Default Can firewall reduce battery life?

Firewall remove unnecessary traffic. The packet is normally dropped, leaving the client application to wait for a long time-out.

Could this prevent the CPU from going into deep sleep? If so, would it make the battery life shorter?

gTablet, DRH Jelly Bean 4.3
Kindle Fire HD 8.9, PAC-man
Moto X XT1058, AT&T 4.4
Samsung Galaxy S4 i337, AT&T, 4.3 rooted