Scanning

[R3fug33]

I have a question about scanning.
When ever I scan with nmap, I get results that all ports are filtered.
I scaned more than 100 IP adresses and didn't found 1 open port. Thees adresses wasn't from some security specialists, but from ordinary people usually running xp sp2 (most of them not updated) and windows 2003 server.

So this ports are filtered because thy are behind firewall.
But what to do now ???? How to bypass this ?
When ever I see this tutorials, thy all find open ports, but this is very hard to find.

So what to do now, you can't attack filtered ports with exploits, or do you ?

[SirDice]

How to bypass this ?

You don't.

[morganlefay]

You have permission to scan these machines...right

If you cant find the open ports...I would say the firewall is doing its job well.

Not sure why you want to bypass....or attack filtered ports???

MLF

[oofki]

You can use this command line:
--open: Only show open (or possibly open) ports

[R3fug33]

Bravo oofki, realy great help
I tried SYN scan and still nothing and than I tried TCP :

nmap -sT -p 21-25 --open b???.com -P0

Starting Nmap 4.21ALPHA4 ( http://insecure.org ) at 2007-06-25 18
ope Standard Time
Interesting ports on ?5.26.134.52:
Not shown: 2 filtered ports
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
25/tcp open smtp

Nmap finished: 1 IP address (1 host up) scanned in 12.547 seconds

This is beautiful. Thank you very much for helping me guys

[oofki]

Welcome dood.