Thread: Igmp
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Old 26-05-2011, 03:24   #4
thenry
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Re: Igmp

apologies for the late reply, thanks.

what about WAN Ping Blocking - Block ICMP Ping? I'm a VM customer, will me blocking ICMP pings affect the way VM communicates with my modem/router etc.? will it cause a problem?

I'm trying to secure my set up because of the following, and because its become known to me that there has been activity of sort going on before I done my best to stop it which resulted in my router firewall blocking the events below....

Quote:
ICMP packet magnification (or ICMP Smurf): An attacker sends forged ICMP echo packets to vulnerable networks' broadcast addresses. All the systems on those networks send ICMP echo replies to the victim, consuming the target system's available bandwidth and creating a denial of service (DoS) to legitimate traffic.
http://www.ids-sax2.com/articles/Blo...MPmessages.htm
my router firewall log:

05/26/2011 03:25:24 **Smurf** 0.0.0.0, 4096->> 192.168.2.1, 53 (from LAN1 Inbound)
05/26/2011 03:19:53 **Smurf** 0.0.0.0, 4096->> 192.168.2.1, 53 (from LAN1 Inbound)
05/26/2011 02:34:43 **Smurf** 0.0.0.0, 4096->> 192.168.2.1, 53 (from LAN1 Inbound)
05/26/2011 02:32:04 **Smurf** 0.0.0.0, 4096->> 192.168.2.1, 53 (from LAN1 Inbound)
05/25/2011 18:06:38 **Smurf** 0.0.0.0, 4096->> 192.168.2.1, 53 (from LAN1 Inbound)
05/25/2011 09:52:55 **Smurf** 0.0.0.0, 4096->> 192.168.2.1, 53 (from LAN1 Inbound)
05/24/2011 16:44:23 **Smurf** 0.0.0.0, 4096->> 192.168.2.1, 53 (from LAN1 Inbound)
05/24/2011 08:39:08 **Smurf** 0.0.0.0, 4096->> 192.168.2.1, 53 (from LAN1 Inbound)
05/23/2011 15:28:25 **Smurf** 0.0.0.0, 4096->> 192.168.2.1, 53 (from LAN1 Inbound)
05/23/2011 09:01:22 **Smurf** 0.0.0.0, 4096->> 192.168.2.1, 53 (from LAN1 Inbound)
05/22/2011 15:47:01 **Smurf** 0.0.0.0, 4096->> 192.168.2.1, 53 (from LAN1 Inbound)
05/22/2011 09:47:04 **Smurf** 0.0.0.0, 4096->> 192.168.2.1, 53 (from LAN1 Inbound)
05/21/2011 19:28:09 **Smurf** 0.0.0.0, 4096->> 192.168.2.1, 53 (from LAN1 Inbound)
05/21/2011 10:06:37 **Smurf** 0.0.0.0, 4096->> 192.168.2.1, 53 (from LAN1 Inbound)
05/20/2011 19:35:54 **Smurf** 0.0.0.0, 4096->> 192.168.2.1, 53 (from LAN1 Inbound)

I don't down or up torrents.
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