Unix Network Commands Flashcards
arp
address resolution protocol used to display and control mac address to IP address
What does “arp -a “ does?
displays current options
What does “arp -n” does?
displays iP as numbers instead of symbols
What does “arp -i” does?
specifies that the arp command should be limited to the interface
What does “arp -d” does?
deletes entry
What does “arp -s” does?
added entry
What does “arp -s tmp “ does?
makes the entry temporary
What does “arp -s reject” does?
traffic to the destination specified will be rejected. sender will be notified
What does “arp -s blackhole” does?
traffic to the destination specified will be rejected. sender will not be notified.
dig
used to resolve FQDN to Ip address
host
used to resolve FQDN to IP and IP to FQDN
ifconfig
display host configuration about those interfaces. This could also update the configuration
traceroute
prints out the route packets trace to network host
netstat
display various information about current connections
What does “netstat -a “ does?
displays all host active Ip-based sessions
What does “netstat - b “ does?
shows the names of the programs
What does “netstat -r” does?
shows the routing table
What does “netstat -s” does?
shows the statics
ping
used to test network reachability
what does “ping -c” does?
the number of pings to send
what does “ping -d” does?
don’t fragment bit
what does “ping -s” does?
let you pick which host to send from if machine has more than one host.
whois
search the directory service for information about a client
iptables
used to set up and maintain and inspect packed used to filter traffic for ip4/6
what does iptables -a mean?
add a rule
what does iptables -c mean?
mean to check a rule
what does iptables -j mean?
tell what to do if a packet match
what does iptables -d mean?
delete a rule
What are the 3 chains in IPtable
INPUT, OUTPUT, FOWARd
tcpdump
dumps network traffic.
