[Scion] Change in md5 values

Siddharth Mehrotra the4daspect at gmail.com
Tue Aug 13 13:22:13 CEST 2019


Thanks Juan.

It's clear now and indeed network-test can't be trusted now.

Best regards,
Siddharth



On Tue, Aug 13, 2019 at 1:17 PM Juan A. García-Pardo <juagargi at gmail.com>
wrote:

> Hi Siddharth,
> It seems to me that `network-test` is to blame. Try running it in other
> machines and it will always complain, if my hypothesis is correct.
> Also if you open it you will see these lines:
> ```
> [ -z "$CHECK_WEB_URL" ] && CHECK_WEB_URL="
> http://network-test.debian.org/moo"
> [ -z "$CHECK_WEB_MD5" ] && CHECK_WEB_MD5="5cd5515e6d2f9026fef667cdef4cda42"
> ```
> If you follow the usage of them you'll see there is a call to curl and a
> md5sum on the content. But that URL returns a 404, so I would not trust the
> test itself.
> Best regards,
>
> Juan A.
>
>
> On Tue, Aug 13, 2019 at 1:09 PM Siddharth Mehrotra <the4daspect at gmail.com>
> wrote:
>
>> Here you go
>>
>> https://drive.google.com/file/d/1qDJXeDnoTVGMnVFZuCy9FvJDEHOpefFU/view?usp=sharing
>>
>> Sid
>>
>> On Tue, Aug 13, 2019 at 12:22 PM Juan A. García-Pardo <juagargi at gmail.com
>> >
>> wrote:
>>
>> > Hi Siddharth,
>> > There is no attachment:
>> > http://lists.inf.ethz.ch/pipermail/scion/2019-August/thread.html#4
>> >
>> > Also, I don't understand when you say there is a change in a file when
>> > connecting to SCIONLab. Maybe if I can see the file it would be more
>> clear
>> > (what was the file?). What is it changed and when exactly ?
>> > And what do you mean by "The md5 hash value of *some* file was changed
>> > when received." ? when received from where?
>> > Thanks and best regards,
>> >
>> > Juan A.
>> >
>> >
>> > On Tue, Aug 13, 2019 at 12:13 PM Siddharth Mehrotra <
>> the4daspect at gmail.com>
>> > wrote:
>> >
>> >> Hi Juan,
>> >>
>> >> It is hard to guess for me!
>> >>
>> >> I performed a network test with command (
>> >> http://manpages.ubuntu.com/manpages/xenial/man1/network-test.1.html),
>> >> *network-test* and after this I saw change in md5 value.
>> >>
>> >> See the attached file in previous email, the error is highlighted by
>> >> yellow
>> >> text.
>> >>
>> >> Best,
>> >> Siddharth
>> >>
>> >> On Tue, Aug 13, 2019 at 12:07 PM Juan A. García-Pardo <
>> juagargi at gmail.com
>> >> >
>> >> wrote:
>> >>
>> >> > Hi Siddharth,
>> >> > Which files were modified?
>> >> > Best regards,
>> >> >
>> >> > Juan A.
>> >> >
>> >> >
>> >> > On Tue, Aug 13, 2019 at 12:03 PM Siddharth Mehrotra <
>> >> the4daspect at gmail.com>
>> >> > wrote:
>> >> >
>> >> >> Hi all,
>> >> >>
>> >> >> I noticed an interesting error while connecting to SCION.
>> >> >>
>> >> >> As soon as I typed vagrant ssh to connect to SCION network, I
>> noticed
>> >> >> system reporting modified files.
>> >> >>
>> >> >> The md5 hash value of *some* file was changed when received. I am
>> not
>> >> sure
>> >> >> whether this has anything to do related with SCION or my internet
>> >> issue ?
>> >> >>
>> >> >> Suggestions?
>> >> >>
>> >> >> Best Regards,
>> >> >> Siddharth
>> >> >>
>> >> >> Siddharth Mehrotra
>> >> >> Working Student
>> >> >> Usable Security & Privacy Group, Informatik 4
>> >> >> Rheinische Friedrich-Wilhelms-Universität Bonn
>> >> >> Bonn, Germany.
>> >> >> _______________________________________________
>> >> >> Scion mailing list
>> >> >> Scion at lists.inf.ethz.ch
>> >> >> https://lists.inf.ethz.ch/mailman/listinfo/scion
>> >> >>
>> >> >
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>> >
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>


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