Fragmented packets

"Tate, Denis - UK" <[email protected]> Mon, 2 Oct 2006 10:45:03 +0100
Newsgroups gmane.network.ethereal.user
Message-ID <[email protected]>
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Hi - Can you help me
	I'm using ethereal 0.10.14 to decode some SNMP messages for our
application.
	I've set up the mib's so that ethereals' SNMP protocol decoder
can display the messages correctly in ethereals own captures and is able
to cope with fragmented packets by re-combining them.
	A 3rd party has captured some traffic using an unknown analyser
and presented me with the trace in a '.dat' file
	The only problem is that some of the packets, due to the size of
the message are fragmented, which the SNMP decoder cannot process.
	Is there any way of setting ethereal to re-combine the
fragmented packets, or the SNMP decoder to process the fragmented
packets, or does this have to be done 'at source' ?

best regards,
Denis Tate
Senior Systems Engineer
> Peek Traffic Limited.
General:  +44 (0) 1923 289310
Direct:     +44 (0) 1923 289328
Fax:        +44 (0) 1923 859195
Web:www.peek-traffic.co.uk
The information in this e-mail is confidential and is intended for the
addressee only. Access to this e-mail by anyone else has not been
authorised by Peek Traffic Ltd.
It is not to be relied upon by any person other than the addressee
except with our prior written approval. If no such approval is given, we
will not accept any liability (in negligence or otherwise) arising from
any third party acting, or refraining from acting, on such information.
Unauthorised recipients are requested to maintain confidentiality. If
you have received this e-mail in error, please notify us immediately by
e-mailing [email protected] or calling 01923 289310 or
faxing 01923 859195, and also we would ask you to destroy any copies and
delete this e-mail from your computer system. Copyright in this e-mail
and any document created by us will be and remain vested in us and will
not be transferred to you.



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<P><FONT SIZE=3D2 FACE=3D"Arial">Hi - Can you help me</FONT>

<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <FONT SIZE=3D2 =
FACE=3D"Arial">I'm using ethereal 0.10.14 to decode some SNMP messages =
for our application.</FONT>

<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <FONT SIZE=3D2 =
FACE=3D"Arial">I've set up the mib's so that ethereals' SNMP protocol =
decoder can display the messages correctly in ethereals own captures and =
is able to cope with fragmented packets by re-combining them.</FONT></P>

<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <FONT SIZE=3D2 =
FACE=3D"Arial">A 3rd party has captured some traffic using an unknown =
analyser and presented me with the trace in a '.dat' file</FONT></P>

<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <FONT SIZE=3D2 =
FACE=3D"Arial">The only problem is that some of the packets, due to the =
size of the message are fragmented, which the SNMP decoder cannot =
process.</FONT></P>

<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <FONT SIZE=3D2 =
FACE=3D"Arial">Is there any way of setting ethereal to re-combine the =
fragmented packets, or the SNMP decoder to process the fragmented =
packets, or does this have to be done 'at source' ?</FONT></P>

<P><FONT SIZE=3D2 FACE=3D"Arial">best regards,</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">Denis Tate</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">Senior Systems Engineer</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">Peek Traffic Limited.</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">General:&nbsp; +44 (0) 1923 =
289310</FONT>

<BR><SPAN LANG=3D"en-gb"><FONT SIZE=3D2 =
FACE=3D"Arial">Direct:&nbsp;&nbsp;&nbsp;&nbsp; +44 (0) 1923 =
289328</FONT></SPAN>

<BR><SPAN LANG=3D"en-gb"><FONT SIZE=3D2 =
FACE=3D"Arial">Fax:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; +44 (0) =
1923 859195</FONT></SPAN>

<BR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 =
FACE=3D"Arial">Web:www.peek-traffic.co.uk</FONT></SPAN>

<P ALIGN=3DCENTER><SPAN LANG=3D"en-gb"><FONT SIZE=3D2 FACE=3D"Arial">The =
information in this e-mail is confidential and is intended for the =
addressee only. Access to this e-mail by anyone else has not been =
authorised by Peek Traffic Ltd.</FONT></SPAN></P>

<P ALIGN=3DCENTER><SPAN LANG=3D"en-gb"><FONT SIZE=3D2 FACE=3D"Arial">It =
is not to be relied upon by any person other than the addressee except =
with our prior written approval. If no such approval is given, we will =
not accept any liability (in negligence or otherwise) arising from any =
third party acting, or refraining from acting, on such information. =
Unauthorised recipients are requested to maintain confidentiality. If =
you have received this e-mail in error, please notify us immediately by =
e-mailing </FONT><FONT COLOR=3D"#0000FF" SIZE=3D2 =
FACE=3D"Arial">[email protected]</FONT><FONT SIZE=3D2 =
FACE=3D"Arial"> or calling </FONT><FONT COLOR=3D"#0000FF" SIZE=3D2 =
FACE=3D"Arial">01923 289310</FONT><FONT SIZE=3D2 FACE=3D"Arial"> or =
faxing </FONT><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">01923 =
859195</FONT><FONT SIZE=3D2 FACE=3D"Arial">, and also we would ask you =
to destroy any copies and delete this e-mail from your computer system. =
Copyright in this e-mail and any document created by us will be and =
remain vested in us and will not be transferred to =
you.</FONT></SPAN></P>
<BR>

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