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Man Pages


Manual Reference Pages  -  FRAGTEST (8)

NAME

fragtest - test IP fragment reassembly behaviour

CONTENTS

Synopsis
Description
Author
Bugs

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.
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