Hello there, Squid 2.6-STABLE6 CentOS 5 (2.6.18-8.el5xen #1 SMP x86_64 x86_64 x86_64 GNU/Linux) Trying to solve some trouble. I get " 172.16.3.1:3401" error. 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 ... How it's trying (from localhost): #/usr/bin/snmpwalk -v 1 -m /etc/squid/mib.txt -c xxxxxx 172.16.3.1:3401 .1.3.6.1.4.1.3495.1 Timeout: No Response from 172.16.3.1:3401 Also try to use version 2c protocol. SNMP is listening the port. [root@proxyv squid]# netstat -an | grep 3401 udp 0 0 172.16.3.1:3401 0.0.0.0:* [root@proxyv squid]# /sbin/iptables -n -L Chain INPUT (policy ACCEPT) target prot opt source destination RH-Firewall-1-INPUT all -- 0.0.0.0/0 0.0.0.0/0 Chain FORWARD (policy ACCEPT) target prot opt source destination RH-Firewall-1-INPUT all -- 0.0.0.0/0 0.0.0.0/0 Chain OUTPUT (policy ACCEPT) target prot opt source destination Chain RH-Firewall-1-INPUT (2 references) ...skipped ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:3401 ...skipped also trying to stop iptables service Where am I wrong? ------- Serj.