[nsp-sec] VoIP scanning/abuse -> MyCERT/TTNET-MY

Nicolas FISCHBACH nicolist at securite.org
Fri Jun 13 04:53:10 EDT 2008


Hi,

VoIP scanning and abuse is a reality (but that's no news ;-)

.44 is a Cisco CME that has been mostly "naked" on the Internet (with no
need to have an account for H.323/SIP/SCCP) for a couple of days in one of
our test labs.

Someone in Malaysia seems to have lots of friends in Cuba (or is playing
VoIP->TDM/PSTN gateway for them).

   *Jun 13 08:11:59.805: %SEC-6-IPACCESSLOGP: list 123 denied udp
    124.217.252.167(5060) -> 213.27.203.44(5060), 2 packets

Timestamp is UTC.

goldorak(nico):~$ /usr/sbin/traceroute 124.217.252.167
[...]
11  203.121.72.52 (203.121.72.52)  304.547 ms  305.641 ms 203.208.190.98 
(203.208.190.98)  215.066 ms
12  124.217.252.167 (124.217.252.167)  332.221 ms  324.344 ms 
ge-2-0-6.glsfb02.icr.time.net.my (203.121.99.13)  321.021 ms

AS      | IP               | AS Name
9930    | 124.217.252.167  | TTNET-MY TIMEdotNet Berhad

This not urgent nor of high importance, just fun on a Friday morning :)

Nico.
-- 
Nicolas FISCHBACH
Senior Manager - Network Engineering/Security - COLT Telecom
e:(nico at securite.org) w:<http://www.securite.org/nico/>



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