Using Linux(redhat 9), how can I scan my network for all the PC's that are connected to the server?

meaning that, on windows you can run the command net view, and that will scan for all pc's that is on your network(same network group), I have a little network home, server and 2 clients, I want to know how can I scan the network to identify the server IP and my other client that is running windows XP.

I have nmap installed, I need to know the command for that.

Thanks.

If you mean connected via samba then you can use:
smbstatus

i am guessing that you are asking about nmap in particular since you say you have it installed but dont know the command

man nmap
should give you everything you are looking for if you want to use nmap for port scanning your home/private network

there are front-ends for nmap (nmapfe) which will take some of the guess work out of it for you if you do not want to filter through the man pages, just use the front end and it will create the syntax based on options/boxes chosen


nmap -v -O 192.168.0.0/24

will scan the class C IP range 192.168.0.0-192.168.0.255, find open ports on any up systems and attempt to identify the OS through TCP/IP Fingerprinting

hope this helps

thanks gvec that was helpful


can some one tell why do i get this

SInfo(V=3.50%P=i686-pc-linux-gnu%D=9/4%Time=41396DD7%O=135%C=1)
TSeq(Class=TR%IPID=I%TS=0)
T1(Resp=Y%DF=N%W=4000%ACK=S++%Flags=AS%Ops=MNWNNT)
T2(Resp=N)
T3(Resp=N)
T4(Resp=Y%DF=N%W=0%ACK=O%Flags=R%Ops=)
T5(Resp=Y%DF=N%W=0%ACK=S++%Flags=AR%Ops=)
T6(Resp=Y%DF=N%W=0%ACK=O%Flags=R%Ops=)
T7(Resp=N)
PU(Resp=Y%DF=N%TOS=0%IPLEN=B0%RIPTL=148%RID=E%RIPCK=E%UCK=E%ULEN=134%DAT=E)

when it guesses the operating system

I guess you have the -v switch enabled (the linux bit is from your box).

to scan the local area network I use nmap -sP 192.168.0.* (replace the first three from your ip with your ip).

nmap -sS -O 192.168.0.* works wuite well too.

regards,


gir.

after running the command nmap -sS -O 192.168.0.1

this is what i get:

(The 1652 ports scanned but not shown below are in state: closed)
PORT STATE SERVICE
135/tcp open msrpc
139/tcp open netbios-ssn
389/tcp open ldap
445/tcp open microsoft-ds
1025/tcp open NFS-or-IIS
1026/tcp open LSA-or-nterm
1720/tcp open H.323/Q.931
No exact OS matches for host (If you know what OS is running on it, see http://www.insecure.org/cgi-bin/nmap-submit.cgi).
TCP/IP fingerprint:
SInfo(V=3.50%P=i686-pc-linux-gnu%D=9/4%Time=4139BD95%O=135%C=1)
TSeq(Class=TR%IPID=I%TS=0)
T1(Resp=Y%DF=N%W=4000%ACK=S++%Flags=AS%Ops=MNWNNT)
T2(Resp=N)
T3(Resp=N)
T4(Resp=Y%DF=N%W=0%ACK=O%Flags=R%Ops=)
T5(Resp=Y%DF=N%W=0%ACK=S++%Flags=AR%Ops=)
T6(Resp=Y%DF=N%W=0%ACK=O%Flags=R%Ops=)
T7(Resp=N)
PU(Resp=Y%DF=N%TOS=0%IPLEN=B0%RIPTL=148%RID=E%RIPCK=E%UCK=E%ULEN=134%DAT=E)

I dunno why this happening before i was able to obtain the OS type.

Dunno what happend.

Is it xp sp2? Maybe the database doesn't include service pack 2 yet. If you use the -A switch it'll tell you more about the service running on each port. That'll help.

Gir.

No its Windows 2003 server, but also since u mentioned XP i also couldn't detect that too maybe bc of SP2.

Still can’t get it to work, any more ideas.

try scanning a linux box or a local router if you're on that sort of network. it looks like it's working okay, you can work out the os by the open ports yourself. use the -A switch for more info on services.

Gir.