Do you have a question? Post it now! No Registration Necessary. Now with pictures!
- Posted on
- nmap output "open | filtered"
April 5, 2005, 12:18 pm
rate this thread
I'm scanning a windows server in my network and getting this output
nmap -sU :
PORT STATE SERVICE
42/udp open|filtered nameserver
123/udp open|filtered ntp
135/udp open|filtered msrpc
137/udp open|filtered netbios-ns
138/udp open|filtered netbios-dgm
how can ports be open and filtered at the same time? or how should I
interpret this information?
Re: nmap output "open | filtered"
'|' should be interpreted as 'or'. The ports are either open or
filtered, and there is no easy way to distinguish the two.
A closed port would return an icmp-port-unreacheable, but if no answer
is received (like in your case) the port is either open (application
accepting the packets) or a portfilter is silently dropping the packets
- » Cloud Ace Technologies is offering Implementation Services on Cloud Computing, Cloud Serv...
- — Newest thread in » Linux Security