Re: Portscanner with no installer?

[Vlatko Kosturjak <kost () linux hr>]

> I'd still like to find something similar for Linux, though. nmap is
> nice, but requires some libraries to be installed (maybe it's possible
> to do it all without root, I'm not really sure?) 

Little Perl golfing can help you in Unix/Linux case (actually any OS
which have Perl, even Windows - but not by default). Of course, if Perl 
is fine with you :) 

This is simple oneliner(?) to scan all ports on localhost using TCP connect
scan:
perl -MIO::Socket -e 'for($i=1;$i<65536;$i++) { if (my
$s=IO::Socket::INET- >new(PeerAddr=>$ARGV[0],PeerPort=>$ i,Proto
=>'tcp')) { print "$i "; close ($s); } } print "n";' localhost 

If you interested more, feel free to take a look at my Perl presentation
about few tips for pentesters:
http://www.slideshare.net/kost/perl-usage-in-security-and-penetration-testing

Hope it helps,
-- 
Vlatko Kosturjak - KoSt                                  ICQ: 3631122

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