Yosemite port forwarding

Please check the port forwarding commands for errors
the content of pf.conf file is:

(#) com.apple anchor point
scrub-anchor "com.apple/*"
nat-anchor "com.apple/*"
rdr-anchor "com.apple/*"
dummynet-anchor "com.apple/*"
anchor "com.apple/*"
load anchor "com.apple" from "/etc/pf.anchors/com.apple"

This content remains unchanged even when ettercap runs :/