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IPTEST(1)                   General Commands Manual                  IPTEST(1)



NAME
       iptest - automatically generate packets to test IP functionality

SYNOPSIS
       iptest [ -1234567 ] [ -d <device> ] [ -g <gateway> ] [ -m <MTU> ] [ -p
       <pointtest> ] [ -s <source> ] <destination>

DESCRIPTION
       iptest ...

OPTIONS
       -1     Run IP test group #1.  This group of tests generates packets
              with the IP header fields set to invalid values given other
              packet characteristics.  The point tests are: 1 (ip_hl <
              ip_len), 2 (ip_hl > ip_len), 3 (ip_v < 4), 4 (ip_v > 4), 5
              (ip_len < packetsize, long packets), 6 (ip_len > packet size,
              short packets), 7 (Zero length fragments), 8 (packet > 64k after
              reassembly), 9 (IP offset with MSB set), 10 (ttl variations).

       -2     Run IP test group #2.  This group of tests generates packets
              with the IP options constructed with invalid values given other
              packet characteristics.  The point tests are: 1 (option length >
              packet length), 2 (option length = 0).

       -3     Run IP test group #3.  This group of tests generates packets
              with the ICMP header fields set to non-standard values.  The
              point tests are: 1 (ICMP types 0-31 & 255), 2 (type 3 & code 0 -
              31), 3 (type 4 & code 0, 127, 128, 255), 4 (type 5 & code 0,
              127, 128, 255), 5 (types 8-10,13-18 with codes 0, 127, 128 and
              255), 6 (type 12 & code 0, 127, 128, 129, 255) and 7 (type 3 &
              codes 9-10, 13-14 and 17-18 - shortened packets).

       -4     Run IP test group #4.  This group of tests generates packets
              with the UDP header fields set to non-standard values.  The
              point tests are: 1 (UDP length > packet size), 2 (UDP length <
              packetsize), 3 (sport = 0, 1, 32767, 32768, 65535), 4 (dport =
              0, 1, 32767, 32768, 65535) and 5 (sizeof(struct ip) <= MTU <=
              sizeof(struct udphdr) + sizeof(struct ip)).

       -5     Run IP test group #5.  This group of tests generates packets
              with the TCP header fields set to non-standard values.  The
              point tests are: 1 (TCP flags variations, all combinations), 2
              (seq = 0, 0x7fffffff, 0x8000000, 0xa0000000, 0xffffffff),  3
              (ack = 0, 0x7fffffff, 0x8000000, 0xa0000000, 0xffffffff), 4 (SYN
              packet with window of 0, 32768, 65535), 5 (set urgent pointer to
              1, 0x7fff, 0x8000, 0xffff), 6 (data offset), 7 (sport = 0, 1,
              32767, 32768, 65535) and 8 (dport = 0, 1, 32767, 32768, 65535).

       -6     Run IP test group #6.  This test generates a large number of
              fragments in an attempt to exhaust the network buffers used for
              holding packets for later reassembly.  WARNING: this may crash
              or cause serious performance degradation to the target host.

       -7     Run IP test group #7.  This test generates 1024 random IP
              packets with only the IP version, checksum, length and IP offset
              field correct.

       -d <interface>
              Set the interface name to be the name supplied.

       -g <gateway>
              Specify the hostname of the gateway through which to route
              packets.  This is required whenever the destination host isn't
              directly attached to the same network as the host from which
              you're sending.

       -m <MTU>
              Specify the MTU to be used when sending out packets.  This
              option allows you to set a fake MTU, allowing the simulation of
              network interfaces with small MTU's without setting them so.

       -p <test>
              Run a...

SEE ALSO
       ipresend(1), ipsend(1), bpf(4), ipsend(5)

DIAGNOSTICS
       Only one of the numeric test options may be given when iptest is run.

       Needs to be run as root.

BUGS
       If you find any, please send email to me at darrenr@pobox.com



                                                                     IPTEST(1)