Disable TCP Timestamps onLinux
/etc/sysctl.conf file:
net.ipv4.tcptimestamps = 0
Disable TCP Timestamps on Windows
Key: HKEY
LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters
Value: Tcp1323Opts
Data: 0 or 1
Disable Timestamps on Cisco
no ip tcp timestamp