root и squid

squid.conf:

#  TAG: cache_effective_user
#       If you start Squid as root, it will change its effective/real
#       UID/GID to the user specified below.  The default is to change
#       to UID to squid.  If you define cache_effective_user, but not
#       cache_effective_group, Squid sets the GID to the effective
#       user's default group ID (taken from the password file) and
#       supplementary group list from the from groups membership of
#       cache_effective_user.
#
#Default:
 cache_effective_user squid