.\"	$FreeBSD$
.\"
.TH IPTEST 1
.SH NAME
iptest \- automatically generate a packets to test IP functionality
.SH SYNOPSIS
.B iptest
[
.B \-1234567
] [
.B \-d
<device>
] [
.B \-g
<gateway>
] [
.B \-m
<\fIMTU\fP>
] [
.B \-p
<\fIpointtest\fP>
] [
.B \-s
<\fIsource\fP>
] <destination>
.SH DESCRIPTION
.PP
\fBiptest\fP ...
.SH OPTIONS
.TP
.B \-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).
.TP
.B \-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).
.TP
.B \-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).
.TP
.B \-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)).
.TP
.B \-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).
.TP
.B \-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.
.TP
.B \-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.
.TP
.BR \-d \0<interface>
Set the interface name to be the name supplied.
.TP
.BR \-g \0<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.
.TP
.BR \-m \0<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.
.TP
.B \-p <test>
Run a...
.DT
.SH SEE ALSO
ipsend(1), ipresend(1), bpf(4), ipsend(5), dlpi(7p)
.SH DIAGNOSTICS
Only one of the numeric test options may be given when \fIiptest\fP is run.
.PP
Needs to be run as root.
.SH BUGS
.PP
If you find any, please send email to me at darrenr@pobox.com