> Here it is snmp config in squid.conf > ... > acl snmpbsu snmp_community xxxxxx > acl admins <some_internal_subnet> > snmp_port 3401 > snmp_access allow snmpbsu localhost > snmp_access allow snmpbsu admins > snmp_access deny all > snmp_incoming_address 172.16.3.1 #here it is internal proxy interface. > snmp_outgoing_address 255.255.255.255 This is what I use. snmp_port 3401 acl snmppublic snmp_community public snmp_access allow snmppublic localhost snmp_access deny all snmp_incoming_address 0.0.0.0 snmp_outgoing_address 0.0.0.0 and perform below commands. [root@mail ~]# snmpwalk -m /etc/squid/mib.txt -v2c -c public localhost:3401 .1.3.6.1.4.1.3495.1.1 SQUID-MIB::cacheSysVMsize.0 = INTEGER: 1692 SQUID-MIB::cacheSysStorage.0 = INTEGER: 37860 SQUID-MIB::cacheUptime.0 = Timeticks: (913871) 2:32:18.71 and [root@mail ~]# snmpwalk -v2c -c public localhost:3401 .1.3.6.1.4.1.3495.1.1 SNMPv2-SMI:: enterprises.3495.1.1.1.0 = INTEGER: 1696 SNMPv2-SMI::enterprises.3495.1.1.2.0 = INTEGER: 37860 SNMPv2-SMI::enterprises.3495.1.1.3.0 = Timeticks: (914781) 2:32:27.81 -- Thank you Indunil Jayasooriya