On Tue, Jun 05, 2007 at 07:00:31PM +0200, Elvir Kuric wrote: > Hi all, I realised that I did not ask question on right way in my > last mail to this list. I am trying to find out some tool or whatever > else to open in input and output chain only ports I need, I mean to > control which ports are open. > In other words to have evidence which ports are open and why. Maybe > this is funny for more experience users, but I asked this question > here because I thought that iptables can help / and maybe can, but I > do not know that :). Netfilter can help you here, but if I wanted to learn, I'd use tcpdump and/or wireshark. An "ACCEPT and log" rule in iptables might help as well. Generally, the port from which a connection originates does only matter in exceptional cases. Greetings Marc -- ----------------------------------------------------------------------------- Marc Haber | "I don't trust Computers. They | Mailadresse im Header Mannheim, Germany | lose things." Winona Ryder | Fon: *49 621 72739834 Nordisch by Nature | How to make an American Quilt | Fax: *49 3221 2323190