Our firewall (Pix 535) is being flooded with ICMP connections (see messages below). It is causing the firewall CPU utilization to jump by 30% and the number of connections jumps from less than 100 to over 500. and I cannot figure out what is causing this. It has only recently started.
Mar 05 2009 10:41:59: %PIX-6-302020: Built inbound ICMP connection for faddr Den-Orion/0 gaddr 10.100.100.1/0 laddr 10.100.100.1/0
Mar 05 2009 10:41:59: %PIX-6-302021: Teardown ICMP connection for faddr Den-Orion/0 gaddr 10.100.100.1/0 laddr 10.100.100.1/0
