ICMP Timestamp Request Remote Date Disclosure

[afathi1992]

how to Filter out the ICMP timestamp requests (13), and the outgoing ICMP timestamp replies (14) on Cisco Switch C9200-48P CLI?

[Flavio Miranda · Accepted solution]

@afathi1992 

access-list 101 deny icmp any any timestamp-request

You can also try

deny icmp any any 13 
deny icmp any any 14