On Wed, Aug 23, 2000 at 11:59:00PM -0700, Nate Amsden wrote: > > My latest port scan (nmap running through all -s options) results show
[port scan results] > > And I'm behind a firewall, though my machine is not firewalled itself, > > not yet at least. > > What ports did you scan? i usually specify -p 1-65535 when using nmap. > if it were my machine i would for sure firewall all those > services(except smtp). huh, my protscan shows this: Interesting ports on Blackbird (127.0.0.1): Port State Protocol Service 9 open tcp discard 13 open tcp daytime 21 open tcp ftp 23 open tcp telnet 25 open tcp smtp 37 open tcp time 111 open tcp sunrpc 119 open tcp nntp 139 open tcp netbios-ssn 757 open tcp unknown 1024 open tcp unknown 1025 open tcp listen 6000 open tcp X11 first of all, what are these "unknown" entries about? these ports are not listed in /etc/services. and then, I use my machine as a gateway to the Internet, so is this ipchains-chain alright or do I need more firewalling? ipchains -A input -p tcp -i ippp0 -y -l -j DENY ippp0 is my ISDN-device. Thanks a lot, Michael Banck
