1) Are there any good alternatives to nmap/zenmap in terms of port scanning ideally with a GUI as opposed command line
2) What could prevent a portscan working. For example we need to check 30 servers, before using zenmap this worked fine. Now when I run it (from XP) it just runs forever and never churns out any results. I have tried running it against
fully qualified domain name
And I have tried running it under the context of a normal domain user and a local admin same result both times. Any ideas what could be going wrong. The targets are virtual machines running server 2003. The server doesnt have firewall turned on.