Simple How To Block Traceroute / Tracert on RouterOS /ip firewall filter add action=drop chain=forward icmp-options=11:0 protocol=icmp add action=drop chain=forward icmp-options=3:3 protocol=icmp Credit: www.o-om.com
/ip firewall filter add action=drop chain=forward icmp-options=11:0 protocol=icmp add action=drop chain=forward icmp-options=3:3 protocol=icmp