That scan looks a lot like an nmap scan run with the P0 option. The P
zero option tells nmap "don't worry about a response, assume the host is
up" This causes nmap to tell you that all the ports you specified are
filtered, because nmap gets no response and yet believes the host up.
Try preceding your nmap scans with an arp-ping to determine if the host
is truly up or not.

Karl

On Wed, 2006-05-17 at 15:39 -0400, sanjeev sinha wrote:
> Is there a firewall in between?  What does the nessus log file
> suggests?  What are the various tcp states on the host being scanned
> while this is going on?
>  
> Sanjeev
>  
> All work and no play makes Jack a dull boy --- Jack Torrance, The
> Shining
>         ----- Original Message ----- 
>         From: Ray DuBose 
>         To: [email protected] 
>         Sent: Wednesday, May 17, 2006 2:43 PM
>         Subject: Not Reporting Ports
>         
>         
>         
>         Hey,
>         
>          
>         
>          Fairly new to nessus so be kind.  I have 2 IP’s that I’ve
>         been asked to scan.  When I run NMAP against them using –sS I
>         get several filtered ports:
>         
>          
>         
>         (The 56612 ports scanned but not shown below are in state:
>         closed)
>         
>         PORT      STATE    SERVICE
>         
>         21/tcp    filtered ftp
>         
>         22/tcp    filtered ssh
>         
>         23/tcp    filtered telnet
>         
>         80/tcp    filtered http
>         
>         137/tcp   filtered netbios-ns
>         
>         161/tcp   filtered snmp
>         
>         162/tcp   filtered snmptrap
>         
>         443/tcp   filtered https
>         
>         491/tcp   filtered go-login
>         
>         554/tcp   filtered rtsp
>         
>         3389/tcp  filtered ms-term-serv
>         
>         4441/tcp  filtered unknown
>         
>         4444/tcp  filtered krb524
>         
>         5350/tcp  filtered unknown
>         
>         7070/tcp  filtered realserver
>         
>         8000/tcp  filtered http-alt
>         
>         8080/tcp  filtered http-proxy
>         
>         8087/tcp  filtered unknown
>         
>         8380/tcp  filtered unknown
>         
>         8480/tcp  filtered unknown
>         
>         10000/tcp filtered snet-sensor-mgmt
>         
>         10130/tcp filtered unknown
>         
>         11889/tcp filtered unknown
>         
>          
>         
>         But when I run a Nessus Scan against the same host I get
>         nothing back other than a genera/tcp
>         
>         Information about this scan : 
>         
>          
>         
>         Nessus version : 3.0.2
>         
>         Plugin feed version : 200603211235
>         
>         Type of plugin feed : Release
>         
>         Scanner IP : 10.1.11.113
>         
>         Port scanner(s) : synscan 
>         
>         Port range : 1-65535
>         
>         Thorough tests : no
>         
>         Experimental tests : no
>         
>         Paranoia level : 1
>         
>         Report Verbosity : 1
>         
>         Safe checks : yes
>         
>         Max hosts : 16
>         
>         Max checks : 10
>         
>         Scan Start Date : 2006/5/17 13:15
>         
>         Scan duration : 285 sec
>         
>          
>         
>         And general/UDP that just shows a traceroute to the host. I’m
>         running Nessus on Fedora Core 5 and this is the latest version
>         of Nessus as I just built it today.  I’ve tried all the port
>         scanners that are listed as well as both the Linux Client and
>         the Windows Client. The NMAP was run from the same Nessus
>         Server.  Am I doing something wrong?
>         
>          
>         
>         Ray
>         
>          
>         
>         
>         
>         ______________________________________________________________
>         
>         _______________________________________________
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