I did a freebsd-update from 11.2 to 12.0. I had set the sysctl variable net.inet.icmp.tstamprepl to 0 in 11.2 to block the ICMP timestamp responses, but doesn't seem to work on 12.0. I wanted to ask in I was missing something else after searching for any other values that should effect it. -- Hans K. Fiedler