How to check if Ubuntu 14.04 Kernel has TPROXY
Solution 1:
On SUse 11 Sp2
node01:~ # grep TPROXY /boot/config-3.0.38-0.5-default
CONFIG_NETFILTER_TPROXY=m
CONFIG_NETFILTER_XT_TARGET_TPROXY=m
node01:~ # uname -r
3.0.38-0.5-default
I don't know the kernel version of ubuntu 14, but anyway, try grep in your kernel config under /boot Filesystem