i can't successful about SQUID + MRTG .
Anyone Can help me ?

i got error in /var/log/squid/cache.log
like this.
#############
commBind: Cannot bind socket FD 13 to *:3401: (13) Permission denied
FATAL: Cannot open snmp Port
#############


When i config /etc/squid/squid.conf


#############
snmp_port 3401
acl snmppublic snmp_community public
snmp_access allow snmppublic all
snmp_access deny all
snmp_incoming_address 0.0.0.0
snmp_outgoing_address 0.0.0.0
#############


Thank you very much for advance
Regards.,
Pratchaya