Attack? Scans from unknown IP on router

We have several 'attack events' coming in from IP addresses we are not familiar with and wanted to know what the protocol is. It doesn't look like these attacks are happening more than one occasion.

#/IP address/Events

1/124.40.246.86/14
2/62.210.251.48 62-210-251-48.rev.poneytelecom.eu/12
3/182.72.26.54 nsg-static-054.26.72.182.airtel.in/9
4/208.87.234.202 webdefence-pool-02.cluster-h.webs
ense.net/2
5/173.252.90.2 edge-liverail-shv-13-atn1.facebook.com/1
Larry KiterlingAsked:
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John Gates, CISSPSecurity ProfessionalCommented:
You are seeing the typical bots the second one is from RIPE (Amsterdam)

https://whois.arin.net/rest/net/NET-62-0-0-0-1/pft?s=62.210.251.48]

Use www.arin.net to do WHOIS on any IP to find the block owner..

The first IP is APICNIC (Asia)
https://whois.arin.net/rest/net/NET-124-0-0-0-1/pft?s=124.40.246.86

So it looks like it could be a test for a future DDOS attack.  Is this a home or company?

You can check the ports here: https://isc.sans.edu/port.html?port=14 

This will give you an idea.  Ports that low to me are what's making me think it was testing.  Low ports are not used for much these days but the system still has to take time to process (and log) them.  That is the nature of the DDOS attack to waste processor time on your routing devices to slow your network down or stop it completely.  If you are a business I have some additional suggestions for you regarding your upstream provider (ISP) they can help you mitigate a DDOS attack by implementing ingress filtering.  Their infrastructure can handle much more than yours and will lessen or eliminate the disruption.  If you are a home user I would not stress much about it..  

Hope this helps!
-D-

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Larry KiterlingAuthor Commented:
damn john killin it! thanks and have a great weekend my friend
Larry KiterlingAuthor Commented:
bosshog!
btanExec ConsultantCommented:
likely these IP is compromised or taken over by some sort of bot master to direct and launch "attack" on their target. taking the snapshot of a single ip from each range, you can see that at least three of them fall into SPAM or Block blacklist (look out for the "cross" in each). Better to check the specific log in your FW and IPS to see if there is any signature or exploit attempts.

For the protocol, it should be based on the port though the source may not adhere it. The common DDoS protocol using HTTP, SSDp, NTP to amplify the effects to bring target down faster are gaining traction see the US CERT advisory (https://www.us-cert.gov/ncas/alerts/TA14-017A) - check out the mitigation too though you may not trace back to origin source (can be proxy fronted by ISP)

For 124.40.246.86 (Bangalore Broadband Network Pvt Ltd)
http://www.tcpiputils.com/browse/ip-address/124.40.246.86
For 62.210.251.48 (in France)
http://www.tcpiputils.com/browse/ip-address/62.210.251.48
For 182.72.26.54 (BHARTI Airtel Ltd.)
http://www.tcpiputils.com/browse/ip-address/182.72.26.54
For 208.87.234.202 (Websense Hosted R&D Ltd.)
http://www.tcpiputils.com/browse/ip-address/208.87.234.202
For 173.252.90.2 (Facebook, Inc.)
http://www.tcpiputils.com/browse/ip-address/173.252.90.2
John Gates, CISSPSecurity ProfessionalCommented:
You're welcome!  Enjoy your weekend as well!

-J-
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