The following items needs to be considered when using havp: 1. Madatory locking The filesystem on which SCANTEMPFILE lives must have madatory locking enabled (mand option to mount). Note that nfs does not support madatory locking. 2. Scanning directory size If you have limited space on the SCANTEMPFILE then you will need to set MAXSCANSIZE. 3. Transparent proxy For transparent proxying you need an IP tables rule such as: iptables -t nat -A PREROUTING -i eth0 -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 8080 where eth0 is the incomming port, and 8080 is the port that havp is running on.