You can use any port here. Flood mode. You can also use -a or —spoof to hide hostnames. See MAN page below.
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Using hping3 you are able to perform at least the following stuff: - Test firewall rules - Advanced port scanning - Test net performance using different protocols, packet size, TOS type of service and fragmentation. Development is open so you can send me patches, suggestion and affronts without inhibitions.
The default is to wait one second between each packet. Using hping3 to transfer files tune this option is really important in order to increase transfer rate. Hping will send 10 packets for second.
Faster then --fast ; but not as fast as your computer can send packets due to the signal-driven design. This is ways faster than to specify the -i u0 option. Nothing is displayed except the summary lines at startup time and when finished. In other systems or when there is no default route hping3 uses the first non-loopback interface.
However you are able to force hping3 to use the interface you need using this option. If no interfaces match hping3 will try to use lo. When debug mode is enabled you will get more information about interface detection, data link layer access, interface settings, options parsing, fragmentation, HCMP protocol and other stuff.
Moreover a tcp null-flag to port 0 has a good probability of not being logged. UDP header tunable options are the following: --baseport, --destport, --keep. The only real difference is that the standard hping behaviors are encapsulated into a scanning algorithm. Tech note: The scan mode uses a two-processes design, with shared memory for synchronization. The scanning algorithm is still not optimal, but already quite fast. Sometimes they shows interesting details.
Ip Related Options -a --spoof hostname Use this option in order to set a fake IP source address, this option ensures that target will not gain your real address. You need to specify a numerical IP address as target host like All the occurrences of x will be replaced with a random number in the range If you are not sure about what kind of addresses your rule is generating try to use the --debug switch to display every new destination address generated.
When this option is turned on, matching packets will be accept from all the destinations. See relid. Note that the IP header is only large enough for nine such routes. Many hosts ignore or discard this option. Also note that using hping you are able to use record route even if target host filter ICMP. It starts with a base source port number, and increase this number for each packet sent. When packet is received sequence number can be computed as replies. Default base source port is random, using this option you are able to set different number.
If you need that source port not be increased for each sent packet use the -k --keep option. Default is This can be useful when you need to analyze whether TCP sequence number is predictable.
ping(8) - Linux man page
Show version and exit. In this case ping does not stop after count packet are sent, it waits either for deadline expire or until count probes are answered or for some error notification from network. The option affects only timeout in absense of any responses, otherwise ping waits for two RTTs. When using ping for fault isolation, it should first be run on the local host, to verify that the local network interface is up and running. Round-trip times and packet loss statistics are computed. When the specified number of packets have been sent and received or if the program is terminated with a SIGINT, a brief summary is displayed.
Show an help screen on standard output, so you can pipe to less. The default is to wait one second between each packet. Using hping2 to transfer files tune this option is really important in order to increase transfer rate. Hping will send 10 packets for second. Nothing is displayed except the summary lines at startup time and when finished. In other systems or when there is no default route hping2 uses the first non-loopback interface. However you are able to force hping2 to use the interface you need using this option.