Sending queries to servers on the Internet in order to obtain information about their services and level of security. On Internet hosts (TCP/IP hosts), there are standard port numbers for each type of ...

Nmap, short for Network Mapper, is a free and open source tool used for vulnerability checking, port scanning and, of course, network mapping. Despite being created back in 1997, Nmap remains the gold ...

A number of weeks ago, I provided and described a script that uses nmap to quickly scan a system or subnet for activity on a particular port. Useful for detecting, say, web servers or Oracle ...

I am interested in hearing some advice on what kind of solution I could put together to monitor for port scanning. Here is the kicker--it's someone on our network who is port scanning outside and I ...