (DNS servers).
telnet [options] hostname or IP address [port]
Telnet is actually an Internet protocol that enables you to work on remote hosts
across a network. telnet is also the name of a Linux program that uses this protocol
to enable operations on remote computers.
WARNING
Do not use telnet over a network on which third parties can "eavesdrop."
Particularly on the Internet, use encrypted transfer methods, such as ssh,
to avoid the risk of malicious misuse of a password (see the man page for
ssh).
376 Deployment Guide
Determines the total number of packages to send and ends after they have been
dispatched (by default, there is no limitation set)
flood ping: sends as many data packages as possible; a popular means, reserved
for root, to test networks
Specifies the interval between two data packages in seconds (default: one
second)