#1:*For beginners to start with here is the basics of nmap*:
===========================
Syntax: nmap <Type of Scan> <options> Target
===========================
*<Scan types>*
*Types of Scan** **Option*
SYN scan -sS
UDP scan -sU
TCP Scan -sT
ACK scan -sA
FIN scan -sF
Null scan -sN
XMas Scan -sX
*Note:* FIN,NULL and XMas scans are called as stealth scans.
There are other types of scans also like icmp Echo, ping scan, Idle scan
etc. Please refer to NMAP documentation/help for more types.
*<Options>*
-p<port range> --> port range can be single port or multiple ports separated
by commas or range of ports (EX: -p23 OR
-p23,25,110,3389 OR -p1-65535)
-sV Version --> displays the version of the service running (Ex: IIS
6.0)'
-O Operating System --> OS fingerprinting
-T(0-5) Timing option --> ideally -T4 is preferable for faster scan with
optimum performance
-PN host discovery skip --> This option is very useful when you are sure
that target is up/alive
*Target:*
Target can be either IP address or netmask or Website
Here are few Exaples:
*nmap -sS -O -p1-65535 192.168.0.34*
*nmap -sS -sV -p23,80-110,3389 192.168.0.34*
*nmap -sS -sV -p23 192.168.0-5.1-254*
*<< My Observations:*
*Nmap scan on Linux operating system is faster than the scan on windows
operating systems >>*
Regards,
Ravi Gopal
On Tue, Jun 1, 2010 at 2:37 AM, Sandeep Thakur <[email protected]> wrote:
> Thanks Naik for passing us the nmap cheatsheet. Pls find the below
> link which is interesting and can give you little depths of how nmap
> works or process the commands...
>
>
> http://haymanezzeldin.blogspot.com/2008/03/nmap-detection-and-countermeasures.html
>
>
> Regards
> Sandeep Thakur
>
> On May 31, 10:56 am, Srinivas Naik <[email protected]> wrote:
> > Hey,
> >
> > Further Scans is disclosed in this attached CheatSheet.
> >
> > Regards,
> > Srinivas Naik
> >
> > On Sun, May 30, 2010 at 10:42 PM, N41K <[email protected]> wrote:
> > > Hi,
> >
> > > Shall we have discussion on NMAP, as there are many Network Security
> > > Experts in our community.
> >
> > > Lets list out what all can be discussed .
> >
> > > Policy compliance scan
> > > # nmap -vv –PA80 –PE –PS23 –sS –iL input.lst --excludefile banned.lst
> > > -A --osscan_limit –F –R -oA policy_check
> >
> > > Firewall Audit
> > > # nmap -vv –P0 –sA –iL input.lst --excludefile banned.lst –r -n -oA
> > > firewall
> >
> > > Regards,
> > > 0xN41K
> >
> >
> >
> > Nmap5_cheatsheet.pdf
> > 497KViewDownload
>
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