Description from the Publisher
Pro Scan Features :
Does not require administrative privileges.
Detects hardware (MAC) addresses even across routers.
Detects your internal and external IP addresses.
Scans for listening TCP ports and SNMP services.
You can mount and explore network resources.
Support Telnet and FTP to connect the system.
Support HTTP to connect the system.
It is absolutely free, and does not contain any adware/spyware/malware.