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CBT 35 Common Network tools
ping, netstat, etc.
10
Computer Science
Professional
07/29/2011

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Term
what does ping do
Definition
sends ICMP echo-requests
expects to receive ICMP echo-replies
Term
What is up with 127.0.0.0/8
Definition
is fully reserved to the local loopback adapter
Term
netstat return all tcp listeners
Definition
netstat -ntl
Term
check if ssh is working on a remote system
Definition
telnet 192.168.30.195 22
Term
What is telnet good for
Definition
checking if ports are working on remote machines
Term
look at all the protocols and sockets currently in use
Definition
netstat -a
Term
return all UDP listeners
Definition
netstat -nulp
Term
show established connections
Definition
netstat -ntp
returns established connections (sockets)
Term
show established ssh connections
Definition
netstat -ntp | grep 22
Term
What does ARP do
Definition
resolves layer 2 MAC addresses to Layer 3 IP addresses
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