MCSE : Security Specialist
ping
Is
command, which forwards a packet to a URL over the Internet or
within an Intranet. This verifies that TCP/IP is configured
correctly and that a connection can be made.
The
basic ping command syntax is "ping hostname".
Ping
127.0.0.1 This is the loopback address and verifies that the
computer that you are pinging from can communicate via TCP/IP with
its own ethernet adapter.
arp
Address Resolution Protocol, a TCP/IP protocol used to convert an IP
address into a physical address (called a DLC address), such as an
Ethernet address. A host wishing to obtain a physical address
broadcasts an ARP request onto the TCP/IP network. The host on the
network that has the IP address in the request then replies with its
physical hardware address.
There
is also Reverse ARP (RARP) which can be used by a host to discover
its IP address. In this case, the host broadcasts its physical
address and a RARP server replies with the host's IP address.
ARP
Syntax:
-
-a or arp -g Both of these commands do the same thing. They
display the contents of your current arp cache.
-
-s (IP address hardware address) This commands a static entry to
the arp cache.
-
-d (IP address) Removes and entry from the arp cache.
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