Hi,
I haven't found the commit where you actually added
/etc/sysctl.d/tcp_timestamps.conf.
Does this implementation involve anything besides
/etc/sysctl.d/tcp_timestamps.conf?
http://www.tmltechnologies.com/html-2012/index.php/linux-rescue-kits/82-secret/91-disable-tcp-timestamps-on-linux
recommends:
> To be on the safe side, add the following 2 lines to your firewall script:
> iptables -A INPUT -p icmp --icmp-type timestamp-request -j DROP
> iptables -A OUTPUT -p icmp --icmp-type timestamp-reply -j DROP
What do you think?
Cheers,
Patrick