nanog mailing list archives

Re: OT - NO (Non-Operational) Question


From: Joe Blanchard <jbfixurpc () gmail com>
Date: Fri, 17 Dec 2010 01:51:41 -0600

Thanks Jay

To add to this

Sleepy here but a quick script ((linux for you windows guys)

[root@sumless3 jgb]# cat send_text.sh
#!/bin/sh
echo "go"
     # Server's IP address
     #
     IP_ADDRESS='some_smtp_relay.com'
mf="mail from:"
rp="rcpt to:"
echo $mf
(sleep 2 ;\
echo "HELO guess.net";\
sleep 2;\
echo $mf " <adminops1 () blah net>" ;\
echo $rp " <44421211 () tmomail net>" ;\ \*Bogus return addy *\
sleep 4;\
echo "data";\
sleep 3;\
echo "Subject: Merry Christmas!.. ";\
echo "From: Spammerr";\
echo "To: YOU";\
echo "
SPAM SPAM blah blah...
-
sleep 2;\
echo ".";\
sleep 1;\
echo "quit";\
sleep 2) | telnet $IP_ADDRESS 25
#| telnet $IP_ADDRESS 25
exit




Seems to put them thru, and unless you the providers Tier3-4 suport theres
nothing you can do... Only a matter of time till something does a count(n)
in C or else...

Cheers,
Thanks Andreww!

-Joe



On Fri, Dec 17, 2010 at 1:14 AM, Jay Ashworth <jra () baylink com> wrote:

----- Original Message -----
From: "Andrew Haninger" <ahaning () mindspring com>
To: "Joe Blanchard" <jbfixurpc () gmail com>
Cc: nanog () nanog org
Sent: Friday, December 17, 2010 1:28:47 AM
Subject: Re: OT - NO (Non-Operational) Question
On Fri, Dec 17, 2010 at 12:22 AM, Joe Blanchard <jbfixurpc () gmail com>
wrote:

It appears there's really no easy way to determine the origin of a
text sent to a cell...

For shortcodes, Neustar provided a list:


https://www.usshortcodes.com/csc/directory/directoryList.do?method=showDirectory&group=all

For regular cellular numbers, the Wireless Amber Alert site is popular
amongst MVNO (e.g. prepaid) users to find out so they can use the
email-to-text gateways:

http://www.wirelessamberalerts.com/

(You don't actually sign up, just enter the number and then it will
tell you
the carrier.)

For landlines/VoIP/etc. Google should be able to tell you at least the
city/state. Though it's rare that you will get a text from a landline,
it is possible.

I could be wrong, but I think the actual question was "is it realistic
to assume a text to a cellphone came from the number it *says* it came
from?" and I think the answer is "no, there are a few ways to spoof it".

Received SMS messages are probably not evidentiary, absent a report from
the receiving carrier of the message traffic log involved, which would
itself be hearsay unless someone testified about it.

Cheers,
-- jra




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