Hi Vikas,

You'll have to provide the source pcap for me to answer that.
tcprewrite should work equally well for all Cisco HDLC pcaps- at least
the ones I've ever seen.

On Mon, Nov 1, 2010 at 2:32 AM, Vikas Sharma <vsh...@gmail.com> wrote:
> Dear Aaron,
>
> you will recall that we had started with cisco HDLC conversion to ethernet.
>
> You had specified that we specify the MAC addresses in the conversion
> command.
>
> we used the following command :
>
> tcprewrite --enet-dmac=00:55:22:AF:C6:37 --enet-smac=00:44:66:FC:29:AF
> --infile=input.pcap --outfile=output.pcap
> However, when we try to decode output.pcap, we find that only P2P Packets,
> and some SSL packets can be decoded. the rest are not decoded (even though
> the systems do recognize TCP / UDP / ICMP transport protocols, but do not
> decode the actual data).
>
> Is this because we have not specified the second MAC address for the client
> to server traffic ? Can you clarify please. Please provide a sample command
> that should work for HTTP Cisco HDLC packets to be converted into ethernet
> packets.
>
> or do we need to specify the cachefile also ? Please provide an example for
> the same
>
> Do we also need to use the --skipbroadcast  flag ? Please explain
> Regards
> Vikas Sharma
>
> On Sun, Sep 12, 2010 at 11:20 PM, Aaron Turner <synfina...@gmail.com> wrote:
>>
>> Actually, it's asking you for MAC addresses.  Cisco HDLC does not have
>> this information in the header and they are required for Ethernet.  In
>> your case, I recommend you just make them up- any valid MAC address
>> will work.
>>
>> On Sun, Sep 12, 2010 at 4:58 AM, Vikas Sharma <vsh...@gmail.com> wrote:
>> > Dear Mr. Aaron Turner,
>> >
>> >
>> >
>> > My company is into security systems and had received a few CiscoHDLC
>> > pcap
>> > files (of 85 MBs each).
>> >
>> >
>> >
>> > Our software can only read only Ethernet packets and accordingly we
>> > tried to
>> > convert the CiscoHDLC pcap files into Ethernet (DLT) by using
>> >
>> >
>> >
>> > tcprewrite –dlt=enet --infile=input.pcap --outfile=output.pcap
>> >
>> >
>> >
>> > However the system (Ubuntu Lucid) asks for the source IP address and we
>> > are
>> > not able to provide that since that is not known to us (these are pcap
>> > files
>> > captured by an Endace DAG card on an OC3, STM line).
>> >
>> >
>> >
>> > Please suggest a way to convert CiscoHDLC pcap files into Ethernet pcap
>> > files.
>> >
>> >
>> >
>> > I have enclosed the protocol stack of the CiscoHDLC pcap file along with
>> > this email
>> >
>> > I await your response,
>> >
>> >
>> >
>> > Regards
>> >
>> >
>> >
>> > Vikas Sharma
>> >
>> >
>> > ------------------------------------------------------------------------------
>> > Start uncovering the many advantages of virtual appliances
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>> >
>>
>>
>>
>> --
>> Aaron Turner
>> http://synfin.net/         Twitter: @synfinatic
>> http://tcpreplay.synfin.net/ - Pcap editing and replay tools for Unix &
>> Windows
>> Those who would give up essential Liberty, to purchase a little temporary
>> Safety, deserve neither Liberty nor Safety.
>>     -- Benjamin Franklin
>> "carpe diem quam minimum credula postero"
>>
>>
>> ------------------------------------------------------------------------------
>> Start uncovering the many advantages of virtual appliances
>> and start using them to simplify application deployment and
>> accelerate your shift to cloud computing
>> http://p.sf.net/sfu/novell-sfdev2dev
>> _______________________________________________
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>> Tcpreplay-users@lists.sourceforge.net
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>
>



-- 
Aaron Turner
http://synfin.net/         Twitter: @synfinatic
http://tcpreplay.synfin.net/ - Pcap editing and replay tools for Unix & Windows
Those who would give up essential Liberty, to purchase a little temporary
Safety, deserve neither Liberty nor Safety.
    -- Benjamin Franklin
"carpe diem quam minimum credula postero"

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