looking for port scanner to scan outside IP addresses for open ports

Dan
Dan used Ask the Experts™
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Hi, I'm looking for a port scanner to scan outside IP addresses for open ports.  I need to go PCI (something to do with taking credit cards) compliant on a few of my sites and this seems to be the first step.

I have found some online that scan a single or small range, but I was looking for a local program that could scan a full range.

It dosen't need to be free, but hopefully not break the bank like GFI.

Thanks all.
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Look into Qualys to meet your PCI compliance needs.

Author

Commented:
do they have a downloadable program, or just through their browser?
It's an actual physical appliance on the network which is accessible through a browser.
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Sr Software Engineer
Commented:
NetTools is a pretty nice suite of tools.  It has nmap in it which you can feed the IP range(s) you want to scan and scan all possible ports.  see if that works for you.
Dave HoweSoftware and Hardware Engineer

Commented:
really, the only requirement is to have an external account - so, any home ADSL will do - and run nmap, or something larger (such as openvas/nessus) that includes nmap.

nmap 6 just came out too, with full ipv6 support :)
I would do this to see if my ports are open.

1.
Scans some of the ports used similar.
www.mxtoolbox.com 

Just type

Scan:***.***.***.*** Then it will scan ports from the outside.

2.
Telnet on the port.
like
Telnet ***.***.***.*** 25

If it could help you to your answer.
Dave HoweSoftware and Hardware Engineer

Commented:
There are a wealth of free linux tools out there:

http://nmap.org/6/ - the catagory killer for port scanners

http://www.tenable.com/products/nessus - mostly-commerical vuln scanner, used to be completely free until they got sick of big-name scanning companies piggybacking on their work to sell commercial scanners with their libraries ebeddeed :(

http://www.openvas.org/ - attempt to produce a opensource replacement for nessus, partly successful.

Now, if you want a quick look, it might be worth taking these people up on their one-week trial deal:

http://www.tagadab.com/uk/virtual-servers

for £1 (less than $2) you get a week's use of a virtual linux box, which can run a gui and the above tools, and if you decide to keep it, its £10/month thereafter.

Author

Commented:
Thanks all, Net Tools did it, downloadable, scans ports and more.

It really does allot, but to do the port scan do the following.

Start – Net Tools Mini – scan tab – enter IP then 1-1028 (or whatever range)

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