On Mit, 26 Apr 2000 Timo Schulz wrote about [suse-security] Portscans:

First I want to know if the victim can easily detect the scan and how to prevent such scans.

Yes. Try scanlogd.

Does SuSE 6.x contain any tools to do that ?

Yes. 6.3: scanlogd is in sec.

PS: I ask me, if it is legal to do portscans on any sites ?

Some admins consider a portscan as a preparation for an attack and contact the gateway admin of the IP adress the scan was from. If you want to scan a host, ask the admin _before_ your scan, otherwise you might get in trouble. Yours, Martin -- ----------------------------------------------------- Martin Peikert EN 636 Fachgebiet Theoretische Elektrotechnik TU Berlin Sekretariat EN 2 fon 314-23881 fax 314-22284 http://www-tet.ee.tu-berlin.de/peikert/index.html -----------------------------------------------------