i can't successful about SQUID + MRTG .

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
snmp_access allow My_SNMP myhost
snmp_access deny all
snmp_incoming_address 0.0.0.0
snmp_outgoing_address 255.255.255.255
#############


And When i key this command .
[root@berlin squid]# snmpwalk -p 3401 localhost public
..1.3.6.1.4.1.3495.1.1
Warning: -p option is no longer used - specify the remote host as
HOST:PORT
USAGE: snmpwalk [OPTIONS] AGENT [OID]

Version: 5.1.2
Web: http://www.net-snmp.org/
Email: net-snmp-(E-Mail Removed)


Thank you very much for advance
Regards.,
Pratchaya

Haven't used MRTG but on the surface;
you may want to use "netstat -an | grep 3401" see if that port is
already being used.
And I think you use snmpwalk syntax wrongly.