Portal Home > Knowledgebase > Transparency Report > 08/08/2014 [SPAM] Nuclearfallout, Enterprises, Inc. @ Brazil 1 (161)

08/08/2014 [SPAM] Nuclearfallout, Enterprises, Inc. @ Brazil 1 (161)

Original report:

You appear to be running an open SNMP server at IP address 187.45.186.38 th
at participated in an attack against a customer of ours today, generating l
arge UDP responses to spoofed queries, with those responses becoming fragme
nted because of their size.

Please consider reconfiguring your SNMP system in one or more of these ways:

- Block queries made by unauthorized addresses. This can be done with an AC
L or other firewall rule.
- Use a different query string than "public" and which cannot
be easily gue
ssed by a 3rd party.
- Disable SNMP entirely.

If you are an ISP, please also look at your network configuration and make
sure that you do not allow spoofed traffic (that pretends to be from extern
al IP addresses) to leave the network. Hosts that allow spoofed traffic mak
e possible this type of attack.

Example SNMP responses sent to us by your device during the attack are give
n below.
Timestamps (far left) are PDT (UTC-7), and the date is 2014-08-01.

20:52:16.303443 IP (tos 0x0, ttl 50, id 0, offset 0, flags [DF], proto UDP
(17), length 1218) 187.45.186.38.161 > 74.91.113.x.3659: UDP, length 1190
0x0000: 4500 04c2 0000 4000 3211 12fc bb2d ba26 E.....@.2....-.&
0x0010: 4a5b 7180 00a1 0e4b 04ae d6cf 3082 04a2 J[q....K....0...
0x0020: 0201 0104 0670 7562 6c69 63a2 8204 9302 .....public.....
0x0030: 024e 4702 0100 0201 0030 8204 8530 6806 .NG......0...0h.
0x0040: 082b 0601 0201 0101 0004 5c4c 696e 7578 .+........\\Linux
0x0050: 206c .l

(The final octet of our customer's IP address is masked in the above output
because some automatic parsers become confused when multiple IP addresses
are included. The value of that octet is "128".)

-John
President
Nuclearfallout, Enterprises, Inc. (NFOservers.com)
##############################################

Please investigate this issue, and secure the server of further Abuse.

If you have any further questions or concerns, please reply to this ticket, and
we would be happy to assist you further.

Best Regards,
Perry - Hostingking.com

Action that has been taken from Proxy.sh: Because the server is located in a jurisdiction with precise intellectual property laws, we have reset accounts who forwarded port 161 (nothing may identify a single account) and we have blocked port 161 via Firewall.

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