Rob Sterenborg wrote: >>iptables -A INPUT -i $EXT_DEV -p tcp -d $EXT_DEV --dport 135 -j DROP >>iptables -A INPUT -i $EXT_DEV -p udp -d $EXT_DEV --dport 135 -j DROP > > ^^^^^^^^^^^ > > I guess the above and below is are typos ? It should be -d $EXT_IP. > Yup. They are. Sorry. Thought a copy& paste was sufficient. :) > > No. I am interested too in why udp shows "open" from a foreign host, > while tcp shows filtered. > How can I check if an udp port is really closed/filtered or opened ? I'm completely stumped on this issue. Thanks. ** All information contained in this email is strictly ** ** confidential and may be used by the intended receipient ** ** only. **