06-23-2009 01:53 AM - edited 03-18-2019 11:14 PM
Hi guys ,i have a problem on my CUCM6 server where if you ping the server from anywhere on the network it replies to 5 pings and then drops 1 consistently. Although if i ping anything else on the same lan as the CUCM servers it is fine. This is happening with all 3 my CUCM6 servers ,any ideas what this could be ?
Solved! Go to Solution.
06-23-2009 05:03 AM
Hi Rynard,
This is working as designed :)
ICMP rate limiting is used to prevent ICMP Echo Request Flood Denial of Service attacks like documented here;
Cisco Security Advisory: Multiple Cisco Unified CallManager and Presence Server Denial of Service Vulnerabilities
http://www.cisco.com/en/US/products/products_security_advisory09186a008080f17b.shtml#@ID
Hope this helps!
Rob
06-23-2009 05:03 AM
Hi Rynard,
This is working as designed :)
ICMP rate limiting is used to prevent ICMP Echo Request Flood Denial of Service attacks like documented here;
Cisco Security Advisory: Multiple Cisco Unified CallManager and Presence Server Denial of Service Vulnerabilities
http://www.cisco.com/en/US/products/products_security_advisory09186a008080f17b.shtml#@ID
Hope this helps!
Rob
06-23-2009 05:19 AM
Thanks Rob ,was getting a bit worried there.
06-23-2009 05:47 AM
Hey Rynard,
You are most welcome. Always better "safe than sorry" my friend!
Cheers!
Rob
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