hping2

Description

Use the hping2 command to send and analyze TCP, UDP, ICMP, and RAW-IP packets to a specified host.

Syntax

hping2 <hping2 options> <destination>

Arguments

 

<hping2 options>	Specifies the type of hping2. Select one of the following options:   • -h --help Show this help. • -v --version Show version. • -c --count Packet count. • -i --interval wait (uX for X microseconds, for example -i u1000). --fast Alias for -i u10000 (10 packets for second). • -n --numeric Numeric output. • -q --quiet Quiet. • -I --interface Interface name (otherwise default routing interface). • -V --verbose Verbose mode. • -D --debug Debugging info. • -z --bind Bind CTRL+z to ttl (default to destination port). • -Z --unbind Unbind CTRL+z
	MODE Default mode = TCP • -0 --rawip RAW IP mode. • -1 --icmp ICMP mode. • -2 --udp UDP mode. • -8 --scan SCAN mode. Example: hping --scan 1-30,70-90 -S www.target.host • -9 --listen Listen mode.
	IP • -a --spoof Spoof source address. --rand-dest Random destionation address mode. see the man. --rand-source Random source address mode. see the man. • -t --ttl ttl (default 64). • -N --id id (default random). • -W --winid Use win* id byte ordering. • -r --rel Relativize id field (to estimate host traffic). • -f --frag Split packets in more frag. (may pass weak acl). • -x --morefrag Set more fragments flag. • -y --dontfrag Set don’t fragment flag. • -g --fragoff Set the fragment offset. • -m --mtu Set virtual mtu, implies --frag if packet size > mtu. • -o --tos Type of service (default 0x00), try --tos help • -G --rroute Includes RECORD_ROUTE option and displaysthe route buffer. --lsrr Loose source routing and record route. --ssrr Strict source routing and record route. • -H --ipproto Set the IP protocol field, only in RAW IP mode.
	ICMP • -C --icmptype icmp type (default echo request). • -K --icmpcode icmp code (default 0). --force-icmp Send all ICMP types (default send only supported types). --icmp-gw Set gateway address for ICMP redirect (default 0.0.0.0). --icmp-ts Alias for --icmp --icmptype 13 (ICMP timestamp). --icmp-addr Alias for --icmp --icmptype 17 (ICMP address subnet mask). --icmp-help Display help for others icmp options.
	UDP/TCP • -s --baseport Base source port (default random). • -p --destport [+][+]<port> destination port(default 0) CTRL+z. inc/dec. • -k --keep Keep still source port. • -w --win winsize (default 64). • -O --tcpoff Set fake tcp data offset (instead of tcphdrlen / 4). • -Q --seqnum Shows only TCP sequence number. • -b --badcksum (Try to) send packets with a bad IP checksum many systems will fix the IP checksum sending the packet so you'll get bad UDP/TCP checksum instead. • -M --setseq Set TCP sequence number. • -L --setack Set TCP ack. • -F --fin Set FIN flag. • -S --syn Set SYN flag. • -R --rst Set RST flag. • -P --push Set PUSH flag. • -A --ack Set ACK flag. • -U --urg Set URG flag. • -X --xmas Set X unused flag (0x40). • -Y --ymas Set Y unused flag (0x80). --tcpexitcode Use last tcp->th_flags as exit code. --tcp-timestamp Enable the TCP timestamp option to guess the HZ/uptime.
	Common • -d --data data size (default is 0) • -E --file data from file • -e --sign add 'signature' • -j --dump dump packets in hex • -J --print dump printable characters • -B --safe enable 'safe' protocol • -u --end tell you when --file reached EOF and prevent rewind • -T --traceroute traceroute mode (implies --bind and --ttl 1) --tr-stop Exit when receive the first not ICMP in traceroute mode --tr-keep-ttl Keep the source TTL fixed, useful to monitor just one hop --tr-no-rtt Don't calculate/show RTT information in traceroute mode
	ARS packet description (new, unstable) • --apd-send Send the packet described with APD (see docs/APD.txt)
<destination>	Specifies the IP address of the destination that you are pinging.

Defaults

The default mode is TCP.

Command Mode

User EXEC Mode

Privileged EXEC Mode

Global Configuration Mode

See Also

See the following related commands:

n

“mtr”

n

“ping”

n

“tcpdump”

n	“tcptraceroute”

n	“traceroute”.

Usage Guidelines

n	hping2 is a command-line oriented TCP/IP packet assembler/analyzer.

n	The interface is inspired by the ping unix command, but hping2 isn’t limited to sending ICMP echo requests. It supports TCP, UDP, ICMP, and RAW-IP protocols, and has a traceroute mode.

Examples

None.

Please send comments or suggestions regarding user documentation to techpubs@silver-peak.com.