03-29-2004 08:28 PM - edited 03-02-2019 02:38 PM
How can I block ICMP packets on all the switches
03-29-2004 08:46 PM
You can block ICMP by creating an access-list like this:
access-list X deny icmp any any echo
access-list X deny icmp any any echo-reply
X= any number.
-Gabriel
03-31-2004 05:27 AM
You must create an access list (extended) on all your switches like this:
hostname>enable
hostname#configure terminal
hostname(config)access-list 100 deny icmp any any echo
hostname(config)access-list 100 deny icmp any any echo reply
hostname(config)interface s0 (for example- you must specify your interface over wich the packets exit or enter)
ip access-group 100 in/out
in if your packets enter on the switch. out if your packets exit from your switch.
you must look the your network diagram and follow the above directions.
Write me at filippo.ceruti1982@libero.it for more info. I will happy to help you
Bye Filippo Ceruti
03-31-2004 05:43 AM
I have forget a command: after you typed access-list 100 deny icmp any any echo reply, you must type this:
hostname(config) access-list 100 permit ip all
and follow the other commands!
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