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FRAGTEST(8)            DragonFly System Manager's Manual           FRAGTEST(8)

NAME
       fragtest - test IP fragment reassembly behaviour

SYNOPSIS
       fragtest TESTS ... host

DESCRIPTION
       fragtest probes the remote host to determine its TCP/IP stack
       behaviour.

       The TESTS may include any of the following (or may be specified as all
       to perform them all):

       ping   Send an ICMP echo request to the host.

       ip-opt Send ICMP echo requests with different IP options, to see which
              IP options are supported.

       frag   Send an ICMP echo request as 8-byte fragments.

       frag-new
              Send an ICMP echo request as 8-byte fragments with an
              overlapping 16-byte fragment, favoring newer data in reassembly.

       frag-old
              Send an ICMP echo request as 8-byte fragments with an
              overlapping 16-byte fragment, favoring older data in reassembly.

       frag-timeout
              Send an ICMP echo request as 8-byte fragments, omitting the last
              fragment, and wait for an ICMP time-exceeded-in-reassembly
              reply.

SEE ALSO
       fragroute(8)

AUTHOR
       Dug Song <dugsong@monkey.org>

BUGS
       Firewalls or other filtering network devices may block IP fragments,
       packets with IP options, ICMP echo traffic, etc.

                                                                   FRAGTEST(8)