portscanners

crashmeister · 04-04-2002, 06:41 PM

Been screwing around with firewalls for a little bit. The strange thing is: when I use one of those online portscanners I always get the same results. Linux w or w/o firewall windoze w or w/o firewall. Am I missing something here?
BTW - its always the same ports "stealthed" and closed nothing open

peter_robb · 04-05-2002, 03:15 AM

Try nmap scanner from http://www.insecure.org/nmap
There is command line scanner, nmap, and a gui interface, nmapfe.
You may need to get a 2nd internet connection, modem eg. to scan the firewall directly, and have some fun!! It's a brilliant tool to start with.
I have mine loaded into a remote machine and ssh to it for scans when I make changes to firewalls.

Rgds.