В выводе iptables-save
# Generated by iptables-save v1.3.8 on Sun Mar 14 19:42:45 2010
*filter
:INPUT ACCEPT [328764:37367248]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [324693:28884726]
COMMIT
# Completed on Sun Mar 14 19:42:45 2010
Что означают цифры 328764:37367248?