Re: Protocol specific port lists - setting TCP ports removes UDP default list

[wolfric1 <wolfric1 () gmail com>]

AFAIK you can't do tcp top ports or udp top ports... the reason you're only
getting tcp ports is you specified T:1-100 for tcp ports and no udp ports.
try

nmap -vvv -n -r -sS -sU -pT-,U:22,80,etc  <target>

the - after t scans all ports
If you want though you can do --top-ports # to do top ports. If you specify
-p you'll get rid of the top ports. if you just do --top-ports, it'll do the
top ports for both tcp and udp for the same amount.

Wolfric


On Fri, Oct 29, 2010 at 4:06 PM, Marcus Haebler <haebler () gmail com> wrote:

> Hi,
>
> I am trying to figure out if the following behavior is a bug or a feature:
>
> nmap -vvv -n -r -sS -sU -p T:1-100 <target>
>
> This will scan TCP ports 1-100 but no UDP ports. The UDP port list is empty
> and consequently no scan is done. I would have expected that the UDP port
> list is still the default list of ports.
>
> The documentation does not mention this behavior. If it turns out to be the
> desired behavior it should be added to the documentation.
>
> BTW what I really want to do is scan the top 1000 UDP ports and all 64k TCP
> ports in one scan. This seems to be impossible in a single scan at this
> point since --top-ports seems to take precedence over everything specified
> with -p.
>
> # nmap -V
> Nmap version 5.35DC1 ( http://nmap.org )
>
>
> Thanks,
>
> Marcus
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