There was a vulnerability test run on our developmental server having Red Hat Enterprise Linux Server release 5.11 (Tikanga) as the OS. There is one point among others of concern here; it is to do with ICMP timestamp response. The solution suggested is:
ipchains -A input -p icmp --icmp-type timestamp-request -j DROP
ipchains -A output -p icmp --icmp-type timestamp-reply -j DROP
When I gave the command,
ipchains -A input -p icmp --icmp-type timestamp-request -j DROP
it gave the message as below
-bash: ipchains: command not found
Please suggest how to go about it.
Please revert with the reply to my query.
Regards