Please check whether you placed the squid port in dansguardian.conf file and also the iptables rule to redirect the requests on squid port to DG port which in your case is 8080.
DG conf file network settings:
PHP Code:
# Network Settings
#
# the IP that DansGuardian listens on. If left blank DansGuardian will
# listen on all IPs. That would include all NICs, loopback, modem, etc.
# Normally you would have your firewall protecting this, but if you want
# you can limit it to a certain IP. To bind to multiple interfaces,
# specify each IP on an individual filterip line.
filterip =
# the port that DansGuardian listens to.
filterport = 8080
# the ip of the proxy (default is the loopback - i.e. this server)
proxyip = put your server ip here
# the port DansGuardian connects to proxy on
proxyport = 80
PHP Code:
iptables -t nat -A PREROUTING -i eth0 -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 8080