linux box disallow incoming udp traffic ??

[Mike Klinke]

On Monday 15 August 2005 04:16, M E Fieu wrote:

> May I know why nmap -sU can't scan another linux PC ??

It works for me here on an FC3 box.  Did you see the caveats in the 
man page for udp scans?

Regards, Mike Klinke

nmap -sU -p 1-125 192.168.1.1

Starting nmap 3.70 ( http://www.insecure.org/nmap/ ) at 2005-08-15 
08:59 CDT
Interesting ports on 192.168.3.1:
(The 123 ports scanned but not shown below are in state: closed)
PORT    STATE         SERVICE
53/udp  open|filtered domain
123/udp open|filtered ntp
MAC Address: 00:60:97:71:2C:5C (3com)

Nmap run completed -- 1 IP address (1 host up) scanned in 123.185 
seconds